Water boiler. Wood heating boilers with water circuit. Prices for boilers of the “Bourgeois-K Standard” line

Water circuit - climatic design of the required temperature regime.

Its essence lies in the fact that when the cooling system operates, the mechanisms take away heat, and those operating in heating mode release it.

According to technical design, it is represented by a solid fuel boiler. When using it the accumulated heat does not “fly out into the chimney”, as with conventional heating, and is stored inside heated rooms.

The absolute advantage of such designed heating systems is safety principle. During emergency shutdowns of traditional energy sources, it is possible to save heat thanks to an additional unit operating in autonomous mode.

Wood boiler with water circuit

The operating diagram of the device is quite simple. After lighting the wood the liquid is heated, which, in turn, enters the heating system. If the unit is installed in front of a gas boiler, it is possible not only to limit the use of this energy carrier, but also to completely replace it with solid fuel.

Photo 1. Diagram of a wood-burning heating boiler with a water circuit. The arrows indicate the parts of the device.

With correct thinking, understanding of physical processes, You can make a similar unit yourself. After all, the basis of all solid fuel systems made in a home-made way is the economical combustion of firewood, efficient heating of the heat exchanger and pipes.

Advantages homemade solid fuel installations:

cost price such a unit much cheaper than other heating systems;
correct connection, high-quality interaction with the heating system allows heat to spread over large areas than other devices;
significant heat transfer apparatus;
The energy resource is ordinary firewood, the acquisition of which will not cause any difficulties;
independence of the heating system allows you to exclude electric and gas energy carriers;
low physical and material costs for the entire project.

Flaws:

lack of autonomous heating mode, the system operates exclusively with manual control;
Efficiency similar unit somewhat exaggerated;
unpresentable appearance;
possibility of incorrect assembly systems.

Attention! Negligence in homemade production devices leads not only to ineffective operation, a tragic outcome is possible!

Wood-fired boiler design with water heating

An acceptable option for making it yourself is a solid fuel unit with contour heating.

The device includes two containers that fit one inside the other. The inner tank serves as a firebox, the outer one as a heating tank.

Homemade equipment can operate both on wood and other types of solid fuel.

Homemade boiler components:

metal firebox with door;
ash compartment with door;
soot collection;
chimney device;
steel pipe;
gate valve;
outlet and inlet fittings;
cast iron or steel lid;
support posts.

Operating efficiency of a solid fuel boiler with contour heating achieved due to constant circulation of coolant. Hot liquid moves up through the pipes, the freed space is filled with cold water, which heats up over time. Thanks to the continuous movement of liquid through the heating system, the required temperature is maintained in all rooms of the house.

DIY welding

The materials for making the device are quite affordable, and the tools required for the job are easy to find. From home handyman You will need certain skills as a welder and plumber.

You will need:

Metal container(ordinary barrel, no signs of corrosion). The housing of the unit must be made completely sealed. If there are flaws, they are brewed by filling them with water. The slightest leak is excluded.

Photo 2. Metal barrel, which is suitable for making a wood-burning boiler. Before work, you need to remove the paint from it.

Thick sheet metal for welding heat exchangers. There is a possibility of replacement homemade radiators for used cast iron batteries. Enough for the case 5-6 sections. Cast iron serves as a good heat conductor, maintaining the required temperature for a long time.
Profile pipes for chimney, installation of frame.
Doors, gate valves, grates. If the house is large, you will need a circular pump, since the coolant will not rise up through the pipes. There is a reality of defrosting the system during cold periods. Experts advise purchasing a thermometer and a pressure gauge for the mounted device.
To separate the pipes, you will need to install metal-plastic fittings And cast iron radiators, since solid fuel units with contour heating will not be able to function normally without this.

How to assemble a device using a homemade method

One of the main installation tools will be welding machine. If you have no work experience, further work is dangerous.

Boiler assembly algorithm:

Create (at least schematically) a drawing future assembly of the boiler and heating circuit.
Assemble the base that will support the unit. Apply profile pipes or metal corners. It is proposed to design the upper part of the apparatus in an arched shape, which will allow the barrel to take a more stable position.
Prepare the barrel. Make holes for the combustion chamber and ash, for the chimney, as well as the inlet and outlet openings.
The tank is installed at the back of the firebox. One of the features of wood-burning boilers is that the exhaust gases envelop the unit, helping to heat the heat exchanger. The installation of the device is done strictly vertically, the fittings are first brought to the holes made.
They install a metal chimney pipe and prepare the lid and door. The chimney is led out into a common ventilation hole. If there is no ventilation, the pipe is led to the roof.

When installing, carefully understand the right choice scheme: the presence of one pipe creates uneven heating, two pipes - makes it possible to regulate the temperature when installing Mayevsky taps at the ends of the radiators;
connect the fittings and batteries in series;
expansion tank place on the supply line.

After diagnostics, we inspect the structure, eliminate deficiencies, and start the heating process.

Possible difficulties during assembly

It is important to know that a homemade solid fuel device belongs to a risk zone and is included in the group of high-risk structures. Possible problems with incorrect assembly:

Incorrect chimney pipe diameter leads to poor traction and a decrease in temperature in the system.
Boiler doors are most often not airtight, due to which there is a possibility of smoke leaking into the combustion chamber, there is a danger of carbon monoxide poisoning.
Installation of the device without safety devices. This refers to the explosion valve for releasing air and the expansion tank.
Formation of condensation in the chimney pipe due to incorrect system assembly.
With a horizontal section of the chimney, it is important to install an inspection(special cover), which must be regularly cleaned of soot to protect the room from fire.

Causes of failures during system operation

During the operation of a homemade boiler, certain difficulties may arise. This is not necessarily due to errors made during installation work.

Installation of heating equipment is one of the top priorities for owners of private houses. Own homes often do not have access to a central heating system, and in some areas even to a gas main. That is why users prefer to install solid fuel boilers with a water circuit.

This device has autonomous power supply and is able to provide high-quality heating for the entire house. Any raw material available for a given area can be used as an energy source. If you live in an area with a timber processing industry, then the best option is to use sawdust and wood chips. One of the cheapest options is to use pellets, since they are a product of recycled raw materials. It is also possible to use the equipment on wood and coal. The main thing is that the fuel is properly dried and of the appropriate size.

Before purchasing a boiler, it is necessary to study in detail the features of its design, operating principle, as well as the advantages and disadvantages of the models.

Features of the unit

A boiler with a water circuit, operating on solid fuel, in its own way design features differ little from standard solid fuel installations. The main difference is the presence of a water circuit, which is included in the heating equipment.

The boiler consists of the following elements: water circuit, firebox, ash chamber and grate.

There are single-circuit and double-circuit versions of the product. The first ones are intended only to ensure work heating system Houses. The latter, in addition to heating, provide hot water supply for use.

Advice: Before choosing a specific unit model, you should calculate the required power of the device. This parameter will depend on the total area of the heated room. When using a dual-circuit design, take into account the required power for heating water. In general, take 1 kW for every 10 m 2.

Depending on the technical characteristics of the device, fuel can be supplied to the boiler automatically or manually with the help of a person. With automatic loading, it is assumed that there is a tank in which raw materials can be placed for autonomous heating of the house for a week.

Models with a tank are more expensive, so boilers with manual installation are more popular.

In addition, only crushed coal with a diameter of up to 2.5 cm is suitable for automatic feeding.

Operating principle of solid fuel boilers with a water circuit

Water is heated in the system circuit only during fuel combustion. The main raw materials for such models are coal or wood. When choosing a manual unit, one feed may be enough for 3 to 4 hours. If you want to ensure a longer combustion period for raw materials, then you should give preference to the pyrolysis model of equipment.

The cost-effectiveness of the installation depends on the quality of the device you use, how efficient the heat exchange process in the circuit is, as well as on control over the temperature conditions of the coolant.

The water circuit of the product has a special structure that allows the coolant to be heated with the best efficiency during the operation of a solid fuel boiler.

Received thermal energy accumulates from the walls of the water jacket, which ensures fairly rapid heating of the water in the system. In addition, this way you can maintain a high temperature level in the structure for a long period of time.

Regardless of the method of water circulation in the system (forced or natural), the boiler will heat a private house equally effectively.

Advantages and disadvantages of solid fuel units

Solid fuel boilers with a water circuit have many positive aspects during installation, these include:

high level of equipment reliability and safety;
long service life of the installation;
low cost of the heating system due to the availability of raw materials;
the possibility of using the boiler in areas where there is no connection to the main gas;
there is no need for frequent maintenance of the device.

In addition, waste from combustion products (ash) can be reused on the farm. A solid fuel boiler can always be converted to a unit operating on other coolants: gas, diesel, etc.

By purchasing a universal boiler model, you can use any type of solid fuel that is currently available.

The equipment also has several negative aspects, which include:

low level of efficiency of wood-burning models (the maximum value of this indicator can reach 80%);
in boilers with manual fuel supply, it is necessary to load it regularly (on average every 5-6 hours).

In conclusion, a video that describes the connection diagram of a boiler with a water circuit to a heating system with a gas boiler:

To correctly install a solid fuel boiler with a water circuit in a private home, you need to know the principle of its operation and design features. Before purchasing, you should study all the advantages and disadvantages, become familiar with the nuances of installation and operation.

For houses geographically remote from the gas main, solid fuel boilers with a water circuit will be a rational solution. Their main advantage is the ability to use inexpensive local raw materials as fuel material.

Design features

Boiler equipment of this type, in fact, is a slightly modified version of standard boilers - the design additionally includes a water circuit.

The design includes:

firebox;
grate;
ash chamber;
water circuit.

If single-circuit models are intended only for heating rooms, then double-circuit models are used both for heating the building and for supplying it hot water.

Advice. Before purchasing a dual-circuit model, you should calculate the power that will be spent not only on heating the room (about 1 kW per 10 sq. m.), but also on heating hot water.

Fuel loading can be done manually or automatically. The second option involves having a reservoir in the boiler into which fuel is added every 3-7 days. But models are more expensive than those with manual fuel supply, and therefore less common.

Diagram: operation of a wood boiler

In addition, only fuel that has undergone special preparation is suitable for supply - coal up to 2.5 cm or the so-called “eco-peas”. Some models are equipped with built-in electric heaters that start up when the fuel supply is cut off - thus ensuring their continuous operation.

Operating principle of models with water circuits

The process of heating water is carried out exclusively during the period of fuel combustion. The main fuel is coal or wood. In this case, one load is enough for 3–4 hours; a longer period of fuel combustion will be provided by a gas generator (pyrolysis) solid fuel boiler.

The higher the quality of the boiler, the efficiency of heat exchange processes in the water circuit and the more accurate the control of coolant temperature, the lower the cost of each kilowatt of heat produced. The special design of the water circuit allows the main coolant to be heated as efficiently as possible when the boiler is operating.

Furnace design of a solid fuel boiler

The wall in the water jacket is capable of accumulating the resulting thermal energy. Due to this, the heating device quickly heats the water and also maintains a high temperature for a long time. Boiler heating equipment with a water circuit works equally effectively both in a system with natural and forced circulation.

Advantages of solid fuel boilers with a water circuit

In addition to the relatively affordable cost of fuel and the equipment itself, the advantages also include:

high reliability;
long service life;
no need for frequent maintenance.

A solid fuel boiler is an environmentally friendly and cost-effective means of heating a home

Waste from fuel combustion, that is, ash can be used as fertilizer in private garden plot. Another plus is that a solid fuel boiler, if necessary, can be converted to work with other types of energy carriers, such as gas, diesel, etc.

Equipment disadvantages

In addition to undeniable advantages, boilers of this type are not without some disadvantages:

The efficiency of wood boilers at the highest fuel consumption varies from 70 to 80%;

Combining a boiler with a heating water system

A system of pipes and radiators connected to the water circuit allows the heat to be evenly distributed over the entire area of the building. The simplest type of heat exchanger can be a water reservoir, when a heat source is located directly below it. But such heating is ineffective, since the liquid will be heated only from below.

A solid fuel boiler allows you to create a uniform heating system for the entire house

The so-called “water jacket” will be much more effective in terms of transferring thermal energy. A more complex type of water circuit consists of double top and walls along the entire contour of the boiler, inside which the coolant circulates. Due to constant circulation, the water does not stagnate, and the thickness of 3-5 cm between the walls allows the liquid to warm up as quickly as possible.

Another equally effective type of water circuit is welded from thick steel pipes, bent in waves along the walls and top of the combustion chamber like a “coil”. The coolant moves slowly through pipes with a diameter of 5-6 cm, providing excellent heat transfer. In addition, this type of circuit has important advantage- improved maintainability.

Control and monitoring unit

The boilers are equipped with special systems to regulate the water temperature in the water circuit. The most simple system is based on the operation of a thermostat - when the required temperature is reached, the blower damper closes and thus reduces the air flow. As soon as the water cools down, the system will work in reverse.

Control units

More advanced control systems work with the inclusion of precise temperature sensors and forced electrified air supply. During installation forced ventilation There is an overhead air supply, due to which the fuel is burned almost completely. Boiler equipment of this type needs to be connected to the electrical network, but in the absence of electricity it is not able to work.

Equipping a circulation pump can save the system from completely defrosting. A boiler left unattended in winter, having used up all the fuel, will not be able to maintain the temperature level of the water in the system for a long time, as a result of which it will freeze over time. In this kind of critical situation, the control system will turn on the circulation pump, which will lead to the circulation of the coolant - in mild frosts, running water will not freeze.

Installation features

To heat a small home, it is advisable to install it directly in the house itself. Also, the boiler room can be equipped as a separate building or inside other outbuildings.

Construction of a solid fuel boiler

In this case heating pipe Always laid underground, always below the freezing level of the soil, thermal insulation is ensured. In the boiler room, the air temperature should be at 10 degrees, and special care should be taken to ensure high-quality ventilation equipment.

Advice. You can equip an insulated mini-boiler room in the basement or on the first floor of the house, and also allocate space there for a fuel supply.

The floor covering at the installation site must be non-flammable, level and hard. To increase the strength of the floor, the boiler is installed on a thin concrete screed. A sheet of metal with an area of at least 1 square meter must be laid in front of the heating unit. m.

Attention! The distance from the heating equipment to the walls of the room must be at least 50 cm.

During installation, you should strictly adhere to all recommendations given in the boiler equipment operating instructions regarding the main parameters of chimneys: cross-section and height. The joints between the chimney and the chimney must be filled with heat-resistant sealant or coated with a clay solution.

Installation of a solid fuel boiler

Conclusion

Solid fuel boilers are less popular than electric or gas ones, but for private homes without the possibility of gasification and with frequent power outages, they become the number one choice. You can connect to the system yourself, but it is important to comply with all fire safety requirements.

Which heating to choose for a private home: video

Solid fuel boiler: photo

What to do if a country house is not gasified, but electric heating not considered due to the high cost of electricity? If it is possible to regularly purchase or procure inexpensive solid fuel, then it is quite possible to organize an effective water heating and in such conditions. Nowadays, quite a lot of different heating devices are produced for this purpose, and among this diversity, long-burning pyrolysis boilers with a water circuit stand out.

These units are able to fully satisfy the heating needs of even a large house. At the same time, to maintain them you do not have to make any special efforts and spend a lot of fuel, which is used as wood in its various forms, coal or briquettes. Despite the fact that wood is the most ancient type of fuel, its use remains relevant to this day, due to its affordability, environmental friendliness, and ease of use.

The history of the appearance of pyrolysis-type heating devices

Even in the times of the Ancient World, it was noticed that using charcoal for heating a home or for cooking is more rational than ordinary firewood, since it does not burn intensely, but smolders slowly for a long time, effectively giving off heat. Therefore, the technology for its production was invented by burning wood in chambers with minimal air access. In fact, such dry distillation of wood into coal is a classic visual example of the pyrolysis process.

Previously, holes dug in the ground were used for this - the process of converting ordinary firewood into charcoal took place in them. These chambers did a great job, but making charcoal also produced a large amount of thermal energy, which was of no benefit. The gas released by wood during oxygen-free combustion has a powerful energy potential. By the way, this made the profession of a charcoal burner extremely dangerous, since gases sometimes escaping from the pits led to severe thermal explosions.

Over time, people have learned to make the most of the natural energy contained in wood. Furnaces were developed that successfully combined several processes - the pyrolysis conversion of wood into coal, followed by combustion of the latter, and afterburning of gases that are released during the primary thermal decomposition of fuel. Moreover, all the thermal energy obtained from these processes is used for human needs almost without losses.

At first, they tried to make conventional stoves using this design. Over time, heating devices using the principle of afterburning pyrolysis gases began to be equipped with a water circuit, due to which they began to be used in the water heating systems that are most familiar to us.

Thanks to their rational design and efficient use of the natural energy potential of wood, pyrolysis boilers fully cope with the task of a full-fledged high-power heating unit. Nowadays, not only firewood is used for their operation - more efficient and compact modern types of wood-based fuel have also been created.

Pyrolysis boiler design

General principles of the device

For a clearer understanding of how this type of solid fuel boiler works, you need to familiarize yourself with the information about it principle device. This will greatly facilitate the further operation of the equipment.

For example, consider the following diagram:

In the diagram, digital indicators indicate:

1 – Combustion chamber, where firewood is placed.

2 – Channels for supplying secondary air, which will initiate afterburning of the gases released during thermal decomposition of the fuel.

3 – Grate-grid, which is cooled by the coolant circulating in the water circuit, thus becoming part of the heat exchange system of the boiler.

4 – Door for the production of fuel filling of the boiler.

5 – Door of the combustion chamber cleaning chamber.

6 – Door for adjusting the supply of primary air required when igniting the fuel filler.

7 – Door for cleaning the upper afterburning chamber of pyrolysis gases.

8 – Ash pan, for collecting and regularly removing solid combustion products.

9 - Pipe for connection to the chimney system.

10 – Branch pipe with a coupling or flange connection for connection to the “return” pipe of the heating circuit.

11 – Connection pipe to the supply pipe of the heating circuit.

12 – Thermal insulation layer.

13 - External casing of the heating device.

14 – Along the arrow, as well as all areas shaded in blue – this is the water circuit (“jacket”) of the solid fuel boiler.

15 – Cooling circuit, which is often connected to provide hot water supply through an indirect heating boiler.

The operating principle is as follows. After adding fuel, access to primary air for ignition opens. At the first stage of work, the wood burns normally until the temperature in the combustion chamber reaches about 400 degrees, which is necessary to start the pyrolysis process. After this, the access of primary air is reduced to a minimum, and in parallel with this, the secondary air supply channel opens. The necessary combination of oxygen, condensation of pyrolysis gases and temperature for their complete combustion leads to active afterburning with a large release of heat. This heat is taken away by the coolant circulating through the water jacket, which transfers it to the heat exchange devices of the entire heating system of the house.

Green arrows show the movement of combustion gases from the fuel fill into the afterburner chamber and further into the chimney system. The blue arrow is the flow of coolant from the return line, the red arrow is the movement of hot coolant into the supply pipe of the heating circuit.

Design features of various pyrolysis boilers

So, long-burning pyrolysis devices, in contrast to the design of conventional solid fuel boilers, are equipped with two chambers, which can be located in different ways. The first combustion chamber is intended for loading solid fuel. In it, with a minimal dosed access of oxygen, the process of its combustion (smoldering) and the release of gaseous combustion products, that is, pyrolysis gases, occurs. Then, the gases enter the second chamber of the device, where, due to the supply of secondary air, they are burned. However, it should be noted that not all existing structures boilers, called pyrolysis, fully correspond to their name.

Today, there are two main types of pyrolysis units, differing in design.

Forced air boilers

In the first version of the boiler design, the primary combustion chamber, where solid fuel is placed, is located above the secondary combustion chamber, where afterburning of pyrolysis gases is organized. A special nozzle is installed between the chambers, having a straight cross-section and made of a refractory composition similar to fireclay bricks.

In this design, air is forced into the main firebox using an installed fan, and partly enters the firebox with solid fuel, and partly into the afterburning chamber of the released gases. In this case, it is obvious that the principle of pyrolysis is violated initially, since the fan creates an excess of oxygen instead of limiting it.

But, despite this, efficient and complete combustion of firewood occurs, with virtually no residue of even fine ash, since dry wood or products based on it burn to fine ash, and it is easily blown out through the nozzle by a fan into the chimney.

Knowing the features of this design, it can be called a “top blowing device”, since the air pumped by the fan enters mainly into the upper main combustion chamber. Due to the influx of oxygen, the temperature during combustion increases and gas production increases, but it burns quite quickly, escaping through the nozzle. In this regard, firewood quickly burns out, and it has to be added quite often in the process of heating the house. This principle of boiler operation cannot be called pyrolysis in the full sense of the word, although similar devices are sold quite often under this name.

It’s another matter if a fan standing on the outlet pipe (often called a “smoke exhauster”) creates air movement that would normally mechanically or using automation it is proportionally divided into primary and main - secondary. In this case, the primary air damper is located so that it is supplied precisely to the lower part of the fuel filler. The smoldering of firewood occurs from below, and the temperature released during this process promotes heating - in the middle layers of the stack, and final drying - in the upper ones.

The main air flow will be supplied only to the nozzle area, so that the final combustion of the pyrolysis gases with the maximum amount of heat generated takes place in the lower chamber. Such a boiler can rightfully be classified as a long-burning pyrolysis boiler.

Boiler with natural air supply

In such a boiler design, the combustion chamber for storing firewood is located in the lower part of the device, and the combustion section of the pyrolysis gases released by the fuel is in the upper area of the body.

A fan is not installed in this design, and the air for lighting the boiler and afterburning pyrolysis gases is supplied naturally through dampers for primary and secondary air. In this version of the arrangement of the chambers and the dosed supply of air flows, the pyrolysis process is carried out properly, since instead of intense combustion, with the primary air supply damper closed, wood smoldering occurs in the combustion chamber with the release of a large amount of pyrolysis gases.

1 – fuel filler.

2 – fuel smoldering zone with the release of pyrolysis gases.

3 – primary air supply damper to ensure ignition and smoldering of the fuel fill.

4 – channel for supplying secondary air to form a gas-air mixture and ignite it.

5 – nozzles for supplying secondary air to the rear area of the combustion chamber.

6 – zone of mixing of released pyrolysis gases with the air flow and their ignition.

7 – damper of the channel for additional air supply into the afterburning chamber of pyrolysis gases.

8 – chamber for intensive afterburning of the gas-air mixture with maximum heat release.

9 – pipe connecting the boiler to the chimney system.

However, this design also has its own problem. And it lies in the fact that the correct debugging of the combustion process is extremely important. When the main chamber damper is completely closed, the temperature in it decreases, as well as the formation of gases. The concentration and temperature of the gases becomes insufficient for their complete afterburning and the upper chamber turns into a regular gas outlet. The combustion products that rise into it do not burn out, but simply give off heat to the walls of the water circuit and go into the chimney. The efficiency of the boiler during such operation is sharply reduced.

If the damper is opened more than required to create the conditions necessary for pyrolysis, then the intensity of combustion in the main firebox will increase, which leads to completely irrational fuel consumption and the need for frequent refills.

To achieve ideal operation of a pyrolysis boiler of this design, it is necessary to correctly adjust the supply of primary and secondary air, which is quite difficult to do, since this requires practical experience. Modern models have automated monitoring and control systems for processes, and with correct operation of automatic fuel loading, it is enough for 12–14 hours of operation at maximum heat transfer.

Fuel for pyrolysis boilers

Many pyrolysis boilers are capable of working not only with wood. Peat or chip briquettes, sawdust, pellets, black or brown coal can be used as solid fuel.

Each type of fuel has a different burning time, and depending on how often it is planned to add it to the firebox to fully heat the house, one or another material is selected. In addition, the duration of combustion also depends on the amount of fuel placed in the chamber. Thus, the smoldering time of soft wood is about 7 hours, hard wood and compressed sawdust or peat is 9-10 hours, brown coal is 10-11 hours, and black coal is 12-14 hours. True, we must not forget that different types of fuel also differ in their energy potential.

Manufacturers of solid fuel pyrolysis boilers still call dry wood with a moisture content of no more than 20%, the logs of which are 450÷650 mm long, depending on the depth of the combustion chamber, as the optimal fuel option. It is natural firewood, especially dense hardwood, that provides the proper power of the device and maximum durability of the equipment.

It is not recommended to use wet firewood because during the combustion process they release a large amount of evaporating moisture, which leads to the formation of soot and tar deposits in the boiler chambers and chimney pipe. Such phenomena sharply reduce the efficiency of heat exchange with water circulating along the circuit, and if there are significant build-ups on the walls of the chimney, the boiler will constantly extinguish due to insufficiently intense draft.

You might be interested in information about how it works

Prices for black coal for heating

black coal for heating

Criteria for choosing a long-burning pyrolysis boiler

When deciding to purchase this type of heating device for heating your home, you need to pay attention to some factors on which the efficiency of the boiler will depend:

The first thing you need to pay attention to is the type of solid fuel allowed for use. Of course, this factor will depend on the availability of a particular type of fuel in local conditions and the profitability of its use.
Heating boiler power. This parameter depends on a number of initial data, ranging from the climatic conditions of the region of residence to the characteristics of the building. In the appendix to this article, the reader will find a convenient algorithm for independently calculating the minimum required power for heating his home.
The efficiency of a boiler is assessed by its efficiency. The higher the efficiency, the greater the heat transfer will be obtained with equal consumption of the same fuel.
The most important parameters in this case are the dimensions and weight of the boiler. As a rule, such products are quite bulky, that is, it is necessary to evaluate in advance the location of their planned installation and correlate it with the dimensions of the proposed models. It would also be useful to evaluate the path along which the stabbing will be brought into the room. And the considerable weight (this applies especially to cast iron models) sometimes forces us to take steps to strengthen the base of the floor for installation of the unit.

In addition, quite often solid fuel boilers are used in conjunction with indirect heating boilers, and maximum efficiency and convenience can be achieved by installing a buffer tank (heat accumulator). Both of these devices are also very bulky and heavy, so the layout of the boiler room should be thought out in advance.

What does installing a buffer tank for a solid fuel boiler give?

The operation of any solid fuel boiler is characterized by cyclicity - alternating periods of loading, ignition, maximum heat transfer and cooling. All this is not entirely convenient for the operation of a water heating system. Installation allows you to eliminate this drawback as much as possible and increase the convenience and efficiency of operation, which is described in detail in a separate publication on our portal.

Frequency of loading and ease of boiler maintenance. It is recommended to give preference to models with a large fuel chamber and a tray for collecting solid combustion products. In these cases, fuel can be added once or twice a day, and when using dry firewood as fuel, the pan can be cleaned once every two to three months.
Material for making the heating device. Cast iron is considered the most durable material for this equipment. The service life, subject to all rules, is at least 30 years. At the same time, if you plan to use coal as a fuel, then cast iron is undesirable (this alloy does not like excessive thermal loads), and it is better to purchase a boiler made of alloy steel.

By the way, the durability of a high-quality device is often limited not by its failure, but simply by “obsolescence”, when the owners come to the conclusion that it is time to purchase something more modern.

Degree of automation. Of course, the more the boiler is saturated with automation that controls the formation of pyrolysis gases and their complete afterburning, the higher the efficiency and economy of heating, the easier the daily operation.

But solid fuel boilers themselves are quite expensive products, and the higher the degree of automation, the higher the cost of the model. So, probably, it is necessary to be able to choose some kind of “golden mean”. In addition, we must not forget about the dependence of automated boilers on the availability and stability of the power supply. If there are frequent problems with this in your area of residence, then quite serious expenses for purchasing a backup source and (or) stabilizer are inevitable.

Finally, it is necessary to evaluate the model from the point of view of ensuring the safety of its operation. It would be completely unacceptable, for example, if insufficient thermal insulation of the external casing of the boiler leads to a high probability of getting a burn if accidentally touched.

The main advantages and disadvantages of solid fuel pyrolysis boilers

In addition to the criteria for choosing such a device for heating a house, you need to know the main “pros” and “cons” of pyrolysis boilers.

To their merits can be attributed:

In the absence of gas supply, this type of heat generator is the best option for heating a house due to its simplicity and cost-effectiveness in operation.
Wood itself is an environmentally friendly fuel that does not pose a danger during transportation and storage. With high-quality afterburning, the release of environmentally harmful substances into the atmosphere is minimized.
Such boilers, unlike other solid fuel boilers, do not require frequent loading. As mentioned above, this process is carried out once or twice a day, depending on the specific model, additional boiler room equipment, outside temperature and the need for heating intensity.
Such boilers are characterized by rapid heating of the coolant, and therefore the premises of the entire house.
Cleaning from solid combustion products will also not be a big inconvenience: their quantity is minimal.

Disadvantages boilers of this type can be considered the following:

High price for devices. It exceeds the cost of conventional solid fuel boilers by 1.5÷2 times.
Pyrolysis boiler models can have only one circuit - the heating circuit. Therefore, if you plan to simultaneously equip your house with a hot water supply system, you will have to choose another version of the device or install an indirect heating boiler in combination with a pyrolysis boiler. Some models have pipes specially designed for these purposes.
High demand for fuel. Pyrolysis boilers do not work well on damp wood.
Units of this type cannot operate fully automatically, so you will have to load fuel manually and monitor its amount in the fuel chamber. There are exceptions - pellet boilers with automated feeding, but it is better to classify them as a different category of equipment.
Boilers of this type are not compact.

Review of models of solid fuel pyrolysis boilers

In specialized retail outlets, as well as in online stores, you can find a considerable number of models of various heating devices, including pyrolysis boilers with a water circuit. They are represented by domestic and foreign manufacturers and have a fairly wide range of prices and characteristics.

Domestic pyrolysis boilers

Among the most popular solid fuel units for heating a private home by consumers are the products of such domestic manufacturers as the KZKO Geyser LLC company and TeploGarant of the Burzhuy-K series.

Boilers of the company KZKO "Geyser" LLC

The Geyser plant is one of Russia's leading manufacturers of heating devices of various types and designs. The offered assortment also includes solid fuel pyrolysis models “Geyser”. The equipment is manufactured according to innovative technologies from the highest quality materials.

Pyrolysis boilers are non-volatile, easy to maintain and reliable in operation, capable of heating large areas at minimum costs. In addition, heating devices have increased functionality and efficiency, since fuel consumption is significantly reduced due to its complete combustion and heat transfer to the coolant.

Pyrolysis solid fuel floor boilers with a water circuit “Geyser” of the VP series have the following technical characteristics:

Boiler power - 10,15,20,30,50, 65,100 kW.
The type of fuel used is peat and sawdust briquettes, coal and firewood.
Efficiency is about 85%.
Product warranty from the manufacturer is 2 years

The proposed range of pyrolysis single-circuit boilers of the Geyser VP series includes models with the following characteristics and approximate cost (as of autumn 2016):

Model name	power, kWt	Chimney diameter, mm		Device weight, kg	Approximate price level
"Geyser" VP-6	10	130	390×1050×700	170	46,500 rub.
"Geyser" VP-15	15	150	390×1200×700	210	60,000 rub.
"Geyser" VP-20	20	150	490×1200×850	240	70,000 rub.
"Geyser" VP-30	30	180	600×1350×930	340	89 000 rub.
"Geyser" VP-50	50	200	660×1600×1050	650	145,000 rub.
"Geyser" VP-65	65	250	660×1930×1050	750	155,000 rub.
"Geyser" VP-100	100	250	800×1930×1200	900	230,000 rub.

The Geyser boiler is an all-welded steel structure with several combustion chambers. The lower one is intended for storing fuel and gas formation, and in the upper one the gases are burned.

At low combustion intensity, that is, smoldering, the boiler has a higher thermal performance than stoves with conventional combustion. When operating these boilers, a minimum amount of harmful emissions and solid waste is generated. The recommended diameter of the logs used for burning is 40÷100 mm, and the length is selected in accordance with the depth of the combustion chamber.

Prices for boilers of the “Geyser” line

Sauna stove TMF Geyser

If coal is used to heat a building, it is recommended to choose a fraction of no more than 40 mm. Fuel is added to the firebox in portions, every 8-12 hours - this frequency will depend on the quality and type of fuel used.

The expected minimum service life established by the manufacturer is 10 years.

Pyrolysis solid fuel boilers from the TeploGarant plant, Burzhuy-K series

The TeploGarant plant is no less a well-known brand on the Russian market than the previous manufacturer, and its products have gained wide popularity among consumers.

It is interesting that TeploGarant is the only manufacturer on the world market that mass-produces heating devices with a power above 140 kW. The boilers of this company have their own name - “Burzhuy-K”, and are intended for wide use both in private homes and in the industrial sector. Let's consider several models of this brand.

"Bourgeois-K Exclusive"

A series of heating units with decorative external finishing, which the consumer can select and order individually.

Therefore, if it is necessary to install a boiler in one of the rooms of the house, without violating the overall design harmony, then with the “Bourgeois-K Exclusive” series this becomes quite possible. The heating pyrolysis devices of this manufacturer are also energy-independent, easy to operate, heat the house quickly enough, and also save money on the use of expensive fuel.

Long-burning pyrolysis floor-standing boilers of the “Bourgeois-K Exclusive” series have the following technical specifications:

The power of the devices is 12.24 and 32 kW.
The type of fuel used for heating is coal, firewood, sawdust and peat briquettes.
The efficiency of these models reaches 82÷92%.
Manufacturer's warranty – 2.5 years.

Pyrolysis single-circuit boilers of the “Bourgeois-K Exclusive” series are represented by the following series of models, with the characteristics shown below. But the price in this case can fluctuate significantly, since it depends on the chosen exterior finish.

This model of pyrolysis boilers is intended for use in residential and commercial premises. The water circuit can be with natural or forced circulation, that is, with a circulation pump installed in the circuit. The device is equipped with a draft regulator, which will provide automatic control over the combustion intensity, and this factor adds comfort to the operation of the boiler.

The boiler itself is a welded structure made of corrosion-resistant and heat-resistant steel, divided into several chambers. The combustion chamber is located in the lower part of the body, and the afterburning chamber is located in the upper part. For higher heat retention and transfer, the internal walls of the device have a fire-resistant lining. In addition, between the outer wall and the water circuit there is a layer thermal insulation material– in this case, basalt wool is used for this. External decorative cladding is made from natural stone.

The pyrolysis process in this boiler model is carried out in the same way as in other models of devices of this type. Thanks to afterburning, high-quality wall insulation and lining, the necessary thermal power boiler operation is ensured with sufficiently low fuel consumption.

The heating circuit can use conventional tap water with an acidity value not exceeding 7.2 pH, or special. However, when using the latter, the power of the heating boiler will be significantly reduced. However, this is typical for all types of boilers.

What is used as coolants in heating systems?

In terms of its heat capacity and absolute availability, water has no equal. However, there are situations when the use of water becomes impossible, and you have to resort to others. More details about this can be found in a separate publication on our portal.

The boiler kit comes with a capillary-type thermomanometer, designed to indicate the pressure of the coolant as it exits the boiler into the circuit, as well as its temperature.

Control of the set temperature of the coolant when leaving the boiler into the circuit is carried out by an automatic draft regulator. If the temperature drops, the adjustment door, under the influence of a special chain, will begin to open.

Removal of combustion product residues occurs in this design using natural draft. Bourgeois-K Exclusive boilers are energy-independent and easy to use, and if desired, this design can be supplemented with a thermal protection circuit and hot water supply.

The minimum service life established by the manufacturer is 10 years.

"Bourgeois-K Standard"

"Bourgeois-K Standard" has almost all of the characteristics listed above, with the exception of dimensional parameters and some differences in power gradation.

These models do not have exclusive external cladding. IN this option a coating of heat-resistant paint was used, applied to a metal body thermally insulated from the inside using spraying. In addition, adjustment in these models is done manually.

The parameters of boilers in this line are shown in the table below.

Model name	power, kWt	Chimney diameter, mm	Dimensions (width, height, depth), mm	Device weight, kg	Approximate price level
"Bourgeois-K Standard-10"	10	130	380×780×650	180	RUB 36,800
"Bourgeois-K Standard-20"	20	150	480×950×750	270	RUB 52,300
"Bourgeois-K Standard-30"	30	180	530×1120×840	380	66,000 rub.

The location of the chambers also does not differ from the models of the “Bourgeois-K Exclusive” line; the process of pyrolysis and afterburning of gases is carried out according to the same principle.

Prices for boilers of the “Bourgeois-K Standard” line

Burzhuy-K Standard

The efficiency of this range of models is 82÷89%, the possible power control range is 30÷110%. The operating time from one load of fuel is about 12 hours for firewood, and up to 15 hours when using high-quality coal.

"Bourgeois-K TA"

The Burzhuy-K TA pyrolysis heating unit differs from its “predecessor” in that air flow and draft are controlled automatically. The boiler is equipped with a water heating circuit, through which the coolant can circulate naturally, under the influence of temperature changes, or forcibly, using a circulation pump installed in the system.

This boiler model has all the positive features mentioned above and works on the same principle. The lower combustion chamber is also the main one, and afterburning is carried out in the upper area of the boiler body.

The table presents some characteristics and approximate price levels of Bourgeois-K TA boiler models of various capacities:

Model name	power, kWt	Chimney diameter, mm	Dimensions (width, height, depth), mm	Device weight, kg	average price
"Bourgeois-K T-50A"	50	200	690×1580×1210	580	145,000 rub.
"Bourgeois-K T-75A"	75	250	820×1670×1120	900	200 000 rub.
"Bourgeois-K T-100A"	100	250	780×1890×1420	900	RUB 225,000
"Bourgeois-K T-150A"	150	300	940×2000×1820	1350	330,000 rub.

The efficiency of these pyrolysis boilers is 82÷92%. They are energy-independent and economical in fuel consumption, easy to maintain, operate and manage. The devices are quite reliable, safe and durable, but for all models of this line of units it is already necessary to equip a separate boiler room.

"Bourgeois-K Modern"

"Bourgeois-K Modern" is produced in three versions of models, different in power. they all work on the pyrolysis principle. Can operate in systems with forced and natural coolant circulation

The location of the chambers in these models does not differ from the boiler designs presented above. For normal operation, it is recommended to use dry wood, but if necessary, the device can also operate on damper wood, with humidity reaching up to 50%.

The efficiency of Bourgeois-K Modern boilers is 82÷92% at economical consumption fuel.

The unit is similar in layout and level of equipment to devices from the “Bourgeois-K TA” line, but has a lower level of thermal power, is designed for a smaller building, and can easily be installed not in a dedicated boiler room, but in a separate room in a residential area.

The minimum service life of the heating device established by the manufacturer is also 10 years.

Main technical characteristics model range"Bourgeois-K Modern" are shown in the table:

Name of parameters	"Bourgeois-K Modern-12"	"Bourgeois-K Modern-24"	"Bourgeois-K Modern-32"
power, kWt	12	24	32
Chimney diameter, mm	130	150	180
Dimensions (width, height, depth), mm	500×1180×800	500×1180×800	600×1270×860
Device weight, kg	220	310	430
Heated area, m²	120	250	330
Required chimney draft, Pa	18	20	22
Max. coolant temperature	95	95	95
Combustion chamber volume, l	55	61	189
Heat exchanger material	steel	steel	steel
Contents of delivery	With draft thermostat and thermomanometer
Log length, mm	550	600	660
Duration of firewood burning, hour.	5-12	5-12	5-12
Average price level	63 000 rub.	75,000 rub.	94,000 rub.

Video: presentation of long-burning solid fuel boilers of the “Burzhuy-K” series

Boilers from foreign manufacturers

In addition to domestic solid fuel boilers for home heating, products from foreign, mainly European, manufacturers are on sale. The high quality of the models and the well-deserved authority of the companies makes it necessary to briefly review some of them.

Pyrolysis boilers from Buderus, Logano S171 W series

The German company Buderus specializes in the production of heating equipment and produces various types of boilers, including solid fuel ones, operating on the principle of afterburning pyrolysis gases.

The Buderus Logano S171 W model range includes four models of heating devices of varying power, designed specifically for installation in private homes. The peculiarity of these boilers is that they can work not only autonomously, but also in conjunction with units running on diesel fuel, gas or electricity.

Pyrolysis boiler “Buderus Logano S171 W 50”

However, it should be immediately noted that all devices of the Logano S171 W model range require a separate boiler room, carefully prepared in accordance with current rules, since for safety reasons they are prohibited from being installed in residential areas of the house.

The design of these models includes built-in control of an indirect heating boiler, provided in case there is a need to simultaneously install hot water supply in the house.

Heating devices "Buderus Logano" are equipped with modern automation, which allows you to effectively manage the entire heating system.

Prices for boilers of the Buderus Logano line

Pyrolysis Buderus Logano

The boiler body is covered with a special insulating material, which significantly reduces heat loss and also acts as a sound absorber, providing the unit with virtually silent operation.

In the design of Logano S171 W boilers, the main combustion chamber is located in the upper part of the body, and the afterburning chamber is in the lower part, the latter being insulated with fireclay lining. This arrangement of the chambers is convenient because pyrolysis begins to occur without igniting the entire fuel load.

Some characteristics and average price levels are in the table:

Model name	power, kWt	Chimney diameter, mm	Dimensions (width, height, depth), mm	Device weight, kg	Approximate price level
"Logano S171-22 W"	20	150	620×1136×1019	362	185,000 rub.
"Logano S171-30 W"	30	150	620×1136×1019	362	215,000 rub.
"Logano S171-40 W"	40	150	699×1257×1083	466	230,000 rub.
"Logano S171-50 W"	50	180	699×1257×1083	466	245,000 rub.

A few more design and operational features:

The efficiency of boilers in this line reaches 90%, which is an excellent indicator for any solid fuel units.
The thickness of the steel from which the device body is made ranges from 3 to 5 mm.
Large volume of the loading chamber, which means a long fuel burning time.
The boiler, in accordance with its design, is equipped with a fan for forced smoke removal.
The built-in heat exchanger will keep the device from overheating.
Automatic control of the unit of a modern type - a clear interface, LCD display, advanced options for connecting additional modules.
It is possible to connect DHW when installing an indirect heating boiler with coordinated control of the latter’s operation.
Complete thermal insulation of the device ensures maximum operating safety and minimal heat leakage.

You might be interested in information on how to choose

Pyrolysis boilers of the Viessmann company of the Vitoligno 100-S type VL1A series

Another well-known German company that represents its products on the Russian market is Viessmann. The series of boilers “Vitoligno 100-S type VL1A” also works on the principle of pyrolysis, and has all the advantages characteristic of high-quality devices of this class.

In addition to the use of firewood, briquettes or coal, this unit provides the ability to connect replaceable burners operating on gas or liquid fuel.

Heating pyrolysis boilers of the Vitoligno 100-S series have the following characteristics and price parameters:

Model name	power, kWt	Chimney diameter, mm	Dimensions (width, height, depth), mm	Device weight, kg	Approximate price level
"Vitoligno 100-S type VL1A, 25"	25	150	526×1063×1005	461	160,000 rub.
"Vitoligno 100-S type VL1A, 30"	30	150	586×1263×1005	551	215,000 rub.
"Vitoligno 100-S type VL1A, 40"	40	150	586×1363×1089	629	RUB 265,000
"Vitoligno 100-S type VL1A, 60"	60	200	655×1757×1134	822	340,000 rub.
"Vitoligno 100-S type VL1A, 80"	80	200	749×1757×1134	864	455,000 rub.

In addition, it is necessary to mention the features and equipment of the boiler that are not included in the table:

The depth of the main fuel chamber, located in the upper part of the boiler body, is 500 mm.
Since the fuel chamber is located in the upper part of the furnace body, the design is equipped with a forced fan “smoke exhauster”.
The thickness of the steel used to make the case is 5 mm.
The design is equipped with an electronic controller that identifies operating modes.
A protective heat exchanger is installed in the boiler to protect it from overheating.
The efficiency of this boiler is 87%
Easy adjustment of combustion intensity using primary and secondary air dampers - they can be adjusted manually.
The nozzle installed between the fuel chamber and the pyrolysis combustion chamber is made of fireproof fireclay.

You might be interested in information about what it is

Pyrolysis boilers of the Wattek company of the PYROTEK series

Another European manufacturer is the Czech company Wattek, which is well known in Russia for the quality of its products, and therefore quite popular among owners of one- or two-story private sector mansions.

Modern solid fuel boilers operating on the principle of afterburning pyrolysis gases are represented by the PYROTEK model line.

You may be interested in information about what they are

Table of the Wattek product range of the PYROTEK series with some technical characteristics and price levels:

Model name	power, kWt	Chimney diameter, mm	Dimensions (width, height, depth), mm	Device weight, kg	Approximate price level.
"PYROTEK-26"	26	152	530×1145×915	318	165,000 rub.
"PYROTEK-30"	30	152	530×1145×915	322	175,000 rub.
"PYROTEK-36"	36	152	530×1145×1115	372	195,000 rub.
"PYROTEK-42"	42	152	530×1145×1115	376	200 000 rub.

In addition, devices in this line are characterized by the following features:

The efficiency of boilers of this series is 90%.
The ability to maintain combustion from one load of fuel for 10÷12 hours.
It is possible to connect an indirect heating boiler with general control to the boiler for the installation of hot water supply.
PYROTEK heating devices are equipped with a copper heat exchanger protected from overheating.
Full automation of the boiler operation process, since it has modern panel controls, ensuring maximum simplicity and ease of use.
PYROTEK boilers are volatile, that is, they require connection to a stable power supply.
The body of the unit has high-quality thermal insulation made of basalt wool, located between the outer wall and the water circuit.

To conclude the topic of long-burning pyrolysis heating devices, it must be said that if the decision is made to install this boiler, then the purchase should be carefully thought out, since the prices for such equipment, as you can see, are very impressive. When choosing a specific model, you need to very carefully study its passport characteristics and check the product’s package contents.

You might be interested in information on how to equip

By the way, you can think about an individual order for the manufacture of such a boiler of the required power. In our area there are always many craftsmen who can make a boiler that in operation will be no worse than the factory model. To prove this thesis, watch the following video:

Video: long-burning pyrolysis boilers - individual production

APPLICATION

How to determine the required boiler power?

One of the key parameters when choosing any boiler equipment is its power. By the way, other characteristics of the boiler largely depend on it, including dimensions, weight, the possibility of installation in a residential area or the need for a mandatory separate boiler room. This means that it is necessary to find a value that would be guaranteed to provide efficient heating of all rooms of the house, but without unnecessary excess power, which entails an increase in size and a sharp increase in the cost of the model.

In addition, operation of the boiler at reduced power (and this happens during most of the heating season) sharply reduces the efficiency of the device and, therefore, the efficiency of fuel consumption. And the higher the difference between the optimal power value and its rated value, the more sensitive, and by several times, completely unnecessary losses will be.

When determining power, they are often guided by the ratio of 1 kW of thermal energy per 10 m² of room area. The approach, frankly speaking, is very approximate, since it does not take into account the multitude important factors, relating to both the specifics of the region and the characteristics of the building.

As an option, we offer our own calculation algorithm. It is based on the fact that for each room of the house an individual calculation of the required thermal power is carried out to maintain an optimal microclimate in it. Then all that remains is to sum up the obtained values and get the total value, which will become a guideline when choosing a boiler.

If it is necessary to make specially designed for this purpose can help.

Before you begin the calculation, familiarize yourself with the calculator interface below. For convenience, you can create a table in the rows of which you enter one by one all the rooms of your house where heat exchange devices will be installed, and in the columns - the necessary data characterizing this room.

Please note that the heat loss of each room is affected by its location relative to the cardinal points and the prevailing winter winds. If the user is not clear with these data, he can leave them as default, and the program will calculate the power for the most unfavorable conditions.

The minimum temperatures requested in the corresponding input field should not be extreme - you must indicate a level that is normal for the region of residence (for the coldest decade at home). But at the same time they do not remember some monstrous frosts, for example, five years ago, which were remembered only due to their obvious abnormality.

Further data entry fields will probably not raise any questions.

The resulting value already takes into account the operational reserve, and after summing up the total power, no corrections are required. When choosing, pay attention to models whose power is higher than the obtained value, but closest to it. This will be the optimal solution. you can find out by following the link.

Heating of a private home » Boilers and boiler equipment » Solid fuel boilers

Solid fuel heating boiler

Blue fuel is not yet available to everyone. It often happens that there is no gas supply outside the city, so the question arises of finding alternative heating sources. Electricity is an expensive type of fuel. The most accessible and in demand are the usual ones. wooden logs, therefore, heating equipment designed for this type of fuel is still relevant today. For heating country house The easiest way is to use long-burning wood-burning boilers with a water circuit.

When choosing one or another ready-made model, it is important to consider several serious points:

Firstly, you need to pay attention to the operating principle wood stoves having a water circuit.
Secondly, it is worth taking into account the presence of additional equipment that can be used to increase the productivity of the installation.
Thirdly, it would be useful to take into account what positive and negative characteristics long-burning boilers equipped with a water circuit have.

By answering all three questions, you can decide whether it is worth choosing a similar option, whether it will be reliable in harsh winter conditions, or whether you should give preference to equipment running on electricity or coal.

Features of fireboxes

Long-burning boilers according to their design features are divided into two: large groups:

Boilers with one firebox equipped with bottom blast.
Pyrolysis boilers, in which the combustion chamber has two parts and operates with two blast options - bottom and top.

How do conventional boilers with one firebox work?

Conventional wood-burning boilers are quite simple. They have a combustion chamber, a heat exchanger and a water circuit. The described device differs from a brick oven only in the presence of a coil with which the liquid is heated.

The equipment operates as follows:

Model Isberg K

As a rule, a long-burning wood-burning boiler is connected to the existing heating system.
Firewood is placed in a special chamber, which, when burned, releases heat.
The heat exchanger accumulates it and then heats the coolant passing through the coil.
Physical processes force the hot liquid to circulate, so the hot coolant enters the batteries, and cold water returns to the boiler.

Note! Today, long-burning boilers that have a water circuit and operate on wood can be equipped with a second circuit or an additional boiler can be connected to them. In this case, the efficiency of the system increases significantly, and it becomes possible to use hot water for technical needs.

What else can be added to the existing set?

The circulation of water in the system is ensured by physical laws. When heated, any substance expands and moves upward, and after it cools, the reverse process occurs. This is why natural circulation is possible. Ready-made models of wood-burning boilers are designed to heat a certain volume of water, and when choosing equipment, this criterion must be taken into account.

Model Thermo Vesta

Sometimes experts recommend installing circulation pumps to increase the efficiency of the installation. Practice has shown that their use increases boiler productivity by approximately 2 times. But their installation makes long-burning wood-burning boilers energy-dependent. In order for such equipment to work during a power outage, it is advisable to immediately install a bypass together with the circulation pump. This is a switch that will allow you to switch forced circulation coolant to natural.

If it is necessary to provide both heating of the house and the supply of hot water to the kitchen and bathroom, experts recommend purchasing traditional long-burning wood-burning boilers, which already have a boiler for water heating equipment built into the body. This model will cost much more than the usual configuration, but it will allow you to immediately solve all the problems associated with creating a comfortable microclimate.

Another important point! When choosing heating equipment, pay attention to one that will allow you to heat water for domestic needs without supplying coolant to the radiators. This feature will make it possible to use the installation in the summer. Typically, such options include electric heating elements. Hybrid models are multifunctional. When the heating element is working, the long-burning installation is idle.

Pyrolysis boilers

Device diagram

If the house is heated using wood, you have to solve the acute problem of choice - to purchase a traditional or pyrolysis boiler with a water circuit. The second option differs from conventional installations in that in it solid fuel and combustion products are burned separately. Any pyrolysis boiler has a firebox consisting of two sections. Firewood is loaded into the first one. In winter, they are usually damp, so when burning, water vapor is produced. To prevent it from interfering with combustion, a second chamber is used. Hot gases move into it, and there they eliminate excess moisture under the influence of a jet of secondary air. This is the so-called double blowing method.

The two chambers are separated only by a grate on which firewood lies. The primary airflow passes through them from bottom to top. Therefore, the main difference that a pyrolysis boiler has from a traditional installation is the presence of two types of blast. The operation of this design is ensured by forced draft generated using a smoke exhauster.

This installation works quite simply:

Type of pyrolysis boiler

Firewood is laid out on the grate.
After they are ignited, the door must be closed, after which the smoke exhauster starts working.
A high temperature is formed inside the firebox, leading to the formation of wood and carbon monoxide, as well as volatile elements such as hydrogen and nitrogen.
All these substances enter the second firebox.
There they are mixed with secondary air, in which all the gases burn. The heat generated in this case again descends into the first firebox.

Thus, a high temperature is constantly maintained, ensuring the pyrolysis process. It creates heat that can be used to heat any coolant.

Advantages and disadvantages of pyrolysis boilers

When deciding between two options, it is important to consider the advantages and disadvantages of each type of boiler.

We list the main ones:

Model Geyser T-20

The double air supply, which is characteristic of a pyrolysis boiler, allows you to increase the burning time of one load of firewood to 12 hours. A load of firewood in traditional long-burning boilers burns out within 3–4 hours. Therefore, more firewood is consumed, and the stove has to be loaded more often.
The pyrolysis process ensures complete combustion of the fuel. As a result, less ash is produced. Therefore, it is easier to care for the stove, since you have to remove ash and clean the gas ducts less often.
In pyrolysis boilers, two-stage combustion reduces excess air in the furnaces, which increases the efficiency of the furnace and its economics.
The presence of two fireboxes allows you to control and, if necessary, regulate the combustion process. Thanks to this circumstance, such installations can be automated, like the operation of gas heating equipment. It is impossible to do this using a traditional wood-burning boiler.
Large logs can be placed in pyrolysis boilers. This eliminates the need to spend a lot of time and effort chopping firewood.

So we can safely say that long-burning pyrolysis boilers, equipped with a water circuit and powered by wood, are more economical than similar traditional installations.

Existing disadvantages

In fairness, it is necessary to mention the disadvantages of the described equipment:

Principle of operation

Pyrolysis boilers with a water circuit are 2 times more expensive than traditional analogues.
They cannot work without a smoke exhauster, so this option is energy dependent. During a power outage, the heating equipment will not work. And this must be taken into account where such problems occur very often.
When buying pyrolysis boilers, carefully study reviews about the manufacturer. It has been noticed that some installations demonstrate a discrepancy with the declared power. During operation during laying, in 40% of cases the pyrolysis process is ineffective.
When using the described installations at half power, tar is formed, which clogs the flues.
For the full functioning of a wood-fired pyrolysis boiler with a water circuit, it is necessary to mix hot water with the water that goes back to the boiler. If the return temperature is less than 60 degrees, condensation will form in the gas path, which will cause the development of low-temperature corrosion.

Conclusion

Boiler room in the house

To operate traditional and pyrolysis boilers, firewood is used - the cheapest type of fuel today. Such equipment remains relevant where the supply of blue fuel is not established. Compared to other types of heating equipment, long-burning boilers can be equipped with a water circuit, which will ensure efficient heating of any room.

The coolant heats up very quickly, and servicing the boilers is not that difficult. To install them, you do not need to collect various permits and certificates. The only condition for installation is the presence of ventilation and a working chimney.

Pyrolysis boilers are more efficient than traditional installations, but their advantages should not be exaggerated. They also have many disadvantages. Therefore, when making the final choice, you need to weigh everything and decide what is fundamentally important for the operation of the heating system in a particular case.

Comments and reviews on the material

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Long-burning solid fuel boilers with a water circuit for home use

With the rise in gas prices, a significant part of private home owners are taking a closer look at solid fuel boilers. And in some areas it simply does not exist, and then there are not many options left for heating your home.

For many, this type of heating is associated with old wood stoves that require constant supervision and maintenance. At the same time, the Internet is swelling with offers to purchase modern solid fuel long-burning boilers, which, according to their manufacturers, can operate without intervention from a week to a month with one load of fuel. Is it so? Let's try to figure it out.

Long-burning boilers with a water circuit using wood

Before purchasing such a unit, consider your options for providing it with the appropriate fuel. Different brands of solid fuel boilers work with different types of fuel and are often very demanding on quality. Some models can work with several types of fuel, but such versatility will either greatly affect the duration of its combustion from load to load, or complicate the maintenance process, or radically affect the efficiency of the boiler. But rather, for all the mentioned characteristics at once.

Hence the reviews from their owners: from moderately positive to extremely negative.

The greatest demand in Russia is for long-burning boilers with a water circuit loaded with ordinary firewood.

This is due to several factors:

such boilers are often built into existing systems water heating circuits for houses instead of or simultaneously with gas ones;
convection water heating systems for houses are more familiar and familiar to Russian consumers;
the presence of large reserves of wood in the Russian Federation and, accordingly, the relatively low cost of firewood, or even access to a free resource: wood processing waste, wooden containers, etc.;
simpler ways to store and maintain fuel reserves than coal or fuel briquettes.

Let’s immediately say that the best models of such units are capable of working on one load of firewood in ideal conditions from 10 to 12 hours to a day, depending on the capacity of the firebox, and consume from 40 to 80 kg of firewood. It is this parameter that ensures the duration of their combustion. But not only them. There are a number of technical solutions that make it possible to increase the operating time of such a solid fuel boiler up to 3 times in comparison with a traditional one. Namely:

1. Wood combustion does not occur immediately over the entire height of the stack, but in a given area (only from above or below). This is ensured by sealing the boiler and dosed oxygen supply to the required area.

It is pumped using a snail with a self-regulating valve.

It is controlled by an automation unit.

Without such a boost, the boiler operates in smoldering fuel mode, which increases the time it takes to completely burn out. True, its prolonged stay in this mode leads to accelerated soot formation, which necessitates more frequent cleaning both the boiler itself and the chimney. When the temperature drops below the set value, the blower fan is activated and the combustion intensifies.

2. In the process of burning wood, the following are formed: charcoal and flue gases. On the principle of afterburning their mixture with oxygen, the so-called. pyrolysis boilers.

In them, flue gas from the wood burning zone is diverted into the firebox, along the way mixing with injected oxygen, where it is burned, which:

significantly increases the efficiency of the boiler (up to 90 – 95%);
reduces soot formation;
minimizes ash waste;
saves the owner money.

The latter is especially important, taking into account the high cost of all pyrolysis solid fuel boilers.

Often the fireboxes of pyrolysis boilers are lined with fireclay bricks due to the high afterburning temperature (about 1200°C).

3. Combustion products discharged into the chimney pass through the boiler's smoke circulation system, connected to the water heating circuit of the house, in which the coolant circulates (often it is water).

Sometimes the heat exchanger is a water tank with a large number of pipes welded into it, through which gases are removed, giving off their heat to the water.

When choosing a long-burning wood-burning boiler, it is important to consider two points:

Firstly, the manufacturers offer an approximate calculation of the power of a solid fuel boiler, in which for every 10 sq.m. The area of the house should be allocated 1 kW, it is advisable to double it, otherwise there can be no talk of any long burning - the boiler will work at the maximum of its capabilities and consume fuel in constant pressurization mode.

Secondly, such boilers operate with a connection to the electrical network, which ensures the operation of the control unit, volute fan and circulation pump in the heating system (at a minimum). Therefore, for their correct operation, it is best to install a block uninterruptible power supply, with a large capacity battery.

If you want to make such a boiler yourself, it is better to choose specific model and repeat its design solutions and features.

Long burning boiler up to 7 days

They are also called “weeks”. It should be said that, having impressive dimensions, they can really produce such indicators under ideal operating conditions, incl. small heated areas, and only with the use of high-quality coal, working mainly in smoldering mode. Among the Russian ones, the Kemerovo long-burning boiler is close to such characteristics.

Also long-lasting boilers are pellet boilers with large pellet hoppers and automatic feeding.

But the cost of the gigacalorie produced by the latter is significantly higher than that of other solid fuel boilers.

DIY solid fuel boiler

It has a funny name “bubafonia”, a simple design and a completely understandable operating principle. The Baltic boilers of serial production STROPUVA, which have gained well-deserved popularity among Russians, also operate on the same principle.

Let's consider the scheme of its operation.

In these boilers, air is supplied to the combustion zone through a pipe (7) and a piston (air distributor - 9). It is preheated by exhaust gases. Combustion occurs only in the upper part of the fuel deposit, which can be:

firewood;
sawdust;
various fuel briquettes;
pellets (fuel granules);
coal.

It is with the latter type of fuel that the maximum operating time of the boiler under standard conditions on one load is achieved: 3 - 4 days.

As the fuel burns, the piston lowers under its own weight, providing oxygen access to the combustion zone. To load the firebox, it is raised using a cable 12, secured with a hook 13. Loading is done to the level of the stowage door (8). The water jacket is located around the boiler body.

The design of this boiler is practically repeated by some other manufacturers, you can do it too, and this video will help:

But there are simpler designs that work on the same principle.

In the process of lowering the piston, which serves as a device for supplying air to the combustion zone, as in the above-described boiler, combustion gases burn out above it.

If the boiler is light and simply detachable from the chimney, then the process of removing a tiny handful of ash from its bottom is carried out by turning it over.

And if it is made of thick-walled gas cylinders or is installed permanently, then to remove it it is worth providing a hermetically sealed door at the bottom of the container.

Adjustment of the air supply, and therefore the intensity of the combustion process, is carried out by a rotary valve at the top of the supply pipe connected to the piston. Its design itself can be different, but always with a gap for free passage of air between it and the upper fuel level (for this purpose, radially located ribs are welded on).

You can burn almost anything in such a boiler, but sawdust, small firewood and coal are best suited - anything that fits compactly and without gaps. For those who do not want to experiment with dimensions, we offer a simple drawing of a long-burning solid fuel boiler.

If such a boiler heats a separate room and is located in it, an external circuit can be built around it. It will protect you from burns and will act as a convector.

If you want to equip a water heating system with bubafone, then this casing should be made closed and sealed, and the upper supply and lower return fittings for supplying the heating system pipes should be cut into it.

At the same time, do not forget to cut the expansion tank into it open type so that no trouble occurs during intense combustion and boiling water. Such a stove is capable of heating a house with an area of 70 - 80 sq.m. with a one-time daily load of sawdust (coal - once every 2-3 days), if your house is well insulated.

For constant use of sawdust as fuel, the boiler design can be simplified, and for small houses, the heating system shown in the video is, in our opinion, more preferable than with a water circuit, and certainly cheaper.

There is an even simpler version of bubafonia, and even one produced industrially.

It makes no sense to describe the process of making such a boiler with your own hands, due to the primitiveness of the design.

And finally, a short video on a homemade pyrolysis boiler for home craftsmen who have a high level of plumbing training and excellent welding skills:

Dear readers, if you still have questions, ask them using the form below. We will be glad to communicate with you;)

stroi-specialist.ru

Long-burning solid fuel boilers with a water circuit for the home

Long-burning solid fuel boilers with a water circuit for the home are heating units intended for use in non-gas-free cottages, houses and summer cottages. The low price of fuel, their use as a backup heat source and the ability to burn horticultural waste in boilers have made solid fuel boilers quite popular among country home owners. Such equipment is especially relevant in the context of the continuing trend of increasing gas prices.

A long-burning solid fuel double-circuit boiler will provide not only heating for the house, but also hot water supply

According to their design, a distinction is made between boilers with one combustion chamber using bottom blast and boilers with a two-part firebox with bottom and top blast (pyrolysis boilers). Types of body of a solid fuel heating boiler with a water circuit: cast iron or steel.

The design of a single-circuit boiler, which provides heating of the coolant for the radiators of the heating system, has the following design:

furnace - combustion chamber of solid fuels;
ash pit - a collection of waste generated during combustion;
chimney - a channel for removing exhaust gaseous combustion products;
jacket - a heat exchanger with water built into the firebox.

Types of fuel for solid fuel boilers

The principle of operation of the boiler is as follows: fuel is added to the combustion chamber, which releases heat during combustion. The heat exchanger accumulates heat and releases it to the coolant, which circulates through the coil. Warm water enters the batteries, and cooled water returns back to the boiler.

The difference between a double-circuit solid fuel boiler for a home is that it has an additional heat exchanger (coil) used for hot water supply. This heat exchanger is connected to the water pipes, providing domestic hot water.

The modern boiler room is equipped with a double-circuit solid fuel boiler with storage tank for hot water

There are two methods for connecting and positioning the DHW circuit:

Flow heating mode. With this method, the water heating circuit coil is built into the jacket. The water heating coil is heated by the energy of the heating system coolant. The water moving along the coil is heated to 45 degrees. The efficiency of such a system is up to 8 liters per minute.
Cumulative heating mode. Such a system provides a boiler (water heating tank) built into the chimney duct or the main heat exchanger. Heating is carried out by hot air or coolant from the heating system. Depending on the flow of hot water, cold water is supplied to the boiler from the water supply and heated there to 90 degrees. With this scheme, the DHW circuit is capable of providing a volume of water 2 times greater than the volume of the boiler, which will contribute to excessive fuel consumption.

Operating principle of a solid fuel pyrolysis boiler

When water is heated, due to expansion, its natural circulation occurs: when heated, it moves upward, and when cooled, it sinks down. Long-burning wood-burning boilers can only heat a certain amount of water. This parameter should be taken into account when choosing a boiler.

To increase the efficiency of the equipment, it is proposed to equip the boiler with a circulation pump. With its installation, the efficiency will double, but then the operation of the boilers becomes energy-dependent. If electricity is supplied intermittently, it is recommended to equip the boiler with a switch (bypass) that can convert the forced movement of water into natural one.

Heating and hot water supply based on a solid fuel boiler and solar panels will ensure energy independence for your home

Helpful advice! When purchasing a boiler, you should choose a model that will provide domestic hot water supply without supplying water to the heating system. This will allow you to use hot water in the summer season.

To ensure that the long-burning boiler does not work to heat radiators, but provides heating of water for domestic use, it is equipped with an electric heating element. Such a boiler is called hybrid and is multifunctional equipment.

Connection diagram for a boiler with a water circuit in common system heating

Equipping boilers with additional equipment (for example, a fan to provide draft in the chimney, a pump to pump hot water into the pipes) makes the equipment energy-dependent, on the other hand, connecting to the network makes it possible to automatically control the process.

We invite you to watch the video: “Do-it-yourself solid fuel long-burning boiler”:

Construction of a pyrolysis solid fuel boiler with a water circuit

A feature of the functioning of pyrolysis boilers is that their combustion chamber consists of two separate sections. Solid fuel burns in one section of the furnace, and combustion products in the other. When firewood (often damp) is placed in the first compartment during the cold season, steam appears when it burns. To eliminate its negative impact on the combustion process, a second section of the firebox is used. It is into it that hot gas moves, which removes excess moisture using a secondary air stream. This method is called the double blowing method. The two sections of the chamber are separated by a grate, where the firewood lies, through which the primary air flow passes. The functioning of the pyrolysis boiler is facilitated by the forced draft created by the smoke exhauster.

Design of a pyrolysis boiler with a water circuit

Operating order of the pyrolysis unit:

Solid fuel (firewood) is placed on the grate;
the boiler is ignited, the firebox door is closed and the smoke exhauster is turned on;
during the combustion process, a high temperature is created inside the chamber, which contributes to the formation of charcoal, carbon monoxide and volatile formations of hydrogen and nitrogen;
all these products enter the second section of the chamber, where a secondary air flow is mixed with them and these products burn;
the heat from the combustion of these products is re-supplied to the first section of the chamber.

As a result of this design of the boiler, a sufficiently high temperature is maintained in it; waste from the combustion of wood is decomposed thermally, forming pyrolysis gas. Thus, solid fuel is used rationally, and the heat from waste combustion is reused.

Pyrolysis solid fuel boiler with automatic fuel loading

To accurately select a solid fuel boiler for heating a private home, you need to analyze its characteristics:

In pyrolysis units, repeated air supply is used, which ensures the duration of burning of the fuel load, extending it to 10-12 hours, and the burning time of a similar load in a conventional boiler is 4 hours. From an economical point of view, pyrolysis boilers are loaded less frequently and less fuel is consumed;
In pyrolysis boilers, wood is burned with virtually no waste. There is a minimum of ash left. This, in turn, makes it easier to maintain the equipment: it is not so often necessary to remove ash from the boiler and clean the gas duct;

Pyrolysis boilers use repeated air supply, prolonging the burning time of the fuel load to 10-12 hours

two-stage combustion, which reduces excess air in the chamber, increases the productivity of the pyrolysis boiler;
with two combustion chambers, it becomes possible to control and regulate the combustion process. Pyrolysis boilers can be automated, which is completely impossible in conventional boilers;
pyrolysis boilers can accept quite a few logs for ignition large sizes, which, in turn, saves time on chopping wood;
easy and affordable installation - does not require permits, it is possible to install the equipment yourself.

A simplified diagram for connecting automation to a heating system with a long-burning solid fuel boiler

Solid fuel pyrolysis boilers for heating a private home have many advantages, but there are also some disadvantages that should be mentioned:

high price;
dependence on electricity - due to the use of a smoke exhauster;
in some cases, non-compliance with the declared power characteristics;

Helpful advice! Before purchasing a long-burning solid fuel boiler, read reviews about its manufacturer. Very often there are models with an ineffective pyrolysis process.

using boilers at partial capacity leads to the formation of tar, which clogs the flue;

To extend the service life, it is necessary to periodically clean the solid fuel boiler

For the correct operation of pyrolysis heating solid fuel boilers with a water circuit, it is necessary to add hot water to the liquid entering the boiler again;
the return temperature must be at least 60ºС, otherwise condensation will appear in the gas path, which will lead to corrosion.

What you should pay attention to when choosing a suitable solid fuel boiler model:

unit power. If you purchase a double-circuit boiler to provide hot water supply, you should choose a unit whose power is sufficient to heat domestic water;
hot water circuit performance. It is necessary to calculate whether the volume of water heated by the boiler is sufficient for the domestic needs of the whole family;

Diagram for connecting a heat accumulator to a heating system

Helpful advice! To provide hot water supply to a house where a large family lives, you should purchase a boiler model with a built-in boiler or install a heat accumulator.

convenience and frequency of maintenance. Pay attention to how often you have to load firewood and empty the ash pan. Give preference to models with a large hopper, where cleaning is done once every three months, and the burning duration reaches up to five days;
materials from which the boiler is made. Equipment made of cast iron is durable (service life is up to 30 years). The hot water coil must be made of steel or copper.

Modern models of long-burning solid fuel boilers can completely replace gas units in heating and hot water supply systems of a private home

Modern models of long-burning solid fuel boilers can completely replace gas. In addition, due to their high performance, they are environmentally friendly and economical. Purchasing a solid fuel boiler with a water circuit will be profitable if you take into account all the requirements and parameters of this equipment.

REMOO IN YOUR MAIL

remoo.ru

Long-burning wood boiler with a water circuit: application, features and principle of operation

Villagers living in remote areas where blue fuel is not available choose not a heating system powered by electricity, but wood-burning boilers. Residents of country houses and country houses do the same, guided by the principle of economy. For heating, the most affordable materials are used - wooden logs, coals, coke. Taking into account all economic costs, it will be cheaper than using gas cylinder. Birch and pine firewood is most often used for heating purposes.

There are 2 types of wood-burning boilers

Traditional

Boilers of a simple direct combustion design with one chamber - a container. The devices are easy to use and reliable, but they are not very convenient to use. It is necessary to use only dry firewood, which quickly burns out in 6–8 hours, which requires too frequent replenishment of fuel for the boiler. If the wood burns out incompletely, the chimney becomes clogged.

Gas generators

Boilers with unique pyrolysis technology, allowing solid fuel turn into a gaseous state and increase the burning time of the fuel. Models can be equipped with an additional camera. The combustion process goes on non-stop, fuel is added once a day. The cost of such boilers is slightly higher than classic ones, but due to the economical use of firewood, high power, and increased equipment efficiency, they quickly pay for themselves.

The organization of the operation of a wood-burning device for long-term combustion occurs by the method of pyrolysis. During the combustion process, the fuel sags, the fire zone moves smoothly from top to bottom, leaving virtually no ash. Firewood is burned in doses and ignites with renewed vigor thanks to an improved method of controlling fuel combustion.

The most common materials for making equipment are steel and cast iron.

Cast iron is slightly susceptible to corrosion, resistant to high temperature combustion, but are more expensive than steel ones. Thanks to the design, consisting of different sections, if they break down, it is possible to disassemble the equipment and replace the part requiring repair. The downside is its high sensitivity to temperature changes, but if you follow all the nuances, the boiler can operate for up to 35 years.

Steel often deforms and undergoes corrosive changes. If a cast iron boiler consists of sections, then a steel one is always an all-welded structure. The efficiency is much higher due to minimal technological limitations. The average service life of equipment is up to 25 years.

Let's look at the components of a wood-burning boiler:

Long-burning boilers are improved by equipping them with a water circuit (DHW), which allows the heat emanating from the stove to be distributed throughout the house, evenly heating several rooms at once. In addition, the house is provided with hot water, which is undoubtedly very convenient and economical.

The operating principle of a heat exchanger with a water circuit.

After installing and connecting the equipment to the local heating system, the boiler is filled with water, the liquid moves along the heating system circuit using convection, without requiring the use of a water pump. When wood burns, water heats up, circulating through the pipes and flowing to the radiators of the house. The cooled liquid, after releasing heat, returns to the boiler via the return line, warming up, and the process begins again. Such boilers are also called double-circuit: the first is used for water heating, and the second is used for hot water supply.

Most modern heat exchangers have just this method of organizing heating. There are certain points that are worth paying attention to: hot water is also needed in the summer, and the stove is unlikely to be heated, so you should consider additional equipment for heating the liquid. Today, it is possible to equip long-burning boilers with an additional circuit or boiler, which requires the presence of a container of water in the boiler, heated by convection, which will increase the efficiency of the system many times over.

When installing equipment with a water circuit, the necessary safety requirements must be observed:

Ground the boiler body.
Place the boiler on a fire-resistant material, preferably a metal sheet. It is advisable for them to cover the walls adjacent to the equipment and pre-finished with heat-resistant materials.
The foundation must be concrete or asbestos.
Wrap the part of the chimney that goes into the attic with foil to prevent a fire.
Equip the room with a good ventilation system.
Provide free access to the firebox door.
If you do not live in the house permanently, use antifreeze to prevent pipes from freezing during the cold season.

What are the advantages of wood-burning heating boilers with a water circuit?

For residents of private houses with no gas supply, such equipment is the only option for a heating system.
The heat exchanger’s high performance is noted; a large area is quickly and efficiently heated within an hour after the boiler is operating.
Affordability of equipment in comparison with other heating devices.
Ease of operation, which allows installation and adjustment work to be carried out without obtaining a special permit.
The availability of wood fuel for boilers in any locality and its low cost, which makes the equipment economical.
No connection to electricity due to the natural circulation of the device. The operation of the boiler on the water circuit is completely autonomous, which is extremely important in areas with interruptions and interference in the electrical network.

There are few disadvantages, but they do exist.

Lack of automatic fuel supply.
Low efficiency compared to powerful gas and diesel boilers.

Bimetallic heating radiators dimensions technical characteristics

Water boiler. Wood heating boilers with water circuit. Prices for boilers of the “Bourgeois-K Standard” line

Wood boiler with water circuit

Wood-fired boiler design with water heating

DIY welding

How to assemble a device using a homemade method

Possible difficulties during assembly

Causes of failures during system operation

Features of the unit

Operating principle of solid fuel boilers with a water circuit

Advantages and disadvantages of solid fuel units

Design features

Operating principle of models with water circuits

Advantages of solid fuel boilers with a water circuit

Equipment disadvantages

Combining a boiler with a heating water system

Control and monitoring unit

Installation features

Conclusion

Which heating to choose for a private home: video

Solid fuel boiler: photo

The history of the appearance of pyrolysis-type heating devices

Pyrolysis boiler design

General principles of the device

Design features of various pyrolysis boilers

Forced air boilers

Boiler with natural air supply

Fuel for pyrolysis boilers

Criteria for choosing a long-burning pyrolysis boiler

The main advantages and disadvantages of solid fuel pyrolysis boilers

Review of models of solid fuel pyrolysis boilers

Domestic pyrolysis boilers

Boilers of the company KZKO "Geyser" LLC

Prices for boilers of the “Geyser” line

Pyrolysis solid fuel boilers from the TeploGarant plant, Burzhuy-K series

"Bourgeois-K Exclusive"

"Bourgeois-K Standard"

Prices for boilers of the “Bourgeois-K Standard” line

"Bourgeois-K TA"

"Bourgeois-K Modern"

Video: presentation of long-burning solid fuel boilers of the “Burzhuy-K” series

Boilers from foreign manufacturers

Pyrolysis boilers from Buderus, Logano S171 W series

Prices for boilers of the Buderus Logano line

Pyrolysis boilers of the Viessmann company of the Vitoligno 100-S type VL1A series

Pyrolysis boilers of the Wattek company of the PYROTEK series

Video: long-burning pyrolysis boilers - individual production

APPLICATION

How to determine the required boiler power?

Features of fireboxes

How do conventional boilers with one firebox work?

What else can be added to the existing set?

Pyrolysis boilers

Advantages and disadvantages of pyrolysis boilers

Existing disadvantages

Conclusion

Long-burning solid fuel boilers with a water circuit for home use

Long-burning boilers with a water circuit using wood

Long burning boiler up to 7 days

DIY solid fuel boiler

Long-burning solid fuel boilers with a water circuit for the home

Construction of a pyrolysis solid fuel boiler with a water circuit

Long-burning wood boiler with a water circuit: application, features and principle of operation

There are 2 types of wood-burning boilers

Traditional

Gas generators

Regular and irregular English verbs

Where did the Romanov dynasty come from?