The advantages of a self-made long-burning stove that runs on sawdust. What you need to know about wood and sawdust boilers How to use sawdust to heat your home

Solid fuel boilers have long been seriously competing with traditional gas equipment. The efficiency of solid fuel devices, as well as their efficiency, has recently increased particularly rapidly. This is facilitated not only by the use of modern technologies, but also by the use of fuel, which was not even paid attention to before.

Sawdust boilers have become especially popular, although they are rare in our country. Therefore, few people have any idea about the principle of their functioning. Nevertheless, such boilers are truly worthy of yours, since they have many advantages - among them, environmental friendliness and the ability to save money. And if we add to this the fact that the cost of traditional types of fuel is growing every day, it turns out that soon these devices will become simply irreplaceable. Using a sawdust boiler, you can heat greenhouses and workshops, as well as private houses, completely.

Introductory video

How does this type of boiler work?

The main part of any heating device that runs on sawdust is the combustion chamber. This is where the heat exchanger is located, which heats up when sawdust is burned. When burning, the fuel is located on a special grate, due to which all residual waste falls into the ash pan - a special container that should be cleaned periodically. On average, cleaning the ash pit occurs about once every three months, but, of course, this period is relative, since much depends on the heating intensity.

Sawdust is essentially a waste product from the woodworking industry, and, as you know, it cannot produce a strong flame. For this reason, heated gases pass through the heat exchanger, further heating its surface. To enhance the effect, heat exchangers are predominantly made in a spiral shape, but there may also be several tubes that are connected to each other. The material from which the heat exchangers are made must be resistant to rust formation, as well as high temperatures; Moreover, it must conduct heat well. The heated gases, having transferred thermal energy to the exchanger, go into the chimney, being completely cooled.

In order to obtain high efficiency, sawdust boilers use not only the thermal energy that is generated during the combustion of wood, but also a by-product of this process - pyrolysis gas. But you must adhere to specific conditions in order to receive this gas. Thus, the amount of oxygen in the combustion chamber must be minimized, which is why the device is equipped with an artificial ventilation system - it will not only remove air from the firebox, but also bring it in if necessary. In order for the pyrolysis gas to also burn, the firebox must be divided into several separate parts:

In one of them the sawdust itself will burn.
The other contains gas transferred from the first chamber using a special burner.

Boilers operating on sawdust, as well as other heating equipment, can be of two types.

Single-circuit, capable of heating only.
Double-circuit, which both heat the room and supply hot water.

How fuel is supplied

In general, such boilers can operate on any wood fuel, from biological briquettes to ordinary firewood.

Note! In order to operate fully automatically, sawdust boilers must only use wood chips and sawdust!

In order for the device to be able to “feed” on wood, its combustion chamber must be redone. But most modern models already include everything needed for conversion.

Regardless of what type of fuel is used, pyrolysis boilers need it to be dry. If it is wet, steam will be generated during combustion. And if steam mixes with gas, the latter will become heavier, and the combustion process itself will deteriorate significantly. Therefore, it is not strange that every solid fuel device spends up to 1/3 of its power precisely on drying the fuel.

You should pay due attention to the fuel supply, which consists of two elements:

Note! Automatic boilers are characterized by the fact that they supply fuel continuously! This will allow you to make a bunker for it, located underground.

An underground bunker is good because it not only stores fuel, but it saves free space in the house. Often it is installed in such a way that its highest point is located at the same level as the foundation itself. In the same place there should be a hatch through which fuel will be poured immediately from the transport that delivered it. We also note that the bunker should be located in the room adjacent to the one where the boiler is located in order to easily set up a fuel conveyor.

Pros and cons of this material as a fuel

First, let's look at the advantages of this material as a fuel, because there are many more of them than disadvantages.

Any fuel made from wood is an environmentally friendly product that, even when burned, will not harm the environment.
Such fuel is inexpensive, because it is, in essence, ordinary waste.
Today sawdust boilers are fully automated, thanks to which all work processes are controlled.
Sawdust generates more heat than, for example, firewood, and can burn twice as long.
Sawdust can be used at any time, as it is always dry and ignites very easily.
During operation, virtually no soot is emitted.
The maintenance costs of such a boiler are significantly lower than those of its analogues.
Today, special pressed sawdust is even sold, sealed in convenient packaging.
The fuel is compact, which makes it very convenient to store.
Finally, sawdust does not release any toxins when burned.

And now about the shortcomings, which, as we promised, are not so many.

Sawdust is loose, which makes transporting it not very convenient.
The combustion parameters of this type of fuel are relatively low.

Features of choosing boilers operating on sawdust

In order to choose the right boiler that uses sawdust as fuel, it is necessary to pay special attention to a number of aspects. First of all, objectively assess the size of the house that will need to be heated. Based on the data obtained, you can determine what power device you need. To correctly calculate this power, use a simple, well-known formula.

For 10 square meters of room, 1 kilowatt of device power is required

It is important that when making these calculations you take into account the following parameters of your home.

Thermal insulation.
Number of windows and doors.
Ceiling height.

In addition, pay attention to whether the model you like is capable of automatically supplying fuel to the combustion furnace. If this procedure is automated, then further operation of the boiler will be easy and relaxed. As a result, you will spend less time monitoring all the operating processes of the device.

Finally, most modern sawdust boilers can be operated in combination with additional devices. This could be, for example, a household drying chamber. That is why, when purchasing a boiler, pay special attention to the additional options available in it.

As a conclusion

So we found out that sawdust boilers are an ideal option for a country house. Judge for yourself: the fuel for it is cheap, because it is ordinary waste from the woodworking industry, when the fuel burns, no substances harmful to health are released, and the operation of such boilers is a fairly simple procedure. In general, if you chose sawdust as fuel, then you made the right choice!

Using wood waste as fuel for the boiler will help reduce heating costs. But for effective work you need special equipment. A sawdust solid fuel boiler differs from its classic counterparts in design and maintenance.

Principle of operation

The main problem with this type of fuel is its high filling density. This prevents air from entering to support the combustion process. As a result, a boiler using pressed sawdust will not generate the required power, and some of the fuel will remain unburned.

To solve this problem, it is necessary to ensure the flow of air masses into the combustion chamber. This is done using artificially created depressions in the sawdust filling. An alternative is to install air supply pipes into the combustion zone.

General operating principle of heating equipment:

Fuel loading.
Ignition at the bottom.
Providing air supply using an open ash pan door, fan or ducts.
The gradual combustion of sawdust frees up space for a larger volume of air, circulation improves, and intense heat release occurs.

A long-burning sawdust boiler operates according to a different scheme. In the large combustion chamber there is no open flame, fuel smoldering. The formed wood gases are sent through the channel to the afterburning chamber, where an air mixture is added to form an intense fire.

Boiler design features

Unlike classic solid fuel equipment, a sawdust boiler has a large fuel (loading chamber) and ash pan. This is explained by the requirements for combustion duration - with an increase in the volume of the combustion chamber, the battery life on one tab becomes longer.

You can make a similar sawdust boiler with your own hands - the drawings and general description will help you decide on the optimal design. The advantage of the models is the ability to develop a unique assembly scheme based on the parameters of a specific heating system.

When manufacturing, you need to take into account the following nuances:

The combustion chamber. Should occupy up to 2/3 of the volume of the entire boiler. The walls are made of heat-resistant steel with a thickness of at least 2 mm.
The ash pan is located in the lower part and is separated from the combustion chamber by cast iron grates. The distance between them is minimal - up to 2 cm. There is also a fan or hole for air supply.
The heat exchanger must be located directly in the fuel combustion zone.
You can make a classic rectangular structure or weld it from pipes.
Chimney. To ensure traction, the diameter is at least 100 mm, the length is from 4 m and above.

You should think about the boiler maintenance procedure in advance - timely removal of ash, cleaning the walls from burning. Therefore, the loading doors into the fuel chamber are made in the upper part; they are large. Once closed, the seal must be ensured.

Boiler power calculation

One of the problems with homemade heating equipment is determining power. You can do the calculations for a sawdust boiler yourself. To do this, you need to know the basic characteristics of the fuel.

Calculation order.

Bulk density. On average, this parameter varies from 180 to 230 kg/m?. With a fuel chamber volume of 0.07 m? it will hold about 15 kg of crushed material.
Calorific value of fuel. The average value for 1 kg of fuel is 2.3 kW.
Power calculation. The maximum value for this example will be 15 * 2.3 = 34.5 kW.

This simplified method does not take into account fuel moisture and air supply intensity. It is recommended to subtract 10-15% from the obtained value. The actual maximum power will be 29 kW.

Automation method and operating rules

To automatically load sawdust, you can install a screw feed. The shaft is attached to a hole in the combustion chamber, at the bottom. There is a separate storage bin for chopped wood pulp. A temperature sensor is mounted in the automatic sawdust boiler, in the heat exchanger.

It connects to the control electronic relay. When the minimum temperature is reached, the auger motor turns on and fuel is supplied. Recommended operating time is up to 1 m.

To maintain equipment in working condition, you must follow these rules:

clean the ash pan from combustion products once a day;
check draft, remove soot from the inner surface of the pipe;
To prevent condensation from entering the combustion zone, install a water container at the bottom of the chimney.

The sawdust must be dried before loading. Otherwise, their calorific value will decrease, which will affect heat transfer. To avoid heat loss, it is recommended to insulate the outer walls with basalt wool; the combustion chamber doors must be sealed and double.

Recently, boilers running on sawdust or wood chips are often used as a heat source in water heating systems. And this is quite justified, given the considerable number of its advantages compared to other types of similar equipment, including environmental friendliness and certain savings when using such not very traditional fuel.

Moreover, prices for conventional energy sources are becoming higher and higher, and a sawdust boiler and its characteristics are such that it can be used to easily maintain heat in a residential building, in a greenhouse, and even in industrial premises of a large area.

Pros and cons of the technique

The main advantages of using burning sawdust and wood chips as an energy source for the heating system are:

High efficiency of heating the coolant (usually water, although antifreeze can also be used in a water system), with the help of which the house is kept warm, and sometimes also provides hot water supply.
Low cost of raw materials. A system based on the use of a sawdust boiler will be especially advantageous if there are one or more woodworking enterprises (for example, furniture factories or sawmills) near the heated premises.
Ecological purity of sawdust as fuel. Their combustion practically does not release toxic substances into the atmosphere, unlike a number of liquid and gaseous energy carriers.
Easy to operate and maintain. Almost everyone can use equipment that runs on sawdust and wood chips. And its installation does not require permission from regulatory authorities, as when connecting a gas appliance.

Naturally, such a system also has disadvantages. Among them, it is worth noting the difficulty of storing material that is highly flammable.

This problem is partially eliminated by pressing the fuel, however, sawdust still needs to be stored in a fairly spacious room.

Another disadvantage is the need for periodic cleaning of chimneys, which is due to the large amount of soot and ash generated during operation.

In general, the positive effect that the method of heating rooms with long-term burning of sawdust gives is much greater compared to some of its disadvantages. This means that such systems have a right to exist. And, moreover, over time they can supplant traditional heating options.

Device and manufacturing methods

The principle by which sawdust boilers operate is simple. Combustion of raw materials is carried out using controlled long-term combustion, a three-stage supply of atmospheric air and secondary afterburning of combustion products. In this case, the fuel goes through several stages:

loading into the bunker where the auger is located, which is most often located outdoors;
entering by means of a worm gear into the sawdust storage;
sending to the next tank connected to the combustion chamber;
entering the boiler furnace, in which the ignition and combustion of raw materials occurs, as a result of which the heat exchanger heats up, and the heated air is discharged either into the gas generation chamber (where secondary combustion of combustible gases is carried out), or directly into the smoke exhaust system.

Boiler design

Typically, such equipment consists of the following elements:

devices for feeding raw materials;
grate bars located in the grate part of the equipment;
waste collection containers;
distributor of air heated in the furnace;
furnaces where fuel combustion occurs. It has a number of holes located in a special order, allowing you to control the air supply and, accordingly, ensure uniformity of long-term combustion;
heat exchange unit, where gases exit, heat the coolant and then flow into the chimney.

Protective systems and operating modes

In addition to the main parts, the device, which operates on sawdust and wood chips, is equipped with fire protection systems, due to the presence of which it can be considered safe enough for heating residential premises.

The equipment may also have smoke detection sensors that provide timely warning of a fire. And the automatic sawdust boiler can operate in several modes:

Maximum

It is used when there is a significant amount of fuel in the firebox. As the air and water heat up, the equipment gradually reduces combustion intensity, ensuring efficient use of raw materials.

Average

Allowed if longer heating times are required. In this case, fuel is consumed in a much smaller volume until the room temperature drops to the minimum permissible value. At the same time, the mode switches again to a more intense one.

Equipment capable of operating in this way is called long-burning devices using sawdust and wood chips.

"Pause"

It is used when the boiler is no longer needed for heating. The fuel combustion stops and the device cools down.

Independent production and installation

Instead of buying such a necessary and efficient heating device, you can make it yourself. To create a sawdust boiler you will need the following tools and materials:

several pipes: with a rectangular profile 60-40 mm and round ones with a diameter of 4 and 5 cm;
welding machine and electrodes for it;
angle grinder (“grinder”).

The pipe sections should be selected so that they fit inside the boiler with dimensions of 36x40x80 cm. In this case, structures of rectangular cross-section will be used as vertical posts in which round holes are cut for the remaining parts. It is worth considering that on the side where the door will be located, the diameters of the pipelines will be 50 mm. In the back of the cauldron, the dimensions of the first 4 cut rectangles should be 5x6 cm, and the next four - 4x4 cm.

The supply of pipes for cold and heated water is ensured by cutting round holes with a diameter of 5 cm.

Welding the front and rear parts of the device is carried out as follows:

rectangular posts are welded;
round pipes are connected to them so that they are located perpendicular to the floor of the room;
coolant supply and discharge pipelines are connected to the boiler;
the ends of all open pipes are welded using pieces of metal.

Now you can check the sawdust boiler for leaks - pour liquid into the pipes and check for leaks.

After this, the equipment is mounted in a brick firebox. You can also make it yourself using refractory bricks as the material.

Boiler features

Sawdust boilers available on the domestic market (most of which also operate on wood chips) have a power from 10 to 500 kW. Taking into account the use of 1 kW to supply heat to approximately 10 sq. m, this means that with the help of such equipment it is possible to heat rooms with an area of up to 5000 square meters. And for their work they will require from 2 to 100 kg of raw materials per hour. Homemade devices can have almost any power, however, they are usually made to provide heat of 100–500 square meters. m.

The advantages of such long-burning boilers compared to conventional systems are:

the ability to work on wood chips, sawdust and pressed shavings (pellets);
maximum efficiency;
high air heating rate;
used not only for heating, but also for obtaining hot water, drying things, and even for cooking and heating food.

Long-burning boilers operating on wood chips and sawdust are installed only on the floor. Their wall mounting is not possible due to the excessive weight of the equipment. These devices are maintained quite simply - ash is removed no more than 1-2 times a month for a boiler used in residential premises, and once a week for industrial equipment.

A good alternative to gas heating equipment are solid fuel boilers using sawdust and wood chips. Fully autonomous sawdust and chip boilers are suitable for heating private and industrial facilities. Boilers are especially popular among cottage owners.

How does a sawdust-chip heating boiler work?

Modern household solid fuel boilers using wood chips and sawdust are completely autonomous stations that require refueling once or twice during the entire heating season. During operation, automatic fuel supply is used into the bunker and subsequently to the burner device.

To increase efficiency, instead of the usual method of burning wood chips, the principle of gas generator or pyrolysis combustion is used. The supply of sawdust and air is controlled by sensitive automation connected to thermostats. The error in adjusting the heating of the coolant is only 1-2°C.

The principle of operation of the burner for wood chips and sawdust

A long-burning solid fuel boiler using sawdust and wood chips operates on the principle of gas generation or pyrolysis. Screw fuel supply is used. The operating principle of a sawdust-chip boiler is as follows:

The efficiency of boilers operating on sawdust and wood chips reaches 92%. The use of a lambda probe in the device allows you to adjust the performance within the range of 30-100% (depending on the actual heat needs of the room), which increases the efficiency of the station.

Systems for supplying chips and sawdust to the burner

Automatic solid fuel boilers for long burning on wood chips and sawdust with automatic loading, minimize the need for maintenance. Fuel is supplied via several screw conveyors. The submission is carried out as follows:

Using sawdust or wood chips as fuel for a hot water boiler is especially beneficial if there is a fuel source nearby: woodworking.

Automation of cleaning and ash removal

Heating systems for private houses and cottages using solid fuel boilers, burning wood chips and sawdust, provide maximum automation of work. Removing soot, cleaning the ash pan and the internal smoke channel are carried out through self-cleaning. For this purpose, the following components and systems are installed in the boilers:

The automatic ash removal system effectively cleans the boiler. Station maintenance is required no more than once every 1-2 months.

Requirements for wood chips and sawdust

It is correct to heat the boiler with sawdust that complies with GOST 18320-78. According to current standards, raw materials must contain:

No more than 8% bark.
5% rotten remains.
0.5% mineral impurities.

All sawdust undergoes mandatory double screening. After screening, raw materials with a diameter of 10 to 30 mm remain. The use of sawdust or wood chips for heating a country house or cottage that contains impurities and metal inclusions is strictly prohibited.

The boiler is able to operate on wet wood chips, but at the same time its thermal efficiency decreases. The pyrolysis process is possible only at a maximum humidity of no more than 20%.

The optimal sawdust moisture content for the pyrolysis process is 20%. This percentage of moisture contains raw materials produced in special processing plants and intended for heating.

Norms and rules for arranging a boiler room for a sawdust-chip boiler

Operation of a sawdust-chip boiler is associated with the risk of fire. When installing and subsequent use of the station, compliance with safety regulations and regulations is required. The main requirements for the boiler room are:

Electrical equipment of the boiler room, metal parts of the boiler and screw transmission, are grounded. Connection to the power supply network is carried out directly to the switchboard. They install automatic machines and RCDs. Additionally, a voltage stabilizer and an alternative power supply source (generator or) are connected.

Which heating equipment using wood chips and sawdust to choose

In addition to productivity and fuel storage volume, when choosing a suitable station, you should pay attention to the country that manufactures the equipment. The market offers boilers from European and domestic manufacturers:

Boilers from European manufacturers are distinguished by high reliability of automation and mechanized fuel supply. The stations are equipped with a self-cleaning system, have high accuracy of adjustment and are equipped with a modulation system for changing power. Among European manufacturers, systems produced by the following companies stand out:
Russian boilers - the main advantage is their low cost. On average, fully equipped systems will cost approximately 500-800 thousand rubles, compared to European analogues, the cost of which starts at 1.5 million. Russian boilers are adapted to the realities of domestic conditions. Not picky about fuel quality.
The disadvantage is a not fully thought-out fuel supply mechanism that causes malfunctions, an insufficient safety system, and minor design flaws that reduce performance.

European boilers are suitable for those who value comfort and safety above all else and are willing to pay for it. Russian equipment is a budget version, inferior in efficiency, reliability and autonomy.

Pros and cons of choosing a sawdust-chip boiler

The design of a pyrolysis boiler with automatic loading of sawdust and wood chips has several advantages and disadvantages. Judging by customer reviews, before purchasing a station, it is worth considering the following nuances:

Large footprint - the boiler is located in two adjacent rooms. Installation requires additional refurbishment of each room.
High cost - compared to a conventional solid fuel boiler, an automatic station has a price of 3-5 times more.
Autonomy – a boiler equipped with a mechanized fuel supply can operate throughout the entire heating season without stopping.
Economy – automation regulates the combustion process, choosing the most economical mode. Power modulation is possible within the range of 30-100%, which is unattainable for a conventional solid fuel boiler.

If you have enough funds, purchasing a pyrolysis boiler that runs on wood chips and sawdust is quite justified. The costs are recouped by the station's complete autonomy, high safety and operating comfort.

A universal-to-use, economical and easy-to-maintain sawdust boiler with your own hands will completely solve the problems with heating a country house or a small country house. The use of wood chips as fuel reduces the homeowner's heating costs, while such installations are highly functional and can operate on one fill for several days.

Operating principle of the boiler

Today, there are various designs of heating boilers operating on sawdust. These can be classic potbelly stoves with a thermal circuit connected to them. Modifications in which there is no ash pan are very popular, and fuel is loaded from above using a hopper and a mechanized auger, which makes it possible to automate the operation of heating equipment.

Modifications of boilers with a bunker are not only efficient, but also make it possible to significantly simplify the heating of a private home. The homeowner will not have to top up the fuel every day, and if high-quality dried sawdust is used, such heaters will be as efficient and economical as possible. Some modifications, which are equipped with larger combustion tanks and additional bins with sawdust, can operate on one load of fuel for 5-6 days, providing heat to a private house with an area of 150-200 square meters.

DIY pyrolysis boiler

The operating features of heating devices of this type include the following:

Possibility of adjusting the air supply to the burner.
Large volume of firebox.
Increased area of the water jacket and heat exchanger.
Depending on the modification of the boiler, fuel combustion occurs from top to bottom or bottom to top.

Autonomous heating boilers using sawdust, which use the pyrolysis principle of operation, are popular. Such installations have several combustion chambers at once, allowing to significantly increase the efficiency of the equipment. In the lower firebox, the fuel smolders; under the influence of high temperatures, gas is released from the wood, which is burned in the upper compartments, which ensures the highest possible efficiency of the equipment.

Such long-burning sawdust boilers have a design similar to solid fuel pyrolysis plants. The only difference is the presence of an additional bunker and a special screw system that automatically supplies fuel to the combustion chamber.

Equipment advantages

The popularity of heating devices that run on wood chips is largely due to the numerous advantages of this technology. Handmade A long-burning sawdust boiler has the following advantages:

Safety of use.
Ability to control raw material consumption and temperature conditions.
Environmental friendliness of the equipment.
Minimum fuel costs.
Fast heating of the room.
High efficiency.

Self-made sawdust boilers are characterized by versatility and efficiency. With the help of such heating equipment, you can easily heat a room of any size. Thanks to the simple design of the device, you can make it yourself, and subsequently you can buy fuel for free at sawmills or buy ready-made dried pressed sawdust briquettes.

One of the disadvantages of sawdust boilers is their increased requirements for fuel quality and its moisture content. You will also need to periodically clean the chimney from ash and soot. The efficiency of the equipment and its operational safety will directly depend on the correctness of such maintenance.

Solid fuel pyrolysis boiler for: wood, sawdust, shavings, chips, biomass, pellets, briquettes

Operating modes and protective systems used

Factory models of boilers operating on wood chips and sawdust are equipped with various safety systems that prevent fire of the equipment, as well as its overheating. Some models also have additional sensors that detect high levels of carbon monoxide and can detect smoke, thereby warning of the danger of fire.

The equipment can operate in several modes at once:

Maximum performance.
Average power.
Pause mode.

The maximum operating mode of the boiler is activated immediately after turning on the equipment and if the required amount of fuel is available in the bunker. As soon as the coolant and air in the room warm up to the required level, the automation will independently reduce the intensity of combustion, which will ensure efficient use of fuel.

The medium power mode allows the equipment to operate for as long as possible on one load of fuel. The intensity of sawdust combustion in the firebox is regulated by increasing or decreasing the flow of air into the combustion chamber. When this mode is activated, the boiler, equipped with additional automation, can maintain the room temperature at a given level.

In the “Pause” mode, the boiler does not heat the room, and fuel combustion stops or its intensity is reduced to a minimum. Subsequently, the homeowner can quickly heat the boiler by switching it to medium or maximum operating mode.

The presence of boiler operating modes allows us to guarantee the ease of use of the heating device, increasing the safety of its operation. With an automatic control system, the homeowner can set the required coolant temperature at will, and the built-in sensors will reduce or increase the heating intensity, ensuring comfortable living in a private home.

Long-burning mine boiler 25 kW on sawdust EVERYTHING from IGNITION to DYING. Video 1 / 2

Basic fuel requirements

The efficiency of a solid fuel boiler will largely depend on the quality of the fuel. It is recommended to use well-dried small chips of various types of wood. The following requirements apply to sawdust:

Certain modifications of boilers, which have the function of auto-loading fuel from the bunker, cannot work with sawdust with a moisture content of more than 40%. Therefore, due attention must be paid to the quality of chip drying. For the convenience of loading and storing such fuel, compressed sawdust is often used, which is offered at affordable prices, which significantly reduces the cost of heating a private home.

DIY making

On sale today you can find various modifications of autonomous heating boilers that burn wood chips and sawdust. Despite all their advantages, they have one significant drawback - the high cost of equipment. Therefore, many summer residents and owners of private houses make universal boilers on their own, since the simple design of such equipment allows you to construct it even in the absence of relevant knowledge and experience.

To make a wood chip boiler with your own hands, you will need the following tools and materials:

On the Internet you can find various drawings of the design of boilers operating on sawdust and wood chips. The easiest way to make such heaters is on the basis of a pipe or gas cylinder. You just need to use durable thick-walled steel, which will ensure the durability of a self-made boiler.

At this point, the work on manufacturing the heating boiler is completed. It is necessary to carry out a test run, check the quality of welding, and also make sure that there are no leaks in the water jacket, along the contour of which the coolant circulates. In the future, it is possible to modernize the heating boiler, to which a hopper with sawdust and a screw mechanism for automatically loading chips into the combustion chamber are additionally mounted.

Mine boiler on sawdust

By making a homemade pyrolysis boiler using sawdust and wood chips, you can not only solve problems with heating a small private house or country house, but also reduce the cost of living outside the city in the winter season. In specialized stores you can purchase ready-made industrial boilers that have one or two circuits, are completely safe to operate and are equipped with automatic control.

If necessary, it is possible to produce universal versions of autonomous heaters, which will differ in their power ratings, duration of operation from one fuel fill, as well as a number of other characteristics.

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