What is good about a long-burning stove - types of fuel, do-it-yourself assembly rules

The lineup

Today there are many models of the Butakov stove on the market. Below we will consider the main ones.

1. The Gymnasist device, with a power of only 7 kW, is capable of heating up to 100 m² of area. The height of the chimney is 5 m.
2. The Student stove (9 kW) can heat a room up to 150 m². The maximum fuel volume is up to 20 kg. The height of the chimney is 5 m.
3. Professor Butakov’s “Engineer” unit (15 kW) will heat a room up to 250 m². The maximum fuel volume is 40 kg. The height of the chimney is 5 m.
4. The Docent stove (25 kW) will heat a home up to 500 m². The design can hold up to 100 kg of flammable substances. The height of the chimney is 6 m.
5. The “Professor” device (40 kW) is capable of heating up to 1000 m² of housing. The maximum fuel volume is 200 kg. The height of the chimney is 8 m.
6. The Akademik unit (55 kW) can warm up a house with an area of ​​up to 1200 m². The stove can hold up to 240 kg of flammable material.

Each model has its own dimensions. The larger the fuel space and firebox, the larger the dimensions of the stove.

The optimal choice of device depends on its purpose and the area of ​​the premises requiring heating.

The compact stove “Gimnasist” can heat up to 100 square meters. meters. Its chimney goes up, so this unit is suitable for country houses and garage buildings. For other models, the chimney exits to the top or is located at the rear of the structure. They are mainly installed in large rooms.

Long-burning pellet stoves

One of the types of gas generator boilers are stoves that operate on wood granules - pellets. A special hopper is required to load granules.

In general, a pellet stove is quite simple and easy to use. The process of loading granules is automated using self-regulating pneumatic or screw devices. The operating mode is also adjustable.

The tank for heating water can be of any size, it depends on the dimensions of the cast iron stove. The main thing in such a tank is the material of manufacture. Steel must withstand prolonged exposure to high temperatures and aggressive environments.

In order to connect the water heating tank to the water system, special pipes are provided. They are installed closer to the chimney, or at the junction of the chimney and the combustion chamber.

How to light a stove correctly Engineer

The air-heating boiler Professor Butakov performed by the Engineer, working on wood and coal, a derivative model Hydraulic with a built-in water circuit, have a common structure and principle of operation.

The company has prepared some recommendations regarding the correct firing of stoves:

• Air pockets form in the chimney, especially after a long break in operation. If you immediately turn on the stove at full power, backdraft will appear and smoke will flow into the room. Therefore, to begin with, the stove and chimney duct are heated by burning a small volume of finely chopped splinters. The firebox is started at full power after 10-15 minutes of maintaining a low-intensity flame.

It is wrong to heat a stove exclusively with coal, and the Engineer and Engineer Hydraulic series are not intended for this type of fuel at all. The coal boiler is initially heated with wood. After heating the firebox and creating the required temperature, a portion of coal is poured on top. Some experienced users recommend that the fuel be laid in layers. A layer of firewood, a layer of coal. This prevents overheating of the combustion chamber, and during combustion, the soot burns out at the same time. Learning how to properly fire a Termofor Engineer coal stove is not at all difficult. After 2-3 kindlings in accordance with the instructions set out in the documentation from Termofor, the firebox will become a familiar and everyday activity.

All long-burning wood stoves for the Engineer house operate in gas generation mode. In order to force solid fuels to release flammable carbon dioxide, certain conditions must be created. After heating the combustion chamber to a temperature above 200°C, the gate valve is closed.

The characteristics and thermal efficiency of stoves declared by the manufacturer are only possible if the conditions for using firewood with a relative humidity of no higher than 20% are met.

Pros and cons of long-burning stoves

There are many advantages that economical wood stoves have:

1. Maximum complete combustion of the solid fuel load. For this reason, boilers that burn wood for a long time have excellent efficiency, reaching 85%.
2. These heating units are quite easy to clean and maintain, since after the wood has burned through, there is practically no ash left.
3. Environmental friendliness of the pyrolysis process. With complete combustion of natural organic compounds, the only oxidation products are carbon dioxide and water vapor. In a pyrolysis furnace, solid fuel decomposes completely, so all kinds of industrial waste can be used as a source of thermal energy, which under normal conditions is allowed to be burned only at a considerable distance from residential buildings in specially equipped landfills.
4. You will need to load the next portion of firewood or other solid fuel much less frequently, or rather once every 10 to 15 hours, which is an undeniable advantage of these units compared to conventional stoves and potbelly stoves. Some models of factory-made pyrolysis boilers are capable of operating for a longer period of time on one bed.
5. Fast heating of the coolant, provided there is a heating heat exchange circuit for private houses.
6. The ability to perform precise and high-quality adjustment of the unit’s power indicator. Under normal operating conditions, it is quite difficult to control the operation of heating devices using solid fuel compared to analogues that use gaseous or liquid fuel. Since in a long-burning wood-burning stove the gas released during the pyrolysis process is burned in a special compartment, this problem can be solved quite easily.

Pyrolysis plants have a number of disadvantages, including:

1. High price for ready-made heating boilers. This negative point can be eliminated if you make economical wood-burning stoves with your own hands.
2. Increased requirements for the moisture content of solid fuels. If you decide to use poorly dried firewood and try to put the unit into operation before it is completely dry, the fire will most likely go out and the full pyrolysis process will not be completed.
3. Quite large dimensions. In addition to the fact that it is necessary to prepare a place for installing a pyrolysis boiler, it will be necessary to arrange the area where solid fuel will be stored.
4. Inability to provide fully automatic operation. Firewood must be loaded into the unit manually.
5. When installing an industrial model of a pyrolysis boiler, additional blowing of the combustion chamber is often provided and pumping equipment is installed to circulate the working medium in the heat supply circuit. Therefore, for the uninterrupted operation of the installation, it is necessary to ensure a high-quality power supply.
6. There is a risk that the pyrolysis chamber may go out as a result of using too cool coolant coming from the heating circuit. To prevent such a nuisance, a bypass pipe called a bypass is installed in the device. Using it, hot water is added to the cooled working medium. As a result, the design of the heating boiler becomes more complicated and at the same time its price increases. But a self-assembled pyrolysis stove without connecting a heating system does not have this drawback.

Advantages and disadvantages

The devices have a whole list of advantages that are very valuable for products of this kind. Among them it is worth highlighting the main aspects:

• quite convenient installation that does not require specific skills and the construction of additional foundations;
• rapid removal of ash, which can be done even during combustion;
• The design of the heating stove by Professor Butakov “Student” provides for an organic combination with any interior.
• large heating area;
• presence of air cooling;
• sufficient dimensions of the heating surface;
• functional firebox, equipped with control of air supply, as well as combustion intensity;
• replaceable grates.

However, despite such a number of positive qualities, there are also some disadvantages. These include:

• strong surface heating;
• the need to wet the ash before removing it from the firebox;
• requires the use of enhanced thermal insulation for chimneys.

Nevertheless, the Student heating stove has many more advantages than disadvantages that do not affect the functionality of the device.

Characteristics

Considering that the Butakov “Student” furnace has various modifications, their sizes and technical characteristics differ significantly. What these devices have in common is the presence of built-in convective channels used to increase heat transfer. Depending on the type, stoves can work both to heat air and provide water heating.

In this mini-review we will look at stoves from.

Wood burning stove

This device is characterized by maximum thermal efficiency and high efficiency, in comparison with coal analogues. It has the following features:

1. Tightness of the combustion chamber - the door closes securely, eliminating the formation of cracks.
2. Improved control of air supply - the unique design of the gate valve allows you to set gas generation or simply combustion modes.
3. High-quality materials - thick-walled structural steel was used to make the body, cast iron was used for the grates and doors.

In addition, the device is characterized by relatively small dimensions, which are:

• 530*780*370 mm;
• chimney pipe diameter 120 mm;
• weight of the entire oven is 77 kg;
• firebox volume 74 l;
• power reaches 9 kW;
• Efficiency is 85%.

The Student stove has an amazing ability to prevent soot from contaminating work surfaces. Even long-term use will not affect the cleanliness of the glass. The burning duration allows you to make bookmarks no more than once every 6-7 hours. The device is equipped with a replaceable grate, which allows air flows to be evenly distributed in the fuel chamber. This eliminates the formation of soot. The design of the ash box allows it to be cleaned without interrupting the combustion process.

Coal furnace

When designing these heating furnaces, the intensity of the thermal load was taken into account. The device has the following characteristics:

• weight – 77 kg;
• firebox volume – 70 l;
• dimensions – 530*370*780 mm;
• Efficiency – 85%;
• Power – 9 kW.

Burning coal requires more oxygen than wood, but produces significantly more heat. Thanks to the 5 mm wall thickness, metal deformation, which can cause rapid breakdown of the furnace, is eliminated. The tightness and thoughtfulness of the design can significantly reduce coal consumption. A similar stove by Professor Butakov “Student”, operating on coal, is an ideal option for systematic heating.

Hydraulic

Thanks to the unique design of the heat exchanger, the long-burning Student water-heating stove has a fairly high heat output. The usual coils in it were replaced with convective channels, partially recessed into the firebox. Thanks to these features, the liquid is intensely heated and enters the heating system. This large-sized device has the following characteristics:

• weight - 90 kg;
• power - 16 kW;
• firebox – 70 l;
• dimensions – 720*370*770 mm;
• Efficiency – 85%.

In addition, the design provides for the installation of heating elements, which allows you to maintain the temperature of the coolant for a long time.

Features of the “Student” furnace design Hydraulic

Attention! Electric heaters can be installed independently or purchased together with the boiler

With or without water circuit?

The need to install water heating is dictated by the conditions in a particular case.
You can do without radiators in a small 1-2 room house if you ensure good air circulation or place the heating device in both rooms. But even then it is difficult to protect the walls from freezing in the corners.

It is also worth refraining from installing a water circuit if the home is periodically left without an owner (but there are alternative solutions for this too - modern technology allows you to set economical modes that maintain temperature at around +5 °C without human intervention).

The routing of pipes with coolant will allow you to heat all rooms in the house and distribute the heat more evenly. Most long-burning boilers are equipped with good built-in heat exchangers that are easy to connect to the heating system of the house.

All about stove installation Engineer

To facilitate installation, each Termofor oven comes with detailed installation instructions. The company has thought out a convenient and simple design that facilitates installation work.

To begin installing the Engineer furnace with your own hands, you should begin by determining the location. It will not be unimportant to decide which chimney to use when connecting.

To heat adjacent rooms, a heat sink is installed on air heating furnaces for routing air ducts, and a heating system pipeline is connected to water heating models. After installation, the stove will be able to effectively heat the entire building, and not just the room in which it is installed.

Requirements for placement

The efficiency and uniformity of heating largely depend on the correct location of the stove. For normal operation, the Engineer stove needs a large volume of air and no obstacles in the way of convection currents.

An essential condition is compliance with fire safety rules. Some points that must be followed are contained in the instruction manual. In particular, it states:

• The stove is installed on a non-combustible base.

Protection is provided for walls and ceilings (where the chimney passes) when installed in a wooden house. The section of the wall adjacent to the stove is insulated with non-flammable insulation, and then covered with steel sheet or brick.

The surface of the chimney is heated to a temperature of over 200°C, which, according to the rules of PPB, requires the use of a special passage unit filled with mineral insulation when passing through floor slabs and roofing.

The special design and the use of a special base simplifies the installation of the Engineer furnace and makes it possible to do the connection yourself.

Which chimney is better

Solid fuel heating equipment belongs to the class of furnaces with high flue gas temperatures. During combustion, inside the combustion chamber, the heating intensity reaches 450-550°C. Although due to the use of gas generation, the smoke at the outlet cools significantly, the temperature still remains sufficient to lead to burnout and deformation of a conventional steel chimney.

Additional requirements apply to traction characteristics. Insufficient pressure leads to backdraft, air locks and other operational difficulties.

Reviews from owners and practice have shown that the optimal choice for convection and water heating stoves is a sandwich pipe and a ceramic chimney. An additional advantage of the systems is the simple installation of the chimney yourself. Sandwich pipes and ceramics are assembled like a construction kit and do not require special skills for installation.

On the Internet you can find negative reviews about the stoves of Professor Butakov Engineer, but they are rather the exception to the rule. Basically, owners point out the advantages of Termofor products:

• Affordable price.

Long service life.

A simple design that allows for independent installation of the stove in the house.

Thermal efficiency due to the ability to connect to a water heating system and air ducts.

All of the above factors ensure uninterrupted and comfortable operation of the Butakov stoves of the Engineer series and explain the popularity of the models among Russian consumers.

User manual

Some consumers complain about the rapid combustion of solid fuel in the stove. But experts insist that they install and operate the unit incorrectly. The fuel must not only be placed correctly, but also ignited correctly.

Stack firewood correctly

In order for it to smolder as long as possible, you first need to set fire to a small amount of wood and obtain coals. Then add solid fuel, after which it will smolder for 8-10 hours and give off a large amount of heat.

Basic recommendations:

1. Before putting the boiler into operation, it needs to be tested. This will help determine the optimal method for operating the structure.
2. To prevent objects from igniting from the hot stove body, it is installed at a distance of at least 40 cm from them.
3. During boiler operation, slag appears on the damper and inside the chimney. To get rid of it you need to use special cleaning agents “Miracle Log” or “Umbrella Pipe”, which increase the movement of the air mass in the chimney.
4. It is not recommended to use fuel from coniferous trees, as it emits an unpleasant odor or smoke, while fuel from deciduous trees (birch, aspen, etc.) fill the room with pleasant and environmentally friendly warm air.
5. The chimney must be open. Fuel can be placed horizontally or vertically in the firebox.

Furnace installation

Before installation, you should prepare a place for the heating stove. This does not require the installation of an additional foundation.

The stove is installed on the floor, on a flat, insulated surface (metal sheets on asbestos cardboard can serve as such a surface).

The base of the Butakov stove design is equipped with holes for fixing, so it can be fixed to the floor.

Adjacent walls also need to be insulated to a level 25 cm above the top edge of the stove. Plaster on a metal mesh or asbestos cardboard with a metal sheet serves as thermal insulation.

The distance from the wall to the stove must be at least 38 cm.

A metal sheet must be laid in front of the oven door.

The hole for the chimney should be thermally insulated.

The Butakov heating stove is installed in a prepared place made of non-combustible materials (for example, on a brick stand).

The last step in the installation is connecting the chimney to the tee and the stove.

Important! All pipe joints should be treated with heat-resistant sealant. Important! The chimney pipe should protrude 50 cm above the roof ridge

In this case, the part of the chimney located in open space must be insulated with material that can withstand temperatures up to +400 °C

Important! The chimney pipe must protrude 50 cm above the roof ridge. In this case, the part of the chimney located in the open space must be insulated with material that can withstand temperatures up to +400 °C

Be sure to insulate the hole in the roof with special material.

The space around the structure can be equipped with any heat-resistant and non-flammable material.

Making an economical wood stove with your own hands

Of course, purchasing a ready-made long-burning heating unit is easier than making it yourself. But, as already mentioned, such installations are inexpensive.

If you want to make an economical wood-burning stove yourself, you can use an old gas cylinder, metal barrel, sheet steel and other available materials suitable for this purpose.

First of all, you need to prepare the basic materials that may be required:

1. Metal drum with a capacity of approximately 200 liters without rust or other obvious damage. Its walls must be strong, made of cast iron or steel alloy.
2. An old large capacity fire extinguisher that will make a good base for the unit.
3. A section of thick-walled wide metal pipe.
4. An old gas cylinder.
5. Steel sheets with a thickness of at least 5 millimeters.

A boiler with a round base requires support legs, which can be made from:

• pieces of reinforcement;
• pieces of thin pipes;
• metal profile.

In addition, the home craftsman will need:

1. Steel sheet having a thickness of 5 millimeters. You will have to cut circles out of it, the size of which coincides with the diameter of the metal barrel.
2. Metal profile.
3. Stove door - you can purchase it or make it yourself.
4. Metal pipe with a cross section of 10 centimeters. Its length should exceed the diameter of the barrel by 15 centimeters.
5. A chimney pipe is 5 meters long and has a cross-section of 15 centimeters.

Advantages and disadvantages of the design

The undeniable advantages of this heating device include:

1. No negative impact on the environment and humans. The design feature of the fuel chamber creates conditions for complete burnout of the fuel used. Therefore, no harmful substances or combustion waste are observed.
2. Any detail of the design of such a furnace is endowed with high functionality and helps to increase efficiency.
3. High fire safety is based on two circumstances - the absence of an open flame and smoldering fuel (incomplete combustion).
4. High-quality materials used to make the body of the heating device and the hermetic design of the firebox ensure excellent reliability.
5. One portion of fuel provides a long operating cycle - from 8 to 12 hours.
6. These heaters take up little space in the room due to their optimal dimensions.
7. The extended service life, combined with an affordable price, is a good recommendation for purchasing and using the stove.

You may find this article about long-burning heating stoves useful.

Read an article on how to assemble a pyrolysis oven with your own hands here.

Butakov’s brainchild, the “Professor” stove, has certain disadvantages that do not have a significant effect on the process of heating the room:

1. There is a risk of burns from the extremely hot housing.
2. Increased dehumidification of the air space during the heating process requires artificial, forced humidification of the air in the room.
3. Short-term cooling of the combustion chamber leads to a rapid decrease in the temperature in the room.

The decision made to heat your own home or industrial premises with the Professor heating device will not allow you to experience disappointment when choosing this model. And the stove’s undemanding nature of fuel types will allow you not to bother with just one type of fuel.

Watch the video in which the user shares his impressions of the operation of the furnace Professor Butakov Associate Professor:

Furnace fuel

The fuel for long-burning stoves is wood with a moisture content of no more than 20% - this can be whole logs of the same length, waste from the wood processing industry, wood chips and other lumber. In addition, pellets, fuel briquettes, and coal are used. For this type of furnace, it is better to choose brown coal, since other types are more energy-intensive, which can lead to burnout of the surfaces of the walls of the device, especially if the furnace is made in a combined version, that is, assembled from different materials, and steel is used as the walls of the firebox.

The quality of heating is greatly influenced by the moisture content of the fuel, since damp wood significantly reduces the efficiency of the device and also contributes to the formation of soot deposits on the walls of the chimney. In addition, the pyrolysis processes in such wood are defective.

Device

Design of the "Engineer" furnace. (Click to enlarge)

In terms of design and principle of operation, the “Engineer” is practically no different from other models of heating stoves “PROFESSOR BUTAKOV”.

The body of the furnace-boiler is an all-welded structure of an original shape (truncated parallelepiped), made of steel and coated with black anthracite-colored silicone paint.

Inside the housing, in the front and rear parts, there are built-in convection pipes, through the lower part of which cold air is drawn in, passing along the housing, heated, rises, exits through the upper part of the pipe and is distributed throughout the room through special openings-air ducts.

The presence of a large replaceable grate ensures uniformity and duration of combustion of the firebox over its entire area. The bottom of the firebox is protected from burnout by a heat-resistant grate. As a result, all surfaces of the stove participate in heating the room.

The door rotates on hinges 120 degrees, has a special seal and a reliable locking mechanism.

These stoves use solid fuel as fuel - pressed cardboard, firewood, wood waste, peat, brown coal. At the bottom of the furnace there is a capacious box for ash, which is poured into it through the slits of the grate, and which can be emptied of ash without interrupting the operation of the furnace.

The base of the boiler has mounting holes for fixing the stove to the floor.

At the same time, the Engineer stove has a number of distinctive (besides the above) features and characteristics:

• she weighs 100 kg;
• its dimensions are 440×645×800 mm;
• firebox volume -120 liters;
• chimney pipe diameter is 120 mm;
• efficiency factor (efficiency) - about 85% (increased heat transfer is achieved through the use, like the Student furnace, of pipes with a large diameter and thinner walls.)

In addition, the Engineer series has 2 modifications:

• with steel door;
• with a cast iron door with heat-resistant glass.

Accordingly, prices for each model also differ: in different stores they vary between 14,000-16,000 rubles. and 18,000-20,000 rubles.

Several popular models of long-burning cast iron stoves

In order to make it easier to choose a long-burning cast iron stove, it makes sense to consider several models that, perhaps, will immediately appeal to someone.

Long-burning heating and cooking stove “ISOTTA CON CERCHI”

Cast iron stove "ISOTTA CON CERCHI", designed for additional or main heating of residential premises. It can operate in normal mode or as a long-burning device.

Cast iron stove "ISOTTA CON CERCHI"

The oven is made of high-quality cast iron and has double walls, between which heated air flows circulate. The model is equipped with a hob that can be closed with a protective lid if necessary. During cooking, this hinged panel serves as a protective screen for the wall and prevents greasy drips, steam and other contaminants from entering it.

The oven design includes a side loading door for loading longer logs.

The combustion door has panoramic heat-resistant glass that can withstand heating up to 750 degrees. The glass door also allows you to use this stove model as a fireplace, since the playing flames are clearly visible through it.

The drawing, with the dimensions indicated on it, looks like this. Using it, you can “try on” this version of the stove in its intended place.

Drawing of the furnace "ISOTTA CON CERCHI"

The table below summarizes the main technical characteristics of this device, which will also help you make your choice:

Additional useful information provided by the manufacturer:

• This model is capable of working on firewood, pellets and fuel briquettes; the use of brown coal is acceptable.
• The service life declared by the manufacturer is at least 35 years.
• A sufficiently large surface area of ​​the stove warms up well and transfers heat to the premises.
• The door of the air supply channel, which serves as a regulator of the combustion intensity of the fire, can be closed completely, creating the necessary conditions for long-term combustion, that is, the smoldering of firewood with the release of pyrolysis gases and their subsequent afterburning.
• The secondary air supply channel plays an important role in the process of afterburning the released pyrolysis gas. In addition, it serves to blow glass to protect against deposits formed during combustion - soot and soot.
• A well-adjustable gate valve will help ensure optimal traction, extend the service life of the device, as well as ensure quick ignition without smoke and increase efficiency.
• The lid installed on the hob has an automatic stopper that snaps into place when it is opened and locks it in the desired position.

The oven is capable of heating up to 260 m³ (100 ²) of volume in less than an hour. While in the heat maintenance mode, the outer walls of the stove heat up to 80–85 degrees, and it works like a decorative fireplace that heats a small area.

When the stove is set to long-burning mode, it is able to maintain heat for 8-10 hours, and its efficiency can reach 90%.

Prices for ISOTTA CON CERCHI

ISOTTA CON CERCHI

Long-burning heating stove "INVICTA Carolo"

Long-burning cast iron heating stove “INVICTA Carolo”

The INVICTA Carolo long-burning heating stove model is equipped with heat-resistant glass and slot convectors. This model has the following technical characteristics:

"INVICTA Carolo" is made entirely of cast iron and has double walls, which significantly increases the efficiency of the device. The heating device is equipped with two channels for supplying primary and secondary air, which allows the use of a system for afterburning pyrolysis gas released from wood. The design of the device ensures constant slow combustion from 6 to 10 hours on one load of fuel.

The stove is capable of heating rooms with a total area of ​​100 m², subject to high-quality insulation of the house.

"INVICTA Carolo" is made in a classic style and has a rectangular shape. A fairly large heat-resistant glass is equipped with a self-cleaning system, which allows you to see the mesmerizing reflections of the flame. Therefore, the stove can easily be used as a fireplace for spending pleasant evenings, sitting with a cup of tea near the fire. And this despite the fact that about 25% of thermal radiation enters the room through the glazed door.

You may be interested in information about what types of long-burning wood-burning fireplaces for summer cottages are available

Long burning stove made of cast iron "Gomont"

The Gomont fireplace stove has a rather elegant appearance, different from the appliance options mentioned above. Made in a discreet style, it will fit into any modern interior. The glass in the door is made from heat-resistant glass ceramics “SCHOTT ROBAX”, which is resistant to high temperatures. The large size of the transparent part of the door, which is equipped with a self-cleaning system, allows you to observe the beautiful processes occurring in the combustion chamber.

Cast iron fireplace stove “Gomont”

The technical characteristics of the Gomont stove are as follows:

The furnace has channels for supplying primary and secondary air. There is a spacious ash drawer, which is hidden behind the oven door. Adjustment of the fire burning intensity, as in all long-burning stoves, occurs by supplying more or less air flow.

The manufacturer's warranty for this product is 5 years.

You may be interested in information on how to build a flint stove with your own hands (drawings)

Another example of a long-burning cast iron stove made in France is in the attached video:

Video: Tomera cast iron stove

Long-burning stove-fireplace “La Nordica Rosa”

This version of the stove has an original design, which is perfect for both modern and retro-style furnishings. Its external decoration is not only decorative, but also functional, as it is capable of keeping the device hot for a long time, but preventing its external surfaces from heating up to too high, dangerous temperatures.

A very original and functional model - long-burning stove-fireplace “La Nordica Rosa”

This version of the heating and cooking stove is made of several materials, so it can be called combined.

Its internal structure is made of high-quality cast iron, and the body is made of high-grade steel. The cladding made of natural stone or ceramics gives the model an aesthetic and elegant appearance.

The oven is equipped with a hob and oven, which has an internal heat-resistant enamel coating.

The technical characteristics of this device are given in the table:

The device has channels for supplying primary and secondary air, which allows you to adjust the air flows entering the combustion chambers from the outside. The glass is made of glass ceramics that can withstand temperatures of 750 degrees.

The stove is capable, with good adjustment, of burning one load of firewood with effective heat transfer to the premises for at least 8–9 hours.

The stoves are available in two color finishes - burgundy and beige (cappuccino), which also helps them adapt to different interiors.

In conclusion, it should be added that the range of long-burning cast iron heating stoves is so large that it is possible to choose an option for every taste and income. There are models that are simple in design and design, which have a relatively low cost - they are perfect for installation in the country. And if desired and possible, you can also find expensive options lined with decorative ceramic tiles, perfect not only for heating needs, but also for decorating any, even the richest, living room. You can find out the calculator for calculating the heating of a private house by following the link.

You might be interested in information about how a two-bell heating stove works

Prices for La Nordica Rosa

La Nordica Rosa

Preparing pipes and parts

The oven has an outlet of 14 convection pipes. The diameter of the chimney outlet is 200 mm; we purchase it ready-made from a corrugated ventilation pipe.

For manufacturing we will need to prepare several parts. From 4 mm sheet steel we cut out:

• 2 side parts measuring 800/950 mm. The second dimension is the height of the structure;
• For the front and rear walls, we use a grinder to cut out parts 1110/670 mm. After final assembly, the protruding metal will be cut off and can be used as reinforcement for the base;
• for the top we cut out a piece measuring 350/950 mm. It is necessary to mark 6 holes of three pieces on the narrow sides and drill or cut them by welding. Pipes with a diameter of 40 mm will come out of them;
• for 2 side jibs, cut the workpiece to a size of 200/950 mm;
• for the base you can use a corner with a 100 mm shelf or a channel. 2 pieces 950 mm and 2 lintels 470 mm each. It is necessary to make holes in the base for the pipes, which must be coaxial with the top ones;
• For convection pipes we use steel parts with a cross section of 40 mm. 6 of them are straight, they run along the front and back walls. There are 4 holes on the jibs. 8 pipes will need to be bent to a certain angle. It is better to do this on a pipe bender.

You will also need to leave a sheet for making a door and an ash drawer. To make a grate, you can use a sheet 10 mm thick, making longitudinal grooves in it with a grinder. You can weld a grid from reinforcement or a rod with a diameter of 8-10 mm.

To install the grate, we will prepare several pieces of corner. It is better not to secure the grate tightly; this will make it easier to replace and maintain the stove. A hole is marked on the top part and made for connection to the outlet pipe. You will need to prepare a section with a cross-section of 180-190 mm and a length of 170 mm.

Design and principle of operation

Professor Butakov’s “Associate Professor” stove has a simple but original design, consisting of:

• all-welded 2-chamber body;
• straight and curved convective pipes built into it;
• gas guide screen;
• jets for dosing the intake of secondary air;
• firebox;
• grate;
• ash pan, where there is a special container for collecting ash;
• metal door of the combustion chamber or combined with heat-resistant glass;
• gate welded to the body;
• chimney.

The operation of the furnace is carried out with the simultaneous flow of pyrolysis and convection processes:

• The pyrolysis process is carried out directly in the combustion chamber in smoldering fuel mode. The gas released when wood burns enters the second chamber, where it mixes with oxygen and burns completely;
• the convection process occurs in special air ducts that pass through the firebox and have ends protruding outward. Cold air enters them from below the structure. Then it passes under the influence of natural draft through the combustion chamber and comes out to the top in a heated state.

The firebox door also has a special design. There is a convection chamber inside it, which also participates in heating the room.

Principle of operation

Main processes:

1. Pyrolysis. This function is performed directly behind the flow door inside the firebox.
2. Convection. It occurs inside the pipes installed in the structure, generating hot air. Moving along the pipes, he enters the room.

The principle of operation of the furnace is that the fuel in the combustion chamber smolders and does not burn. This happens because the oxygen content in the chamber is low. It allows you to avoid adding a second batch of solid fuel for a long period of time from 8 to 12 hours. Smoldering fuel produces the same amount of heat as during normal combustion. This is the main effect of the Engineer boiler.

What to make it from?

Several variants of furnace designs have been developed. This can be a simple barrel in which firewood is placed on top and the air flow is blocked by a gate valve. It will take more time to produce an analogue of industrial samples with a system of convection pipes and a separate gas combustion chamber.

The simplest and most uncomplicated scheme is a Butakov stove made from a gas cylinder. In this option, you can do without convection pipes or use 2-3 convection inserts.

We will examine in more detail the production of an analogue of an industrial design with a rectangular shape and a complete circuit of convection tubes and a system for long-term pyrolysis burning of wood. This design is the most productive and economical.

But during the manufacturing process it will be necessary to perform turning and drilling work. You can take the dimensions and bend angle from industrial sample pipes. The amount of material required for work depends on the chosen option and the dimensions of the furnace.

Gas generator furnaces

In RuNet, “gas generator” stoves usually mean small heating devices, such as Buleryan, Breneran or Professor Butakov.

There are many options for such devices; they are united by the presence of convection pipes, small sizes and the fact that they are more suitable for small houses with 1-2 rooms than for being built into a full-fledged system with a water jacket.

Strictly speaking, it’s a stretch to call them gas generators. The presence of a small second combustion chamber, where partial afterburning occurs, does not make them so. There is no catalyst, pressurized air supply, or high temperatures characteristic of pyrolysis. If you compare the technical characteristics of the models above and small convection ovens, the difference becomes obvious.