All the heat will stay in the house! Wood-burning boiler with a water circuit: characteristics, manufacture. Long-burning pyrolysis boilers with water circuit Automatic wood burning boiler with water circuit
Firewood is the most accessible and inexpensive type of fuel in our country. In addition, it is the most environmentally friendly fuel. To maintain the heat output, the manufacturer recommends heating the boiler with coarsely chopped dry logs of various types of wood.
Buy a wood-fired boiler in our store at the price of the Ermak-Stoker manufacturer. The sizes of a fire chamber favorably distinguish our heating devices from analogs. The most inexpensive and budgetary model of the wood-burning boiler AOTV 8-E is designed for logs 50 cm long at a flow rate of 5 kg / hour in long-burning mode. The depth of the furnace of the most productive unit PRO 32-E is 62 cm. Due to the volumetric furnace space of the boilers, a large amount of firewood is possible for autonomous operation in the long-burning mode.
In the conditions of an economical mode of long burning with a minimum air supply, logs of firewood smolder in the boiler furnace, and the emitted wood gases burn in the afterburner. The result of the operation of the device is saving on heating with the maximum duration of the device. Economy mode makes full use of wood fuel reserves, reduces home heating costs and minimizes maintenance.
The heating system is heated through a water jacket, the coolant is distributed over a large heating area around the furnace. For easy control of the water jacket temperature, all models are equipped with thermometers on the front wall of the case.
Useful options
To avoid temperature fluctuations after burning firewood, the manufacturer recommends buying a heating element with a thermostat for your boiler. This option will automate the heating process and maintain a constant comfortable temperature in the heating circuit. The threaded coupling for the heating element is located in the lower part of the body.
By purchasing a draft regulator for a wood-burning boiler, you can automate the operation of the damper that supplies air to the furnace to control the set temperature of the coolant.
A heating gas boiler is a device that, by means of the combustion of fuel (natural or liquefied gas), heats the coolant.
The device (design) of a gas boiler: burner, heat exchanger, thermally insulated housing, hydraulic unit, as well as safety and control devices. Such gas-fired boilers require a chimney to be connected to remove combustion products. The chimney can be either a conventional vertical or coaxial (“pipe in pipe”) for boilers with a closed combustion chamber. Many modern boilers are equipped with built-in pumps for forced circulation of water.
The principle of operation of a gas boiler- the heat carrier, passing through the heat exchanger, heats up and then circulates through the heating system, giving off the received thermal energy through radiators, underfloor heating, heated towel rails, and also providing water heating in an indirect heating boiler (if it is connected to a gas-fired boiler).
Heat exchanger - a metal container in which the coolant (water or antifreeze) is heated - can be made of steel, cast iron, copper, etc. The reliability and durability of a gas boiler depends on the quality of the heat exchanger in the first place. Cast iron heat exchangers are resistant to corrosion and have a long service life, but are sensitive to sudden temperature changes and are quite heavy. Steel containers can suffer from rust, so their internal surfaces are protected with various anti-corrosion coatings that prolong the “life” of the device. Steel heat exchangers are the most common in the manufacture of boilers. Corrosion is not terrible for copper heat exchangers, and due to the high heat transfer coefficient, low weight and dimensions, such heat exchangers are often used in wall-mounted boilers, but of the minuses, it should be noted that they are more expensive than steel ones.
In addition to the heat exchanger, an important part of gas boilers is a burner, which can be of various types: atmospheric or fan, single-stage or two-stage, with smooth modulation, double.
To control the gas boiler, automation is used with various settings and functions (for example, a weather-compensated control system), as well as devices for programming operation and remote control of the boiler.
The main technical characteristics of gas heating boilers are: power, number of heating circuits, type of fuel, type of combustion chamber, burner type, installation method, pump and expansion tank, boiler control automation.
To determine required power gas heating boiler for a private country house or apartment, a simple formula is used - 1 kW of boiler power for heating 10 m 2 of a well-insulated room with a ceiling height of up to 3 m. If heating is required for a basement, glazed winter garden, rooms with non-standard ceilings, etc. the gas boiler output must be increased. It is also necessary to increase the power (about 20-50%) when providing a gas boiler and hot water supply (especially if heating of water in the pool is necessary).
The peculiarity of calculating the power of gas boilers: the nominal gas pressure at which the boiler operates at 100% of the power declared by the manufacturer, for most boilers is from 13 to 20 mbar, and the actual pressure in gas networks in Russia can be 10 mbar, and sometimes even lower . Accordingly, a gas boiler often works only at 2/3 of its capacity, and this must be taken into account when calculating. In more detail with a table for calculating the power of a heating boiler, you can
Most gas boilers can switch from natural gas to LPG(ballooned propane). Many models switch to liquefied gas at the factory (check these characteristics of the model when purchasing), or nozzles (jets) are additionally supplied to the gas boiler to switch to bottled gas.
Pros and cons of gas boilers:
Boiler piping- These are devices for the full operation of the heating and water supply system. It includes: pumps, expansion tanks, filters (if necessary), manifolds, check and safety valves, air valves, valves, etc. You will also need to purchase radiators, connecting pipes and valves, thermostats, a boiler, etc. The issue of choosing a boiler is quite serious, so it is better to entrust the selection of equipment and its complete set to professionals.
What is the best boiler? The Russian market of gas boiler equipment has its own leaders in quality and reliability. The best manufacturers and brands of gas boilers are presented in the assortment:
"Premium" or "Lux"- the most reliable and durable, easy to manage, the kit is assembled as a "constructor", more expensive than the others. These manufacturers include German companies
Rising electricity and gas tariffs are forcing homeowners in the suburbs and rural areas to think about how practical it can be to heat a country house with wood. Heat engineers developing wood-burning boilers for heating a private house use the experience and knowledge gained not only in the construction of furnaces, but also in other areas of science (organic chemistry and physics of solid materials) to create effective equipment.
In past centuries, the question is: how to heat a country house? had only one answer - firewood. Large Russian stoves, compact stoves - Dutch, fireplaces (hearths reminiscent of the primitive past) - this was the heating of wooden houses in areas rich in forests.
The design of a classic solid fuel boiler
The originally popular cast iron body gradually gave way to a body welded from high quality steel. The advantage of cast iron was its high thermal inertia, which allowed it to slowly release heat into the surrounding space. Cast iron stoves have been very popular in the past three centuries. But cast iron has a drawback: in case of accidental rapid cooling (cold water that has fallen on the body), it cracks. It is very difficult to weld a cast-iron monolith, special equipment is required (in this case, the quality of welding is not guaranteed).
The lack of technologies for welding steel structures hindered the progress in the development of heat engineering. The advent of electric welding has changed the situation. Modern steel units are made of steel grades with high thermal conductivity. Welding allows you to create complex configurations of steel planes and pipes inside the boiler.
The design of a wood-fired boiler consists of the following elements:
- combustion chamber;
- grate;
- Ash chamber;
- Water circuit (heat exchanger).
The combustion chamber (or simply "furnace") occupies the central part of the boiler. The volumetric box, welded from thick steel plates (metal thickness of at least 4 mm), is hermetically sealed with a door made of the same material.
A grate is built into the bottom of the combustion chamber. This is a lattice of metal rods or a thick steel plate with cut parallel slots. Its purpose is to pass the waste of burnt fuel falling down. The air flow through the lower blower (hole with a damper), passing through the slots of the grate, supports the active combustion of the lower layer of wood.
The lower part of the body, where combustion wastes enter, is called the ash chamber (or "ash pan"). The wide (but low) door of the ash chamber is hermetically sealed to prevent unregulated air flow. The ash tray can be easily removed when cleaning from "heat production waste". Above the ash pan door there is a blower through which the air supply to the furnace is regulated.
Manufacturers pay special attention to the quality of the thermal insulation of the firebox. To reduce heat transfer outside the body, which is not directed to a useful action, plates of heat-insulating materials are inserted into the walls. Asbestos, ceramics, chamotte clay and mineral plate qualitatively reduce heat loss, which allows reducing the amount of fuel. An asbestos plate is also attached to the inner door of the firebox.
The locks on the doors of the combustion and ash chambers are designed taking into account possible wear. Locks with the effect of attraction do not allow the doors to open spontaneously.
Combination of a boiler with a water heating system
Integrated wood heating allows the use of one wood-fired boiler with a water circuit for heating a private house with several rooms, separated from each other by ceilings and internal walls. Modern boilers are designed specifically for heating water. The idea to make the boiler the main part of the water (or steam) heating system led to the creation of heat exchange systems. The system for transferring heat to water from burning fuel is called a "heat exchanger" or water circuit. A system of pipes and radiators connected to the water circuit distributes the heat of hot water evenly throughout all rooms.
The simplest type of heat exchanger is a water tank, under which there is a heat source. Water heating occurs only from the bottom side, which is not very efficient.
A more complex type of water circuit is called a "water jacket". The boiler furnace has double walls and a top, inside which water circulates as a heat carrier. The firebox is "dressed in a water jacket." The heat transfer efficiency of the structure is 20-25% higher than the previous one. The thickness of the gap between the walls of 3-5 cm allows the water to warm up quickly, and constant circulation does not allow it to stagnate in the lower part of the tank.
The water circuit, welded from thick steel pipes passing along the walls and the top of the chamber, curved by waves (“coils”), is no less effective than a “water jacket”. A pipe thickness of 5-6 cm is sufficient for slow water movement (in a thick pipe, the water velocity decreases in proportion to the ratio of the diameters of the heat exchanger pipes to the supply pipes).
In addition to good heat transfer, such a circuit has another important advantage: improved maintainability. In case of failure, replacing a pipe is much easier than welding a hole in a leaky wall or a cracked seam. And it is more difficult to fill the firebox from such a heat exchanger.
Monitoring and control systems
Solid fuel heating boilers for a private house are equipped with water temperature control systems in the water circuit. A fairly simple thermostat is connected to a lever to which a metal chain is attached. The second end of this chain is attached to the blower damper. When the optimum temperature is reached, the thermostat turns the lever and closes the damper. The air flow is reduced and the combustion process is suppressed until the water has cooled down to the control system's reset temperature. Mechanical air control is primitive but reliable.
More sophisticated control systems include electrified forced air supply and more accurate temperature sensors. A low-power electric fan (up to 35 W) built into the air duct system can supply an increased air flow not only from below.
The air supply from above creates an artificial effect of “active smoldering” in the flame, which allows you to burn the fuel much more thoroughly. Such boilers require connection to power supply systems and, in the absence of electricity, become more helpless than their mechanical "brothers". But fuel savings in the range of 10-15% suggests that such systems justify the installation of forced ventilation.
The boiler is not only an independent unit, but also part of the heating system of a private house. Therefore, the power of the equipment must correspond to the volume and circulation pattern of the coolant in the system. If the system is built taking into account the forced circulation of water and the rate of heating of the premises is controlled together with the process of burning fuel in the boiler, the efficiency of the system increases. Tank - a thermos will help keep the high temperature of the water when the boiler goes out.
The base for the equipment must be made of concrete, a sheet of metal with an area of at least 1 sq.m. is laid on the floor under the ash chamber. The distance to the walls of the room should be at least 30 cm, especially if they are wooden. It is best to make an isolated room in the basement or first floor of the house (mini-boiler room) with a supply of firewood.
Pros and cons of boilers
A relatively low price (compared to other types of boilers), high reliability and a long service life make wood-fired boilers with a water circuit popular in regions where the cost of firewood is low. But the efficiency of wood-burning boilers is considered the lowest of all types of boilers (70-80%) with the highest fuel consumption.
The frequency of loading firewood varies from 3 to 8 hours. The higher the quality of the boiler, the more efficient the heat exchange in the water circuit, the more accurate the control of the water temperature, the lower the cost of each received kilowatt of heat will be.
Wood-burning boilers manufactured by SAS, Sime, Aton, Wichlaczh, Galmet are well-deservedly popular. Companies also produce heating wood with a water circuit, which can be called the next stage in the development of heating equipment.
Owners of country houses where there is no gas main most often install a water heating boiler. Its main advantage lies in the use of inexpensive raw materials. To properly install the system, you need to understand the principle of operation, design features, installation and operation. Even before the acquisition, it is desirable to find out what advantages and disadvantages the unit has.
- combustion chamber;
- grate;
- ash pan;
- water circuit.
- high level of reliability;
- long service life;
- devices do not require frequent maintenance.
Show all
Design features
Boiler equipment with a water circuit is an improved model of a conventional standard boiler. The device consists of the following parts:
All single-circuit equipment is intended exclusively for home heating, but double-circuit water heating boilers are also used for heating, and to provide residents with hot water for household needs. But when purchasing such an installation, it is necessary to calculate in advance the required power, which will be required for both heating and water heating.
As for fuel loading, the process can be carried out both manually and automatically. In the second case, the device must be equipped with a special reservoir, which must be filled once a week. But such modern installations are much more expensive, so they are not so common.
Do-it-yourself water boiler pros, cons and good advice
It is also worth adding that such units need special fuel that has been processed.
There are devices equipped with electric heating elements that monitor the amount of raw materials in the furnace and, if necessary, add it. This function ensures continuous operation of the device.
Principle of operation
Heating of the house is carried out only after the water heating boiler starts to work, that is, during the period of fuel combustion. You can use wood or charcoal for kindling. One load provides about 3-4 hours of burning. For a longer period, it is better to purchase gas generating or solid fuel units.
The better the device, the more efficient the heat exchange processes and the more accurate the temperature control, the lower the cost per kilowatt of heat produced. Water heating boilers are manufactured in such a way that the coolant is heated as efficiently and quickly as possible.
In addition, the wall in the water circuit has the ability to accumulate thermal energy, which is formed during the combustion process. Thereby heating equipment quickly heats up the liquid and maintains the required temperature for a long time. It should be noted that such installations provide the same efficiency in systems with both natural circulation and forced circulation.
Cooper Wood and coal boiler with heating circuit
Advantages and disadvantages
In addition to the affordable price of heating equipment and the low cost of fuel, there are a number of other advantages. The main advantages include the following factors:
The advantages also include the fact that the ash that remains after the combustion of fuel, can be used as a fertilizer. There are also disadvantages. The fact is that a water boiler for heating a house does not have a high efficiency, and even with high fuel consumption, the figure does not rise above 80%. In addition, standard appliances need frequent loading of firewood, this will have to be done every 3-5 hours.
TITAN - economical stove boiler with a long-burning water jacket (with your own hands)
Water circuit
All pipes and radiators in the house that are connected to the water circuit ensure even distribution of heat throughout all rooms in the house. The heat exchanger can be an ordinary metal tank where the liquid is located. And already under it is located directly the source of heat. But this design is not very effective: the fact is that the water will only heat up in the lower part of the tank.
It is best to use a water circuit system when the container has double walls, between which a coolant is placed, through which hot water circulates. Due to the constant movement, the liquid does not stagnate, and a small space between the layers ensures the fastest heating of the entire area.
There is another effective manufacturing method that helps to achieve maximum efficiency. But for this you will need several steel pipes (diameter 5-6 cm), which must be welded together and give them a wave shape. Then place them along the walls and at the top of the firebox.
During operation, the coolant will slowly move through the pipes and thereby ensure high-quality heat transfer. In the event of a malfunction, this system is quite easy to fix.
Control block
All boiler plants are equipped with a special liquid temperature control system. The easiest option is to install a special thermostat on the structure. The principle of operation of such a device is that when the water is heated to the required temperature, the damper is lowered in the device, after which the air flow is noticeably reduced. And after the liquid begins to cool, the system works in the reverse order.
You can slightly modernize the control system and install the most accurate temperature sensors on the boiler, equip it with forced electrified air supply. As a result, ventilation will provide top feed, which will ensure complete combustion of the fuel. But it is worth noting that such a boiler installation will only function if there is an electrical network or battery.
If you plan to heat a small building, it is best to install the equipment directly in the house. But for the boiler room, choose some separate building or allocate a separate room. The heating pipe is always laid underground, moreover, in such a way that it is located below the freezing level of the ground. In addition, it needs to provide high-quality thermal insulation. In the room where the unit is installed, it is necessary to create a temperature regime within 10-15 degrees, and also equip a good ventilation system with natural draft.
Before installation, you should take care of the floor covering, the surface must be non-combustible, even and hard. It is best to make a thin concrete screed, in which case the heating boiler will stand firmly, steadily and reliably. In front of the device, it is necessary to lay a metal sheet with an area of \u200b\u200b1 sq. m. It is worth taking care of the location: the fact is that the unit should not be too close to the walls, you need to leave a distance of at least 50 centimeters.
Boubafonya with a water jacket - full test part 1
When performing installation work, all requirements and recommendations must be observed. Especially when assembling and installing a chimney. All joints must be carefully treated with a hermetic compound or smeared with clay. Water units are not as popular as electric or gas. Although in country cottages where there is no gas supply or there are frequent power outages, this option is optimal. At the same time, you can connect the system with your own hands, but on condition that fire safety precautions are observed.
Unlike natural gas, diesel or electricity, firewood is a shared resource. In regions with significant forest resources, the cost at which you can buy firewood is sometimes determined only by the complexity of their delivery to the consumer, and the price of a kilowatt of thermal energy obtained in the process of burning firewood is much less than the cost of the same kilowatt obtained from burning gas, fuel oil, diesel fuel, or by electric heating. And this state of affairs is typical for almost the entire territory of our country.
Under these conditions, the use of wood-burning boilers for heating becomes not only possible, but also beneficial in terms of cost reduction. One of the types of wood-fired boilers are long-burning boilers with a water circuit. The use of such boilers allows the most efficient distribution of heat throughout the house using a water heating system.
Cast iron wood-burning stoves, fireplaces and wood-burning boilers for heating water have been used by man for several hundred years. But the features of cast iron as a material did not allow the formation of effective water heating systems on the basis of such boilers. Cast iron products are quite difficult to give a complex shape, and the material itself is so sensitive to rapid temperature changes that it can suddenly crack, making the operation of cast iron heating boilers difficult and dangerous.
What other types of heating systems are used to heat a house?
you can learn about the advantages of the construction of a brick oven with a water circuit.
Here is a description of how heat pumps work.
And here is how to create the most efficient potbelly stove with your own hands:
Current state
With the development of steel welding technology, it became possible to manufacture wood-burning boilers and fireplaces from refractory steels with a complex internal structure. This opportunity allows us today to buy and install with our own hands at home boilers of complex shapes, with efficient internal water circuits, or a system of pipes - heat exchangers. The efficiency of such boiler systems has increased significantly, the service life has increased, and the unpretentiousness and reliability in operation have become an order of magnitude better.
At the same time, modern wood-burning heating fireplaces, boilers and steel stoves that can be bought on the market do not have complex electronic combustion control systems and ensure the operation of equipment. If, in some models, electronic control systems are present, then in the minimum amount necessary to ensure safe operation. Of course, this moment has a positive effect on the price of such heating boilers.
On the basis of a wood-fired boiler equipped with a water circuit, you can make a very high-quality heating system for a country house with your own hands.
Boiler design
- So, any boiler that you can buy consists of:
- combustion chamber
- grate
- chambers for collecting combustion products (ash chambers)
- heat exchanger (water circuit)
combustion chamber- this is the heart of a wood-burning boiler, or fireplace. It burns wood and releases heat. Volatile combustion products enter the chimney from the combustion chamber, leading them outside. The intake of air necessary for combustion into the combustion chamber is carried out through the lower blower (ashpit), or through adjustable shutters in the combustion door. Also, the combustion chamber is equipped with a door for loading fuel. It can be made both from the materials of the boiler body and from glass, as, for example, by the fireplace.
In the lower part of the combustion chamber there is a grate. Through it, the coals and ash remaining from the combustion of wood enter the chamber for collecting solid combustion products.
In the ash chamber a door is provided, which is used to clean it from unburned residues and to adjust the intensity of combustion by increasing or decreasing the flow of fresh air into the lower part of the combustion chamber. You can do this with your own hands and with the help of a special mechanical thermostat that regulates the flow of fresh air into the combustion chamber, depending on the achievement of the specified temperature of the liquid in the water circuit.
heat exchanger can serve as a water circuit, which is, as it were, the second body of the combustion chamber. In this embodiment, the liquid heated by the boiler circulates around the firebox, isolating it from the outer casing of the wood-burning boiler. Such a heat exchanger is very effective from the point of view of the rapid heating of the liquid and the reduction of untargeted heat losses, but if it is damaged for any reason, the repair of this circuit can be very difficult.
Also, a system of pipes passing in the internal space of the boiler in the places of the most efficient heat transfer by the combustion chamber can be used as a heat exchanger. Such a system is more convenient to repair than a continuous water jacket system, because each pipe, or the entire pipe system, can be easily pulled out and replaced with a serviceable one.
Boiler interior
The combustion chamber, a system of heat exchangers, is isolated from the outer casing with non-combustible materials with a low thermal conductivity. It can be asbestos, mineral wool, chamotte clay, ceramic filler, etc. materials.
This insulation serves two purposes:
- firstly, by reducing the heat transfer of the boiler body to the surrounding space, the efficiency of the boiler itself increases significantly, in terms of the efficiency of heating the working fluid;
- secondly, the safety of operation of the boiler itself increases when it is installed in a room with fire-prone materials of the structure of the house.
Heating a modern house with a boiler
Both with his own hands and with the help of a contractor, today every homeowner has the opportunity to buy and organize a heating system for a country house based on a wood-burning boiler. At the same time, a boiler, or a fireplace, with a water circuit, located in one of the premises of the house, or even in a separate building of the boiler room, will effectively heat the rooms of the house isolated from each other by walls and ceilings. A boiler designed specifically for heating water is able to reliably cope with heating tasks over many heating seasons.
In this case, the system can be organized both with forced pumping of the coolant, and with its natural circulation, which does not depend on an external power source.
Systems that do not depend on an external power supply, at first glance, seem more attractive, primarily due to the complete autonomy of use. But with this type of system layout, it is very difficult to achieve uniform heating of all rooms. Almost always, in such systems, in some rooms it will be excessively hot, while in others there will not be enough heat.
For a system with forced circulation of the coolant, of course, an external source of energy is needed to operate the pump that pumps the coolant, but the energy requirement of such a pump is very small, and, in the event of an external power failure, can be easily compensated by using backup power sources. In any case, emergency generators and backup power sources are necessary in every house in case it is disconnected from the mains, and it will not be difficult to power the circulation pump from them in an emergency. On the other hand, the uniform circulation of the coolant will allow maintaining a comfortable temperature in all areas of the house, which, of course, significantly affects the convenience and comfort of living in it.
One of the options for water boilers for heating a house is the so-called boilers. prolonged burning.
These can be pellet boilers that use not ordinary wood as fuel, but specially prepared wood pellets, which are products of sublimation of waste products from industries that use wood in their cycle.
In addition, long-burning boilers are also created for ordinary firewood. In this case, a complex system of internal chimneys makes it difficult and suppresses the rapid combustion process, increasing the intervals between loading the next batch of firewood into the furnace and allowing you to increase the efficiency of the boiler due to a more rational use of the energy released during the combustion of firewood.
Before you buy a boiler for your home, some preparation of the premises is required. The heavy weight of the boiler allows installation only on a specially prepared base. A special concrete platform can serve as such a base. Under the boiler itself and in front of it, it is advisable to lay a sheet of thick metal in order to exclude the possibility of spilling smoldering or burning fuel onto objects that can ignite, located below the boiler. The walls and ceiling of the boiler room located near the boiler must be reliably insulated from the thermal effects from the boiler. The room must be provided with a reliable exhaust system and a fire alarm system in case of smoke in the room.
The chimney system for your future boiler must be properly designed and executed. Proper insulation of chimney pipes from the wooden structures of the room is very important. The temperature of the combustion products that enter the chimney during intense combustion reaches many hundreds of degrees, and improper thermal insulation of the chimney pipes can lead to a fire.
A properly organized chimney is very important for the efficiency of the boiler itself. If the end of the chimney pipe is located too low, insufficient draft may form in the boiler furnace, and the combustion process will differ from that which was structurally laid down by the boiler manufacturer. The end of the chimney pipe must be located above 50 centimeters above the level of the roof ridge. In this case, under any weather conditions, the correct draft in the chimney will be ensured.
At the bottom of the chimney, it is imperative to provide and make a collector for condensate, which forms inside the chimney pipes when they cool. If this is not done, excess moisture will enter the boiler and cause corrosion, which, of course, will reduce its service life.In general, there is nothing complicated or special in the heating system of a house based on a water boiler. It can be easily designed and assembled by hand. In this case, it is possible, without significant costs (since the installation price is low), to embed the boiler into an existing heating system, using it as a spare, or even as the main source of heat in the house.
Control and security
Of course, every heating system needs controls and automation. This is especially important if you make this system with your own hands and it is located inside the house, where any malfunction can cause a fire that can lead to loss of property and even human casualties.
Complex multi-level combustion control systems that can ensure maximum safety of a boiler or fireplace exist, but the equipment on which they are used is usually expensive and not everyone can afford to buy it. But even simple and inexpensive wood-burning boilers have protection and control systems.
The simplest system, which has already been mentioned above, consists of a simple thermostat that measures the temperature of the coolant in the working circuit of the boiler and regulates, through a mechanical transmission, the damper responsible for the process of accessing fresh air to the furnace. When the temperature of the working fluid reaches the set value, the draft of fresh air is reduced and the combustion process slows down. When the temperature drops below a predetermined limit, the damper opens slightly, and the burning of firewood in the furnace becomes more intense. Such a system makes the operation of the boiler not only safer, by adjusting the temperature of the coolant and eliminating the possibility of its boiling in the heating circuit, but also allows for more efficient use of fuel, reducing its unnecessary consumption for excessive heating of the working fluid.
In some boilers, with a more sophisticated control system, the combustion process is regulated by a supply fan that blows air into the furnace and smoothly regulates the combustion process in accordance with the specified parameters. Such an automation system not only makes the combustion process smoother and safer, and the heating of the house more uniform, but also makes it possible to load firewood into the boiler furnace less often.
Features of the operation of such boilers
- low price (every homeowner can afford)
- long service life
- reliability (with proper operation there is simply nothing to break)
- availability and low cost of fuel
- do-it-yourself setup and maintenance (does not require high qualifications)
- relatively low efficiency (compared to gas or diesel fuel boilers)
As you can see, such boilers have both their pluses and minuses. However, the fact that they are ubiquitous in our country suggests that the use of such equipment for heating a house in winter is very effective.
Read also...
- Education of the USSR: prerequisites, stages, significance When the USSR was created
- Education of the USSR: briefly about everything What led to the formation of the USSR
- Socialist-Revolutionary Party: who are they? Their goals and program. Political parties at the beginning of the 20th century Socialist-Revolutionaries party program table briefly
- Vitaprost rectal suppositories: how to use the drug correctly You can take Vitaprost without a doctor's prescription
