The best models of solid fuel boilers. Overview of the rating of long-burning heating equipment. Solid fuel boiler of long burning

Living outside the city is the dream of every city dweller. Peace and quiet, the absence of a large number of cars and people, as well as autonomy in providing communication systems attract many. But it should be noted that indeed quality conditions residence in country house can only be ensured by choosing the right equipment for the heating system.

The basis of any heating system is the boiler - it is the choice of such a unit that special attention should be paid. The choice of equipment on the domestic market is simply amazing, heating units with a variety of operating principles are presented. At the same time, against the background of all equipment, long-burning solid fuel heating boilers with increased productivity, high heat transfer and low cost stand out.

Heat sources of long-term combustion: features, design

Heating boilers for long burning on wood are an absolutely innovative type of heating equipment, reliable and practical devices, the installation of which will ensure optimal conditions to live in the house. Using affordable fuel, the cost of which is much lower than the same gas, you can significantly save on heating, achieve maintenance optimal temperature in a house of any size.

Modern units that run on solid fuels and use the principle of long burning work quite simply - the same firewood, coal or peat do not burn, but smolder in the furnace. This process is maximally slowed down, since a limited amount of oxygen enters the combustion chamber.

In addition, when compared with conventional equipment, in specialized boilers, fuel smolders in much larger volumes, which makes it possible to obtain gas with high heat rates.

It should be noted that the gas obtained as a result of smoldering fuel enters the combustion chamber of the boiler under high pressure where it ignites. The process of combustion of gas occurs under the influence of oxygen. Also, various unburned residues, such as soot or heavy compounds, burn out in the combustion chamber.

Technical characteristics of heat sources

Currently solid fuel boilers long burning on coal, wood, peat is not a problem to acquire. A wide range of all kinds of equipment is presented on the domestic market, differing from each other in performance indicators, outlet temperature and power. In addition, the overall dimensions and weight of the units can be different.

Advice. Solid fuel heating units that run on coal emit a fairly large amount of smoke containing ash and soot. As a consequence, if the choice fell on such devices, then it is important to ensure efficient work ventilation systems.

It should be noted that today for all types of furnace units there is a certain average instruction, indicators and performance characteristics:

The working pressure of all equipment is about 1 atm;

The minimum temperature of the water that enters the boiler is 5C;
The temperature of the coolant at the outlet of the boiler is 80C;
The average power of heat sources is 100 kW (there are models with large operating power parameters);
The duration of work from loading one batch of solid fuel into the furnace is at least 11 hours;
Efficiency - not less than 89 percent. Often, for all boilers using the smoldering process, this coefficient is the same, but much also depends on the humidity and type of fuel;
The temperature of the exhaust gases that go "into the pipe" is not more than 270C.

Read here.

The main types of long-burning boilers

Heating boilers for long-term combustion on wood, coal or peat can be divided into several categories according to the method of obtaining heat:

classic units. Their principle of operation boils down to the fact that the heat released during the combustion of fuel heats the antifreeze or other coolant of the building's heating system;
pyrolysis equipment. Absolutely innovative technology is used. The main source of heat is firewood, which, under the influence of high smoldering temperatures (200-800C), decomposes into charcoal and gas. The released gas mixes with oxygen and burns, thereby releasing the heat needed to heat the coolant.

The maximum performance of pyrolysis boilers is achieved when they operate on dry wood. Also, in this case, it is possible to provide the highest efficiency (fuel burns completely), good performance heat transfer.

The main advantages of long burning boilers

Modern powerful and reliable solid fuel long-burning heating boilers are equipment that has a lot of advantages. Among the main advantages of heat sources in this category are:

High performance, good heat transfer;
Beautiful appearance, a variety of models. Our website contains a number of photo and video devices that can be safely installed in the interior various premises, including a residential building;
Simple adjustment of the combustion process. Each owner of such long-burning equipment, depending on the situation, can regulate the heating temperature and other parameters with his own hands;
Ability to automate the process. Many boilers are equipped with special control panels and other devices, thanks to which you can both regulate the operation of equipment and signal the occurrence of emergencies;

Low price of fuel used in machinery. The same firewood, coal or peat at the moment are much cheaper than gas that is familiar to everyone. Yes, and centralized connection to main gas pipeline absent - the boilers operate completely autonomously.

Outcome

Heat generator using the principle of long burning - the best choice for a private house or some other object. Such equipment has a very low cost, unique efficiency indicators, they are economical and can work without failures for a long time.

The ever-increasing tariffs for gas and electricity are forcing residents country houses install autonomous solid fuel boilers for heating a private house. Such devices generate thermal energy by burning wood, coal or. It is also worth noting that solid fuel units will become optimal solution for the arrangement of the heating system, in those houses where it is technically impossible to install gas equipment.

The market for solid fuel boilers for long burning is rich in various models devices made by manufacturers different countries. To do right choice and purchase a heating device that is ideal for your home, you should familiarize yourself with all existing types solid fuel boilers.

Types of solid fuel boilers for a private house

The entire model range of this unit can be divided into the following types:

Heating appliances in which solid fuel is fed into the furnace automatically. These are the so-called pellet boilers. Their work is based on the use of granulated fuel.
Heating appliances that require manual loading of solid fuel. Their classification is presented as follows:

classic type boiler;
pyrolysis boilers with top combustion;
long-burning heating device.

The most important parameter that you should pay attention to when buying a heating device is the combustion time of solid fuel at a single load, as well as the type of fuel that determines the maximum efficiency of the boiler.

When choosing a long-burning solid fuel boiler for your home or summer cottage, it is very important to pay attention to the following parameters:

number of circuits. A double-circuit solid fuel boiler of long burning can not only heat the house well, but also ensure uninterrupted hot water;
it's good if the boiler has hob, so the problem of cooking is solved;
always specify the power of the device and its efficiency. As a rule, solid fuel heating boilers with a power of up to 12 kW can warm up a house well, the area of \u200b\u200bwhich exceeds 100m2;
before making a purchase, consider whether the weight and dimensions of the device correspond to those parameters that provide fairly easy transportation and quick installation;
select a solid fuel heating boiler based on the possibility of acquiring the required fuel;
fuel loading option and the general arrangement of the heating unit.

Attention ! Remember, solid fuel heating appliances are produced only on the floor type, so wall mounting is not possible, under any circumstances.

Classic solid fuel boilers

Today, this is the most popular type of heating device. As a rule, such a unit is made of heat-resistant steel or cast iron. Heat is generated during the combustion process. The working process of the boiler is supported by burning wood, peat or heating pellets. Classic solid fuel heating appliances are traditionally used both for space heating and for providing hot water. Since firewood burns very quickly, they are most often heated with coal. The built-in temperature sensor allows you to maintain the desired degree inside the furnace and adjust the air damper. If the temperature changes its operating value, the damper opens slightly and vice versa.

As practice shows, with one load of fuel, this type of heating device can work effectively for up to six hours. This is a completely autonomous device, its operation does not depend on the presence of gas or electricity in the network.

Modern models solid fuel boilers are equipped with built-in temperature sensors, an air blower, as well as a control panel. All these elements make the management process simple and convenient.

Attention ! You should always remember that coal slowly flares up, but after gaining the desired degree, it keeps it at this level for a very long time.

Firewood burns very quickly, so you should not fill the entire space of the firebox with them at once. This can lead to a rapid but short-term heat release and overheating of the boiler, which is very dangerous.

Pyrolysis solid fuel boilers

The pyrolysis boiler is an example of new technologies and developments. This type of heating device is used in practice, both for space heating and for heating water. It includes two combustion chambers. In the first compartment, solid fuel burns with an artificially created oxygen deficiency. During combustion, special volatile substances are released, which undergo a combustion procedure in the second chamber.

As a rule, the operation of pyrolysis boilers is provided by firewood, fuel briquettes, pellets, coal and even coke. It is important to consider the quality of solid fuel. It must be dry, since if steam enters the second chamber, a situation of interruption of combustion may occur.

Some models have built-in thermostatic air regulators and devices that prevent the solid fuel boiler from boiling for a long time. In a situation where the heating device boils, thermostatic valve will release water by opening the damper, and as a result, the internal temperature of the boiler will decrease.

Advice ! A pyrolysis heating boiler for long-burning solid fuel can be installed in almost any room that has constant inflow air. The chimney is mounted both inside and outside the building.

Pellet solid fuel boilers

This model of heating devices is very popular for residents of Europe. They are usually used for home heating, and for heating running water. Such solid fuel boilers of long burning are heated with pellets (pressed chips, sawdust).

The main advantages of using this type of heater is complete autonomy. The combustion temperature is automatically maintained by sensors, and all that is required of a person is to load the fuel boiler in time necessary material. Some models of such boilers have a built-in auger, which will independently send pellets to the furnace. The disadvantage of such a boiler is that other types of fuel other than pellets cannot be used.

Attention ! The use of unsuitable, low-quality solid fuels leads to an increased consumption of materials and can even cause the heating device to fail.

Long burning boilers

This version of home heating devices can work effectively on coke, coal, wood, wood chips and even sawdust. Those models of units that are designed exclusively for working on wood differ significantly in the air supply system and the materials used to make the combustion chamber.

Practical experiments have shown that if 45 kg of fuel is loaded into the furnace once, the burning time will be an average of thirty-six hours. If the outside air temperature began to rise, then there is no need to heat the boiler to the maximum. To do this, simply reduce the power of the boiler and the rate of combustion of the fuel.

The long-burning heating device is a new generation boiler. It has good tightness. Solid fuel in such models burns, starting from the top to the bottom. This ensures the maximum duration of burning with one load. The fuel does not begin to burn immediately, but gradually, by 1-2 cm of the load. The air that enters the furnace is heated, and then passes into the combustion zone with the help of a heat exchanger.

The air distributor is always located at the combustion level of the solid fuel.

Selection criteria for solid fuel boilers

After reviewing the types of solid fuel boilers, it will not be superfluous to find out what criteria you should pay close attention to when making a purchase.

Type of fuel

The very first thing you need to decide is what fuel the heating device will work on. It is better to leave your choice on a fuel that is easy to buy and take home. If there is a possibility of harvesting firewood, then the best option would be a solid fuel boiler that burns wood. For owners of houses in the area where trees do not grow, it is best to purchase a unit that runs on pellets. Appliances that generate heat from coal are suitable for those who have the opportunity to order and purchase high-quality coal. Sawdust-fired solid fuel boilers are usually installed in those houses that are located near wood-processing facilities.

Heating boiler power

To correctly determine the optimal power for heating your home, you need to carry out not very complex mathematical calculations. The most important thing is to calculate the indicator of the volume of the room that needs to be drunk. The result obtained will be the starting point for choosing the future heating boiler.

Advice ! Always take into account some margin of power so that in the event of an abnormal low temperatures in the house could be supported comfortable temperature air.

Boiler weight

When choosing a heater for long-term combustion, its mass will become an important indicator, especially if wall mounting is planned. According to state standards, wall mounting is only permissible if the volume of heating boilers does not exceed 100 liters.

Load chamber volume

This is an indicator of the ratio of the volume of solid fuel used and the power of the heating device. The more fuel can be loaded into the chamber, the less often it will be necessary to replenish the supply of solid fuel. For example: the indicator of the volume of the loading chamber for steel heaters should be no more than 2.5 l / kW, this indicator for cast-iron boilers is 1.4 l / kW. The calculated unit of the volume of the loading chamber helps to roughly assess the capabilities of the units. After all, you are unlikely to be able to load the boiler 100%, and knowing exactly how much firewood can be loaded will be very useful for planning solid fuel reserves.

Manufacturers of solid fuel heating boilers

When going shopping, it is better to familiarize yourself with the main manufacturers of solid fuel boilers in advance so as not to get confused by the abundance of brands and brands on the market.

Consider in more detail the best solid fuel boilers for home heating:

The Stropuva brand has established itself as a manufacturer of reliable and high-quality long-burning heating appliances. The products of this company are characterized by high efficiency, and long term operation.
Solid fuel boiler for long burning Russian production from the company "Ochag" produces heating boilers, with built-in heat exchangers. Products of this brand are distinguished by high performance and quality.
The Polish company Wichlacz has established itself in the market as a reliable manufacturer of heating units, the principle of operation of which is based on layer-by-layer combustion of fuel.

The ever-increasing cost of gas heating equipment leads to the fact that solid fuel boilers are gaining more and more popularity. And the lack of gas in small towns does not leave consumers any alternative at all. Of course, the easiest way is to lay down a classic brick oven in the house and heat it daily. But if you do not want to work as a stoker all winter, our article is for you. For those who have decided to make their lives much easier, and even save on heating at home, we have compiled a rating of the best solid fuel boilers in 2018.

However, before moving on to a discussion of specific models, let's talk a little about how to choose a solid fuel boiler, what indicators you should pay attention to.

Technical parameters of solid fuel boilers

So, what should you pay attention to if you decide to choose the best solid fuel boiler:

Type of fuel. different models may consume one or more types of fuel. Firewood, coal, peat briquettes, sawdust, pellets, straw or recycled waste are suitable for use.
Power. It must be calculated in such a way that it is enough to heat the entire area of \u200b\u200bthe house and auxiliary premises.
Combustion chamber volume. This is one of the main indicators affecting the performance of the unit, the frequency of fuel loads.
Automation. The presence of such a mechanism allows you to free the owners from constant monitoring of the boiler.
Safety. The main elements necessary in any boiler are an alarm and an auto-shutdown function in case of a malfunction.
The need for access to electricity. Some models of heaters are simply not able to work without access to electricity. But most of the boilers can still carry out heating completely autonomously.
Useful coefficient. this indicator is calculated as the ratio between the actual power of the device and the heat capacity of the fuel used. The higher the efficiency, the less fuel is required to generate one unit of heat.
Operating time on one load. The inability to control the process makes the burning period of the fuel very short. You are unlikely to like a boiler that needs fuel every 4-5 hours. Modern models can work on one load for several days.
Ease of maintenance. Even the most wonderful boiler needs to be cleaned of soot and ash, purged and loaded with a new portion of fuel. The simpler all these processes are arranged, the more satisfied the owner will be.
Price. Boilers for heating a house are not the equipment that is worth saving on. In this case, you should not choose a heater, focusing only on low price. The technical characteristics of cheap boilers are often far from ideal.

Only by comprehensively approaching the study of all the main parameters, we can choose for ourselves the best long-burning solid fuel boiler in 2018.

If you do not want to be puzzled by the issue of fuel procurement and plan to drown "what is", you should pay attention to the "omnivorous" models. Such heaters can work both on wood and on coal. Moreover, many of them are able to work on solid household waste. They are wonderful and useful to burn anything. In this case, in addition to heating the premises, the problem of household waste disposal is well solved.

Bosch Solid 2000 B K 16-1

Pretty easy to maintain and "omnivorous" model. High-quality steel body and cast-iron grates ensure reliability and durability. If the area of your home is not more than 150-160 square meters. meters, Bosch Solid 2000 B K 16-1 is what you need. In the middle price category, such a boiler can be considered one of the best offers in 2017-2018.

Advantages:

a large selection of fuels;
the ability to clean the boiler through the top;
reliability of work;
auto power control;
interesting design;
the ability to use in tandem with a gas boiler as a reserve;
affordable price, no more than 750 US dollars.

Flaws:

special - not found.

Protherm Beaver 20 DLO

Here is another fairly high-quality model that can perfectly heat a room with an area of \u200b\u200bno more than 170 square meters. "Proterm Bober" is able to work both on coal of a medium-sized fraction and on firewood.

high work efficiency;
profitability;
high efficiency(up to 90%);
cast iron firebox and heat exchanger;
the ability to use the boiler as auxiliary equipment;
the ability to work on one load up to 12 hours;
the cost is about $800.

wood moisture should not exceed 20%;
unusual traction adjustment;
not too comfortable cleaning, you need to adapt;
weight is greater than that of similar models.

Buderus Logano G221-25

A very interesting model, the power of which is sufficient for heating 200 square meters. meters of area. Cast iron housing provides exceptional reliability and high fire safety.

Advantages:

increased resistance to corrosion;
increased size of the furnace;
ease of operation;
Efficiency is about 75–77%;
minimum warm-up time;
capacious receiving bunker.

Flaws:

rather high cost, approximately 1300 USD;
considerable weight.

Bourgeois-K Modern-24

This modern and stylish heater is able to work without refueling for several hours (depending on the type of fuel). And to get heat, you can use anything. The fuel in this case can be coal, firewood, wood waste and fuel briquettes. At the same time, depending on the type of fuel used, an efficiency of more than 90% can be achieved.

heated area up to 250 m 2 ;
compact dimensions;
the ability to use firewood with a moisture content of up to 50%;
Efficiency up to 92%;
economical use of fuel;
complete independence from electricity;
consumption of less than 40 kg of firewood per day.

the need to install a pipe of sufficient height (at least 8 m) for high-quality removal of combustion products;
grates quickly burn out and require replacement;
in some models, the gate clogs quickly;
the price is approximately 1,300 US dollars.

Alpine Air Solid Plus 4

If you want to enter the boiler room as little as possible, and the room where the fuel equipment is installed is not well insulated, this boiler is exactly what you need. Despite the not too sophisticated design, this unit is able to work on almost any type of solid fuel and quite effectively heat a room up to 200 m2.

Advantages:

affordable price, about $800;
reliable and unpretentious;
high efficiency;
excellent thermal insulation.

Flaws:

very original design.

Those who are used to getting the best possible result in any business should pay attention to such heating devices. Our review contains the best solid fuel boilers of 2017–2018. In our choice, we focused on specifications devices, as well as feedback from consumers who have already tried these models.

The fundamental difference between such boilers and all other heating devices is that they have not one combustion chamber, but two. In the first, firewood is burned directly, and in the second, wood gases obtained during the pyrolysis process are burned. Roughly speaking, you heat with firewood, and you heat yourself up due to the heat received as a result of gas combustion. Almost the only disadvantage of such boilers is the high quality requirements for the burned wood. It should be as dry as possible.

Dakon KP Pyro

Pyrolysis boilers of the DakonPiro trademark have a fairly wide range of models, with a capacity of 18 to 38 kW. Depending on this parameter, the area of the heated room can vary from 200 to 360 square meters. meters, respectively.

firebox lined with heat-resistant ceramics;
Efficiency not less than 85%;
enlarged firebox;
the presence of a ceramic pyrolysis nozzle;
intuitive and very simple adjustment process;
interesting design solution;
the need to clean the boiler every 4-7 days;
flue gas containment system when opening the firebox door.

the moisture content of the fuel used is not more than 18–20%;
not too attractive price, from $1,500 depending on power.

Bourgeois K TA-20

While appreciating the irony of the creators of this brand, one can still disagree with them. This wonderful model has gone so far from the notorious "potbelly stove" that it's not worth talking about. The savings of this boiler compared to others can be very significant. The consumer will also be pleased with the price, one and a half to two times less compared to Western counterparts of the same capacity.

Advantages:

very high energy efficiency;
energy independence;
the possibility of using a variety of fuels;
reliability;
attractive price, about 900 USD. e.;
automatic thermoregulation system.

Flaws:

heavy.

Atmos DC

Boilers of this series also work exclusively on wood. Almost all pyrolysis boilers of this series are equipped with a special heat exchanger protected from overheating. Available exhaust fan, providing air circulation in the combustion chambers. A wide range of models allows you to accurately select the boiler you need in terms of power.

economy;
impressive loading chamber;
environmental friendliness;
Efficiency up to 87%;
the presence of a cooling circuit (protection against overheating);
complete with exhaust fan;
capacious ash pan (cleaning once a week);
automatic protective shutdown after burning out the fuel;
compact dimensions;
light weight;
reliability;
ease of operation;
adequate price (the most low-power model costs about 800 USD).

not detected.

Viessmann Vitiligno 100s

Advantages:

quite high efficiency, up to 90%;
capacious loading chamber, where firewood up to 50 cm long is placed;
significant period of autonomous combustion;
environmental friendliness.

Flaws:

dependence on the source of electricity for the operation of the smoke exhauster;
high requirements for fuel quality;
unreasonably high price, about 3,200 US dollars.

Geyser PK-30

The price of this model is much more attractive and is just over $1,000. In addition, it is able to qualitatively heat a house up to 300 square meters. meters.

economical;
simple and clear control;
ease of maintenance;
the ability to work without electricity in the house;

requires foundation equipment during installation;
pretty heavy.

If you still do not know which solid fuel boiler is best to purchase for heating your home, we strongly advise you to take a closer look at pellet boilers. heating appliances. Installing such a unit will allow you not to look into the boiler room at all for several days. There can be only two difficulties here:

you need to have enough space for storing pellets;
similar fuel material is not available in every region.

If you do not foresee difficulties with the acquisition and storage of pellets, such a boiler will definitely allow you to appear in the furnace as little as possible.

Zota Pellet 25

One of the most popular and expensive devices is the ZotaPellet boiler. This ultra-modern unit is equipped with a liquid crystal display and is able to control as many as five pumps simultaneously. Literally everything can be connected here - from a warm floor to a centralized heating system. A power of 25 kW is enough for high-quality heating of a house with an area of at least 250 m 2.

Efficiency over 90%;
electric ignition;
high energy efficiency;
reliable automation;
high-quality thermal insulation;
multifunctionality.

a considerable cost, about 3300 USD. e.

Biomaster BM-15

And here is another high-quality pellet boiler. This model is good for heating a large area house. Depending on the configuration, it can have a hopper for 200 or 400 liters. Equipped with a system automatic removal ash.

Advantages:

absolutely undemanding to the quality of the pellets used;
good efficiency;
profitability;
ease of installation and comfort of use.

Flaws:

cost from $2,800;
has a lot of weight;
requires a foundation.

Teplodar Kupper OK 30

And this unit is generally “omnivorous”. Teplodar Cooper, although it has much fewer "bells and whistles", is absolutely not picky about the quality and type of fuel. Compact dimensions allow you to comfortably place fuel equipment on an area of about 5 square meters. meters.

Efficiency over 89%;
high-quality thermal insulation;
compact dimensions;
variety of fuel;
automatic fuel supply;
automatic adjustment of t˚C mode;
ease of operation;
low price, from $600.

difficult to install on your own, requires the involvement of a specialist.

Pelletron

There are only 2 modifications of the boilers of this company: for 40 and 20 kW, which allows you to perfectly heat rooms up to 700 or 400 m 2, respectively. The cost of pellet boilers "Pelletron" can reach 1,500 conventional units, depending on the capacity.

Advantages:

Efficiency up to 92%;
compact dimensions;
light weight;
equipped with a smoke exhaust system, which eliminates the need for chimney equipment;
has automatic protection against fire or overheating.

Flaws:

has excessive requirements for the quality and size of pellets;
if installed and used incorrectly, fire can be transferred to the bunker.

Kiturami KRP 20-A

An interesting model of a pellet boiler is capable of providing not only space heating, but also additional provision of a home with hot water.

autodosing of fuel;
the presence of a thermostat;
the possibility of heating water;
ease and accessibility of cleaning the ash pan;
ease of installation;
capacious fuel bunker;
auto protection against freezing or overheating.

price, about 3,500 US dollars.

And of course, we cannot ignore solid fuel boilers for long burning. User reviews suggest that such equipment can burn at one gas station for up to 130 hours. If we consider all such equipment as a whole, only one significant drawback can be noted: long-burning boilers cannot be refueled. That is, throwing firewood / coal during the combustion process will not work. It is necessary to wait for the fuel to burn out completely and only then load the boiler again. We present to you a few best models 2017–2018.

Stropuva S 40

The leader among solid fuel boilers for long burning, of course, are the models of the Lithuanian brand Stropuva. This brand is able to provide excellent heating of a room up to 400 m 2 for 60–70 hours. And all this at one gas station. Anything can serve as fuel in this case. It depends only on the duration of burning.

surprisingly high efficiency;
market leader;
power and stable operation for several days;
stylish design.

quite difficult to perform the correct strapping;
inability to "throw" fuel.
high price, from $2,000.

Candle S-18kW

This solid fuel boiler is able to work on one bookmark of firewood for at least 7–8 hours. And when correct styling working time can reach 33-34 hours. The principle here is simple: the denser the fuel is packed, the longer the boiler will burn.

Advantages:

economy and energy independence;
compactness;
quite high efficiency;
power.

Flaws:

the need to equip a boiler room (separate room) for installation;
fast caking of ash;
high requirements for fuel dryness;
a considerable cost, about $ 1,500.

Buderus Logano G221-40

Excellent model with cast iron heat exchanger. Able to heat a room with an area of about 400 square meters. meters. It is quite "omnivorous", coal can be used as fuel, different types wood, peat, coke, fuel briquettes.

the ability to use both autonomously and in tandem with boilers of other modifications (diesel, gas);
interesting design;
power and energy independence.

you need coal of a certain fraction, a larger one can get stuck;
the price is about 1,800 US dollars.

Idmar UKS

A universal boiler capable of operating on absolutely any type of solid fuel, including any combustible waste. A wide range of models allows you to choose heating equipment that ideally matches the required power. Ideal for heating a cottage or a small country house. For example, the Idmar UKS-17 model does an excellent job of heating an area up to 170 sq. meters.

Advantages:

heat exchanger alloyed with molybdenum, increased protection against deformation and corrosion;
water-cooled grates;
the presence of a three-channel gas duct;
simplicity and ease of maintenance;
insulation of the outer casing with a thick layer of basalt wool significantly reduces heat loss;
heat exchanger "water shelves";
affordable price, from $400.

Flaws:

the period of continuous burning is not more than 24 hours (on coal).

WICHLACZ GK-1

A qualitative analogue of the previous brand, which was appreciated by many consumers. At one gas station it is able to work for at least two days, while you can literally drown it with anything.

"wet" grates;
Efficiency up to 89%;
the presence of a rotary chimney greatly facilitates installation.

duration of work (continuous) no more than a day.

This is how our rating of the best solid fuel boilers of 2018 turned out. As you may have noticed, we did not try to place the models on the "pedestal of honor" and did not award any places. You can do this yourself. Other models can also be added to consideration. You decide.

Warmth in the house and savings in fuel used are two indicators that owners of private houses want to get when it comes to the heating system. And if the heating unit in the house runs on wood or coal, then perfect option for this - the so-called solid fuel boilers of long burning. The name already speaks for itself.

Everyone knows that conventional wood heating boilers have a lot of advantages. But they also have disadvantages. And one of them is the rapid combustion of solid fuel in the furnace. That is, the owner of a private house has to periodically lay down firewood or coal, before which he cleans the ash pan. The frequency depends on the type of fuel used. For example, coal burns longer than firewood three times. But it is not mined in all regions, so most often you have to deal with wood-burning boilers.

Principle of operation

The principle of operation of long-burning boilers is based on the pyrolysis process. This is the decomposition of any substances under the influence of temperature with a minimum supply of oxygen. In fact, the same firewood or coal in the combustion chamber does not burn, but smolder. In this case, the so-called pyrolysis gas is released, which burns in an additional furnace, where a certain amount of oxygen is supplied.

At the beginning of operation, oxygen is intensively supplied to the first combustion chamber, where fuel is loaded. It is necessary to warm up the entire system well. After that, the feed is reduced to a minimum, and the pyrolysis process begins to work in the first furnace.

Any long-burning boiler consists of two chambers. Firewood smolders in the first, pyrolysis gas is burned in the second. At the same time, both furnaces emit thermal energy, so the efficiency of this type of equipment is on average 85%.

This indicator can be adjusted in the range of 50-105% depending on the setting of the device operation mode. Or rather, from the setting of the air (oxygen) supply to both combustion chambers.

Note that conventional solid fuel boilers and stoves operate with an efficiency of no more than 70%.

Configuration and internals

The device of long-burning units can be different in a purely constructive design. They can be rectangular section or round, fireboxes can be located one above the other or next to each other in a horizontal plane.

The ignition zone can be located at the top of the fuel filling or at the bottom, oxygen is supplied from the side or jet from below through a special pipe device with holes.

Varieties of aggregates

As with any heating equipment, the choice of device is always based on the power of the unit. And in this regard, there is a lot of diversity.

A popular representative of long-burning boilers is the Stropuva model. Him original design as vertical pipe, inside which a press is installed in the form of a metal pancake. A pipe is attached to it, through which it enters the unit Fresh air(oxygen). This is the so-called telescopic system. The press is installed on the fuel tab.

Between the walls of the boiler body and the press (pancake) there is a gap through which the pyrolysis gas enters the second part of the furnace body. This is where combustion takes place. The gradual smoldering of the fuel lowers the press lower and lower, while the gap between the firewood and the press remains the same. Long burning boiler

"Stropuva" with one tab can work for a very long time: on wood up to 70 hours, on coal up to seven days.

The device of this model is almost the same as that of the above. This design was developed by Russian craftsmen, simplifying and improving it a little. Distinctive feature- this is the combustion zone, which is located in the lower layer of fuel. Ignition is carried out from the side of the ash pan, for which a small fire is kindled on its lower surface or a container with liquid fuel is installed.

Two models have one very serious drawback - this is the difficulty in choosing the correct section of the chimney and correctly installing it. Without knowing the laws of heat engineering, it will be difficult to choose a pipe section on your own. Lack of draft or its excess is harmful for the correct operation of the heater.

Therefore, advice - if there is any doubt that the section of the chimney is not chosen correctly, it is necessary to install a damper on it. Within a few hours of operation, it is necessary to set it so that the traction is optimal. True, there is a better way - this is the installation of a bimetallic draft regulator. This is an automatic valve that works without electricity.

And the second. The first part of the chimney from the boiler must be horizontal (minimum 3 m), a slight slope is possible, but not very strong. Then you can lift it vertically.

gas generators

Modern solid fuel boilers for long burning are units operating on the principle of pyrolysis, with additional features. In fact, this wood stoves made of metal. They work on coal, wood, pellets and other solid fuels.

Manufacturers today offer heating boilers with automated loading. True, in this case, pellets or fine coal can be used. A container and an auger are added to the design of the unit. This complicates it, makes it more voluminous, increases the weight and price of the equipment, but at the same time, the process of supplying fuel to the combustion chamber is simplified to a minimum. For example, pellets are poured into a container, from there they are fed into the furnace with a screw.

It should be noted that although gas generators belong to the category of long-burning furnaces, they cannot boast of such a burning time as that of Stropuva. The maximum period of fuel combustion in them is 10 hours. After that, if there is no automated bookmark, you will have to do everything manually, not forgetting to clean the ash pan from soot and ash.

Advantages of long burning boilers

First of all, it is necessary to indicate two main criteria that formed the basis for the high popularity of these heating units:

Reducing the presence of a person in the process of operation and maintenance.
Increasing work efficiency.

It is the second criterion that determines the economic side. That is, a wood-burning heating unit consumes a minimum of fuel, while releasing a large amount of thermal energy.

The advantages include the fact that a long-burning boiler that runs on wood and coal practically does not emit carbon oxides into the atmosphere, which pollute environment. The thing is that the fuel burns almost completely. Pyrolysis gas (aka carbon monoxide) burns with all fuel particles. An insignificant amount of harmful substances is emitted into the atmosphere.

Plus to everything thermal energy almost 100% remains inside the unit. A small amount of it exits through the chimney. In addition, the temperature of the exhaust gases does not exceed +50 °C.

Long burning units and water heating

All of the models described above are ordinary stoves that give off heat from their body, thereby heating one or two rooms ( small house). In this category there are models that are also used for water heating. In this case, the design of the unit itself becomes more complicated, but not by much.

Design features

To heat the coolant, a water jacket is installed in almost all models for a water heating system. For example, the Stropuva boiler. Its body consists of two cylinders, between which the coolant moves.

In a group of gas generators, a water jacket is installed around the combustion chamber. There are models in which a heat exchanger is mounted in the form of an additional tank at the back or side of the firebox.

All boilers of this type, operating on heating system houses are well insulated. This is another plus for keeping warm and saving energy.

Model differences

Some design differences have already been written above. But there are other features. Long-burning solid fuel boilers can be single- or double-circuit. They are made from steel or cast iron.

The supply of oxygen to the combustion chamber can be natural or forced (using an installed fan). With automatic setting temperature conditions or completely without automation. That is, the choice is so huge that each consumer, according to his needs and requirements, today will easily select the necessary model.

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A long-burning solid fuel boiler is an ideal option, distinguished by its economy and ease of use. After all, you simply will often have to throw firewood or coal into the furnace, and high efficiency will positively recoup your heating costs at home. Today, there are a lot of interesting models on the market, each of which has its own advantages and disadvantages. When choosing solid fuel long-burning boilers, it is first of all worth noting:

Type of equipment;
power and dimensions of the furnace;
fuel used;
heat exchanger material;
profitability;
durability.

Types of solid fuel heating boilers for long burning

If we talk about the most popular types of heating equipment in this category, then the following should be highlighted first:

classic models with an enlarged firebox;
pyrolysis (gas generating) units;
top-down equipment;
pellet aggregates (automatic supply of fuel resource).

Let's consider in more detail each of the types.

Traditional models with an enlarged firebox

Classic solid fuel boilers of long burning for heating with an enlarged furnace were the first step towards increased duration of work on one tab. Their principle of operation remained unchanged, it just became possible to lay several times more than in conventional models. Due to this, the time interval between approaches for loading a new batch of firewood, coal or pellets has also increased accordingly.

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In Russia, long-burning solid fuel heating boilers with an enlarged loading chamber are often used for heating private country houses. The main disadvantage of this option is the fact that with an increase in the length of the furnace, the power of the unit also increases, which can lead to its boiling in systems with a small number of radiators due to their rapid heating. To avoid this, it is necessary to add one element to the heating system of a private country house - a buffer tank (accumulator tank). This container is filled with a coolant, installed between the heating unit and heat consumers (radiators, underfloor heating, indirect heating boiler). A link with a buffer tank will not only increase the duration between bookmarks, but also reduce heating costs. The battery tank is selected by a specialist, based on the parameters of the system, the heat loss of the house, the type of combustible substance and the power of the unit. The displacement capacity can be calculated independently by taking the ratio of 1 kW of power to 30-50 liters of capacity.

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Gas generating units

If we talk about modern solid fuel boilers for long burning, then one cannot fail to mention pyrolysis specimens. The principle of their operation is the afterburning of wood gas released during smoldering of combustible substances (called pyrolysis). To do this, their design provides for an additional second combustion chamber, which is necessary for afterburning. The savings are obvious:

firstly, smoldering consumes less resources;

secondly, when pyrolysis products enter the afterburning chamber, air is mixed with them, which leads to their combustion and contributes to additional heat release.

All this leads to an increase in the duration of work on one tab up to 10-12 hours. It is important that in this process the fuel resource is consumed almost completely, which facilitates their cleaning, and most of the combustion products are burned out, which makes pyrolysis models more environmentally friendly.

The best long-burning solid fuel heating boilers are often referred to as gas-generating boilers, as they are able to use wood, coal, sawdust and peat briquettes. However, it is worth noting that the use of wood with a moisture content of less than 20% has the greatest efficiency. Therefore, it must be prepared in advance, about a year before the start of operation.

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The main disadvantages include:

fans and other electrical components that exclude the non-volatility of such a purchase;
the need for an elevator unit or a bypass valve with a very cool coolant (to avoid such a situation and disrupt the pyrolysis process, the return water is heated);
restrictions on the use of firewood or coal with high humidity.

Top-down models

In order to understand the principle of operation of such equipment, it is enough to imagine a burning match. It burns significantly longer when the head is at the top. Here the situation is similar: the stored fuel resource burns only in the upper layer. As the upper layer burns, the hearth sinks lower and lower. The equipment consists of two cylinders, between which there is a coolant. In the inner cylinder, the fuel resource is burned, while the outer cylinder is covered with thermal insulation.

Technical features and characteristics of long-burning solid fuel heating boilers, operating on the “top-down” principle, make it possible to provide home heating on one tab for up to 24 hours. This is possible thanks to:

large volumes from one load (compared to the classic solid fuel unit);
layer-by-layer controlled combustion;
dimensions of a particular model.

If we talk about their advantages, then first of all it is worth noting the automatic regulation of the intensity of combustion, relatively affordable prices, as well as the ability to work without circulation pumps.

The main disadvantage is the inability to use bad wood or pellets, in particular with a moisture content of more than 20%.

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Equipment with automatic feeding

Thinking about which solid fuel long-burning boiler is the best, do not forget about automatic feeding technologies. This technique usually consists of:

loading bunker;
burners;
pellet feeding mechanism (auger);
control automation, etc.

Through the auger, the pellets are fed in portions to the burner, where it is ignited and burned. After the combustion of the first portion, the next one is supplied and so on until the system reaches the predetermined coolant temperature. For them, pellets are used, less often fine-grained coal. In Russia, pellet boilers are the most popular.

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Pellets are cylindrical granules no more than 5 centimeters long and up to 8 millimeters in diameter. Pellets are made from peat, wood waste, as well as waste Agriculture. Depending on the power of a particular unit and the volume of the bunker, one bookmark can last up to 7 days of work. All this is achieved by automatic control of the burner, portioned supply of the fuel resource and other settings of the automatic equipment.

Main cons:

high price;
requirements for the boiler room: an area of at least 3x3 meters;

Main advantages:

cheaper cost of 1 kW of energy compared to diesel fuel and liquefied gas;
some models have the possibility of short-term operation on wood;
boiler automation that controls the entire cycle of the boiler;
on some models it is possible to install weather-dependent regulation;
possibility of installation remote control using GSM automation.

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Power and dimensions of the firebox

Before choosing a long-burning solid fuel boiler, it is necessary to first calculate the required power of heating equipment, based on the area of \u200b\u200bthe room, the thickness and height of the walls, the presence of insulation, etc. Also, this criterion is important for calculating the duration of work from 1 bookmark.

Fuel type

Often used both in industry and in everyday life:

wood various kinds;
coal;
oil shale;
pellets;
briquettes;
peat.

In the selection process, you need to initially decide on the most priority option.

Heat exchanger material

When answering the question of how to choose a long-burning solid fuel heating boiler, do not forget about this criterion. There are 2 options: cast iron and steel. Cast iron is a sectional unit, which has a lot of advantages. The only problem is susceptibility to thermal shock.

The steel heat exchanger is a monoblock component that is less susceptible to thermal shock, but has disadvantages during transportation and repair.

economy

Each specific model has differences in costs for service maintenance, maintainability, as well as in efficiency. All this together determines the efficiency of using a particular unit. On our website you can easily find detailed information about each model, as well as photos of long-burning solid fuel boilers.

Durability

High-tech products from reliable manufacturers can last at least 10 years. Proper use and maintenance play a huge role.