History of creation
The creator of the Stropuva boiler was the Lithuanian engineer Edmundas Strupaitis, who invented a top-down combustion device in 2000. Already in 2005, the sling heating boiler was awarded the CE certificate, which confirms the high quality of the device. And in 2008, in Lithuania, the structure was named “The Best Product of the Year”, and then the boiler was supplied to Russia and other European countries. Today, Stropuva boiler furnaces are sold in most EU and CIS countries.
The official distributor of the Lithuanian company in the countries of the EAEU Customs Union is Baikal Service LLC. Construction of the plant enterprise "Stropuva Baikal Service" for the manufacture of boilers in the territory of the Russian Federation began in 2012. Today, more than 100 dealers in different regions of the country are engaged in the sale of these factory products.
The structure and principle of operation of the wood-burning boiler Stropuva
The body consists of two main parts: a cylindrical container placed in another, the same cylindrical container, which are "wrapped" in thermal insulation. The coolant circulates in the cavity between the containers. The firebox is located inside a small container.
The bit-temperature draft regulator makes it possible for the boiler to independently, without human intervention, regulate the volume of air flow into the furnace. The action of the regulator is based on the fact that the boiler body expands during warming up and the bit-temperature regulator closes the damper automatically. If the combustion slows down, then the opposite action takes place - the body cools, contracts, and the regulator opens the damper.
Just like in the Bubafon stove, the combustion process is carried out only in the upper zone of the bookmark, an adjustable volume of oxygen enters it through the air distributor pipe (also called a heel or piston), which has a positive effect on the duration of the boiler burning. Before entering the furnace, the air is preheated in a special air heating chamber located in the upper zone of the boiler.
There is always an air distributor on the tab, and when the fuel burns, it goes down.
Important! The boiler efficiency can be increased or decreased by changing the volume of air intake.
Based on the type of Stropuv's boiler, firewood, pellets and coal can serve as its fuel. To work on coal and pellets, universal boilers with a U attachment are used, equipped with a damper and a grate.
The boiler has two doors:
- Top door - for loading fuel;
- Lower door - for ash removal.
At the back there is a chimney hole. The inlet and outlet of the coolant are also located there. All boiler models for supply and return are equipped with a 32 mm pipe.
Sling S10U characteristics
The power of this model is 10 kW. At the same time, it is capable of heating the area from 50 to 100 sq. m. Holds fuel 200 cubic meters. dm, and coal can be laid as much as 75 kg. However, only 25 kg of firewood will fit. Moreover, their length should not exceed 30 cm. No more than 34 liters of water is collected directly in the boiler cylinder. Firewood burns down on average in 31 hours. This is not a very high figure, but the situation is different with other materials. If you lay the coal, then this will be enough for more than three days. The efficiency of this model is 91%.
The water pressure in the boiler is 2 bar. At the same time, the valve keeps it at 1.5 bar. The flow of heated water is 0.2 cubic meters. m per hour. At the same time, the maximum indicators sometimes reach 0.25 cubic meters. m per hour. The water temperature in the boiler is 85 degrees. The dimensions of the loading opening are 250 by 210 mm.The height of this model is 1550 mm. The chimney diameter is only 160 mm. The minimum section of the chimney is 200 cm. The assembled boiler height is 1920 mm. Moreover, its depth is 450 mm. The total weight of the device is 450 mm.
Design advantages
- In autonomy. Long-burning wood-burning boilers have no electronics, therefore there is no dependence on electricity, and the combination with heating systems with natural circulation of the coolant makes them completely autonomous. Universal boilers that run on different types of fuel do not differ in such autonomy, because they are equipped with an automatic option for oxygen supply to the furnace, which uses 15-20W / h.
- High efficiency, which can be adjusted by decreasing or increasing the volume of incoming air.
- In long work on one fuel tab. With a minimum air supply, such a boiler on one tab of firewood will work up to 31 hours, and at maximum mode - up to six hours. Universal boilers are distinguished by the most productive "performance" among the general lineup of sling. When working on coal, the duration of combustion with the minimum mode is designed for 130 hours, and with the maximum mode - for 32 hours. When loading pellets, the burning time is calculated up to 72 hours.
- Beautifully designed.
You should also know about negative reviews, this is your safety:
For the universal S10U model, the required volume of fuel for one portion of 10 kW is:
- coal - 50 kg;
- firewood - 25 kg;
- pellets - 90 kg.
Important! For optimal operation, it is best to select the boiler power with a 30% margin compared to the area of the room that is heated.
Types of boilers
Stropuva's equipment, like other types of devices operating on solid fuel, the manufacturer produces in different capacities. In addition, there are simpler models that work on wood and waste of this material, and there are more universal ones. The combustion chamber of the latter makes it possible to burn different brands of coal (except for those used in blast furnaces), as well as various fuel briquettes and pellets.
Long burning solid propellants ordinary
Types of fuel for the universal solid fuel boiler Stropuva
The devices work only on firewood and wood waste. Technical characteristics of the medium power device:
- Heat output - 10 kilowatts.
- The recommended area for heating is no more than 100 squares.
- The efficiency is about 87%.
- The volume of the water jacket is 34 liters.
- The capacity of the firewood hopper is about 25 kg.
- The size of the log in length is no more than 0.35 meters.
- The parameters of the firebox are 0.350X0.210X0.250 meters.
- Weight and dimensions - 1.92 meters height, 0.45 meters diameter, 185 kilograms.
Original device models are produced in the Republic of Lithuania.
Long burning boilers Stropuva universal
For the unit, you need to select a separate furnace
These units are floor-mounted and can operate on a variety of natural fuels: wood materials, coal, peat and briquettes. The models are equipped with a forced air blower and a spacious combustion chamber that allows fuel to be loaded for a long time. High Power Equipment Specifications:
- Heat output power - 20 kilowatts.
- Heated space - 200 squares.
- The efficiency is within 85%.
- The heat exchanger has a capacity of 45 liters.
- The volume of the coal bunker is 130 kilograms.
- Weight and size parameters - 2.1 meters height, 0.56 meters diameter, 246 kilograms.
Due to its compactness, the device can be placed in a small furnace.
Sling boiler: chimney
To a greater extent, the boiler efficiency will depend on the draft in the chimney. At low draft, the combustion products will not have time to leave through the chimney, and as a result, the boiler will begin to smoke, so the room will gradually fill with smoke, and the combustion process will slow down in the firebox.
Usually, lack of traction occurs for the following reasons:
- The chimney height is insufficient. It should be 50 cm higher than the ridge;
- The chimney is filled with combustion products (soot, tar, etc.);
- The chimney diameter is not wide enough;
- Incorrect dimensions of the horizontal chimney zone (length must be at least 20 cm, but not more than 150 cm).
Increased cravings result in:
- increased combustion temperature;
- excessive consumption of fuel;
- high noise during the operation of the boiler.
When arranging a chimney, special attention should be paid to fire safety. The chimney connection to the boiler must be made of metal. All joints of the joints must be tightly sealed. And one more thing - it is necessary to regularly clean not only the chimney pipe, but also its horizontal part, because the accumulations of tar and soot can ignite and form a fire.
Boiler power
When choosing a quality boiler, you should always pay attention to its power. The size of the room that can be heated will depend on this indicator. So that each person can choose his own version, it produces boilers of three different classes. They all have different capacities and can be used in different conditions. Some are suitable for small houses and sheds.
Other boilers (solid fuel) Stropuva, in turn, are designed for large stores and warehouses. Units of the first class have a power of 10 kW, while they are capable of heating up to 100 sq. m. The second type of 20 kW can already cope with a room up to 200 square meters. m. Solid fuel boilers Stropuva of the third class have the highest power - 40 kW. This is enough to heat an area of up to 400 sq. m.
Tips for operating a wood-fired boiler slings
one). When loading the firebox with wood in the upper zone, it is best to lay larger logs at the edges, and smaller ones in the center (no more than 0.5 kg). This is necessary to prevent the formation of a lot of smoke during kindling.
2). It is necessary to fill the firebox completely, this will enable the boiler to work longer on one tab.
3). It is forbidden for air to enter the firebox through the ash cleaning door. During the operation of the boiler, the lower door must be tightly closed.
four). When using firewood, remember to thoroughly clean the ash once a month. When using coal, the ash is removed each time before refueling.
five). It is impossible to raise the air distributor during combustion, because after lowering it, most likely, it will take the wrong position and can sink deep into the burning area, which can affect the operating time of the long-burning wood-burning boiler.
6). The moisture content of the wood should not be more than 30%, otherwise, as a rule, the fuel will not ignite at all, or it will burn weakly, which will not allow the required coolant temperature to be reached.
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Overview of the "Sling S10" model
Compared to the previous model, this long burning solid fuel boiler for water heating is more powerful. At the same time, the loading chamber in it is an order of magnitude larger. At the same time, the size of the firebox door has increased. Thus, fuel loading is carried out very quickly. It is especially comfortable to bookmark firewood no more than 20 cm in size.
Also, this long-burning boiler has good reviews for the ability to immediately lay a lot of coal. With this in mind, one bookmark can be enough for about 10 hours. In this case, the ash can be removed once a week. This is not difficult and quite comfortable to do.
As the owners assure, anyone can regulate traction in this model. In this case, the thermometer of the device is in a convenient place. Also, on the positive side, users described the robust frame of the unit. In general, it turned out to be quite high. This raised the door of the loading chamber slightly. Thus, opening it has become more comfortable for a person.
