For the private sector, country houses built in the special role played by the autonomous heating system. For that category of people who use gas-fired boilers, special issues arise. More complex is the case in the category of the population which is forced to use for home heating heaters for solid fuels. For solid fuel boilers traditionally as the main fuel used resource wood or coal. However, recently gaining popularity of this kind of organic fuels such as pellets. Solid fuel boilers for pellets produced today - a powerful, cost-effective and easy-to-use heaters.
Due to its performance this kind of heating equipment able to make a real competition to the gas heating. For the central and northern regions of the country, rich in forest resources, the production of pellets is one of the items of income woodworking enterprises. So if you have a real opportunity to get instant access to this type of solid fuel, bet on pellet boilers. You will not regret it!
Read also about the pellet stoves.
Some information about pellet. What it is?
Pellets are granules of cylindrical shape with a size of 5-7 cm, made of wood waste. The diameter of such a granule little more than 6-8 mm. At granules size affects the quality of the raw materials used and the method of production.
Under pressure, the wood raw material is compressed, thereby achieving a high density of matter. Granules unlike wood, drowning in water. The manufacturing process is achieved the required humidity composition, no more than 10%. Such strict parameters to the finished product caused by the desire to achieve maximum results in the combustion process. long burning boilers, aggregates pyrolysis type with pellets eagerly used as the main fuel.
Important! Choosing a heating boiler to vote in advance, from which supplier you will receive fuel. Pellets made from different manufacturers differ not only in size, but differ in the composition of raw materials. Otherwise, the boiler will be unstable, giving each time the different process parameters.
Furniture factory and wood processing enterprises such wastes occur daily and in large quantities. Abroad, it has long found application using wood waste products as a fuel feedstock. Typically, for the manufacture of the fuel used is mainly the waste production from softwood. The cost price of such products is not high. Raw materials for production are always available in sufficient quantities.
Less commonly, for the manufacture of furniture production come from waste, where most expensive types of wood are used. Such pellets are better and longer burning. The only negative, which is evident in this case, the high price of the fuel.
Today, on the production of fuel pellets are active waste from primary agricultural production and food industry. The husk from the seeds of sunflower, corn cobs residues are excellent raw material for combustion.
The main advantage that the pellets - a complete combustion in the furnace of the boiler equipment. This type of fuel different high calorific value, which is compared with a similar coal combustion. If it is possible to use pellets constantly, why not take advantage of it. What to prefer pellet aggregate or solid fuel boiler in the classic version, choose the first option.
On a note: According to experts of Heating, pellet boiler is more economical. The efficiency of the unit is 1.5-2 times higher than any other boiler equipment, solid fuel.
The principle of operation of pellet boiler
What distinguishes the heater that runs on pellets and what are its main design features, will understand more.
At first glance, this type of equipment may seem simple and undemanding in operation. But it only seems so. Modern solid fuel boiler for pellets - a high-tech product, equipped with all the attendant of the technique equipment, devices and instruments. It is necessary to say at once, the key factor for the subsequent evaluation of the heating capacity of the unit is a fuel container. The larger the tank, the longer it will operate heater without human intervention.
The whole process of the boiler for pellets can be divided into the following stages:
- a first step, the fuel supply;
- a second stage, the combustion process;
- thermal energy transfer process.
The boiler itself operates as follows. Fuel contained in the hopper is supplied to the combustor automatically due to the auger transmission, i.e. portions. As combustion is constantly fed into the furnace the new granules, whereby the combustion process is constantly maintained. Coming into the furnace pellets burn completely, to minimize the formation of ash and soot.
In the future construction of the boiler equipment of this type differ from the traditional understanding of the principles of operation of solid units. The combustion process occurs mainly not in the combustion chamber and the burner, which has a certain shape and construction. Once the burner stops fuel flow, the combustion process automatically stops. Those. if pre-calculate the necessary amount of fuel for heating premises, it is possible to achieve almost complete autonomy of the whole process.
On a note: pellet burners in boilers are of two types: retornye (volume combustion) and flare.
Solid fuel burner for pellets, are the main mechanism of action. Fed under high pressure by the operation of the blower nozzles and the presence of the air contributes to the high intensity combustion. During operation of the boiler, the heating temperature reaches 4500FROM.
Retornaya burner - a cup-shaped device, which are laterally elongated holes (nozzles). Through these holes the air flows, from which combustion intensity dependent. Depending on the aggregate structure, pellets fed to the bowl from the top or pushed from below by the operation of the screw. In this case there is a volume combustion. During the process, considering the quality of the burner, the controller monitors, special device maintaining records fuel admission to the burner.
Flare burners operate differently. There pellets fed to a special area where they are blowing air, as a result of which a strong and sustained torch. Flames in this case is directed in the horizontal plane. The volume of air which enters by operating the fan, sufficient to complete combustion of the fuel pellets. Both the first and second burners type well cope with the task of heating the boiler water jacket.
Processes occurring in the automatic mode. The main advantages of pellet boilers
Comparing the solid units operating with conventional pellet boilers, attracts special attention availability of automated processes in which not only improves the performance of the boiler equipment. Pellet boilers can be considered virtually autonomous heating devices. Factory model has the following advantages:
- Dosage accurately calculated fuel supply to the furnace;
- automatic ignition cycle and extinguish the burner;
- technical possibility of adjustment of the combustion intensity;
- technological control over the degree of heating of the heat exchanger;
- control of the pressure inside the boiler equipment;
- Automated control of the state of traction.
All of these processes comply with the requirements that apply to virtually all heating appliances used for domestic heating systems. Recent factory products differ not only high performance and efficiency (92%), but also a high level of security. It can be a long list of advantages of this technology. The only negative in all this - the high price of the equipment, when compared with the conventional type boiler.
Solid fuel boiler with pellet burner can be done by hand, with a little effort, modernizing the existing house heater. Alteration of solid fuel boilers for pellets will not take long. It suffices to make changes to the combustor unit and acquire a special burner. Alterations will take time, will cost a certain amount, but in the end it will be possible to rely on the good performance of the heater in a new role.
conclusion
As a result, considering all the advantages and technical capabilities of boilers running on pellets, can be quite definite conclusion. This technique - is relevant today and can successfully compete with gas units. For residents of the areas where there is no centralized system of gas, pellet boilers are able to solve all the domestic needs of the inhabitants of the house. High power, high performance, and most importantly - the possibility of long-term work without human intervention, make this equipment is very popular.
Having the calculation of fuel consumption can be achieved continuous operation of the heating system without your participation. For heating the living space of 100 square meters. meters (with a ceiling height 2.8-3 m) sufficiently to 100 kW thermal energy which corresponds to the burning of 25-30 kg. pellets. Therefore, in a little less than a month it requires a ton of this fuel. Of course the cost is fuel in 5-7 times more expensive than natural gas, however, in the absence thereof, pellets better alternative to conventional coal and firewood. Which boiler to choose to install in your own home, you decide.
If you want to have the house clean, warm and cozy. On top of all, you want to have more free time, solid fuel boilers, fuel pellets will be a great boon. You do not have to become a fireman, you do not have to run at night and watch that would not have gone out the boiler. With the equipment of your vacation home or cottage will be much more comfortable and cozy.
