Solid-fuel boiler with water circulation inThe heating circuit is the optimal solution for engineering maintenance of a private house. Thanks to the traditional principle of operation, availability of the fuel source and safe construction, such units are very popular. In the market, solid-fuel water boilers are presented in different variations, so it is necessary to approach the choice of the model for specific needs responsibly.
Against the background of other heating units capable ofservicing private houses, this variety has one of the simplest designs. It is formed by a combustion chamber, a heat exchanger, a ash pan, a water circuit system, as well as a housing, and in some versions additional control devices. During operation, solid fuel boilers with a water circuit generate heat, which heats the medium circulating in the pipes. Initially, the design of the boiler device must provide for the infrastructure that it will serve. Active elements of the system, which spread heat, will be the pipe circuits that pass from the equipment design to high-grade batteries. On how much heating channels spread, the power of the unit, suitable for operating under the appropriate conditions, depends.
As for the source of fuel, thisquality can serve and traditional firewood with coal, and biofuel in the form of pellets. However, the latter version is suitable only for equipment of special design or combined models. It should also be noted that hot water boilers on solid fuels emit coals during operation, so the owner will need regular cleaning of the ash pan.
Heat exchangers vary in appearanceused in the manufacture of the material. Manufacturers produce them from steel, cast iron and copper. The most cheap are the steel models, which are made of plate-like metal. Such aggregates are not exposed to the formation of external defects as a result of contact with the coolant, but may be affected by corrosion. In turn, cast iron water boilers with solid fuel are less likely to rust and withstand high temperature loads. But, unlike the steel analogues, such heat exchangers do not guarantee the absence of microcracks arising during direct contact with hot water. For this reason, the service life of cast-iron aggregates does not exceed 20 years on average. In terms of heat conductive function and protection against rust, it is more profitable to use copper exchangers. But they in most cases have small dimensions, which limits the possibility of using such models in large houses.
Based on traditional technology designsdeveloped pyrolyzed versions and models of long-term combustion. As for the first variety, it provides for a chamber for secondary combustion - but not wood with coal, but gas, which is formed in the main stove. As a result, a second stage of heat generation takes place, which increases the efficiency of such boilers. But for their operation, it is necessary to connect to the electrical network in order to activate the fan, which pumps the air into the additional chamber. The principle by which boilers on solid fuels of long-term burning of water were developed, comes from the desire of manufacturers to save the user from the main drawback of all units of this category. For the operation of a solid-state boiler, regular loading of the same firewood or coal is required. Due to the more massive combustion chamber, the designers have increased the combustion time, which also affects the saving of consumables.
On average, such boilers have a capacity ofthe limits of 15-20 kW. At the same time, the calculation for the area served is carried out from the following proportion - 1 kW of power capacity per 10 m2. That is, a boiler for solid-fueled water heating with a capacity of 20 kW will provide heat to the house with an area of 200 m2. But this task can be solved only on condition that the heating circuits are correctly laid, along which the water coolant will circulate.
It should also be taken into account that in the process of workthe unit will emit combustion products. Therefore, it is important to calculate the diameter of the smoke outlet, which will require a hole in the roof. Dimensional characteristics also have significance. Since water boilers with solid fuel are not massively compact in size, in some cases, users are assigned special technical rooms for them.
Heating equipment of high qualityis produced under the German brand Buderus. In its lineup it is possible to find units with a wide range of power potential, intended for both domestic use and for the needs of large enterprises. Also worthy of attention are solid fuel boilers with a water circuit from Czech developers Protherm and models of the Italian brand SIME. The products are characterized by reliability, high productivity and ease of maintenance, which is especially important for the operation of solid fuel equipment. Domestic boilers "Pechkin" and "Lemax Forward" have decent capabilities.
In the initial segment, you can find boilers withprice tags about 15-20 thousand rubles. This is just the products of Russian manufacturers, which has average power indicators. Models from Buderus companies are estimated at 50-60 thousand. But much depends on the characteristics that water boilers have on solid fuels. Prices for units with a capacity of 10-15 kW, for example, may be 30 thousand. However, if the power potential reaches 40 kW, you should prepare for payment of amounts of 100 thousand or more.
The segment of boiler equipment is expanding foraccount for new modifications in the segments of gas, liquid and electrical installations. In this context, wood-burning models seem obsolete, but they have several important advantages. First, solid-fuel heating water boilers require minimum costs during operation. At least, if we compare it with the electrical analogues, since the gas units are also inexpensive. Secondly, here already there is an advantage over gas boilers, solid-fuel models are the safest option for heating in this class.
