We mount the heating system in a private house with our ownhands The stove heating is already retiring into oblivion, and most private houses are increasingly equipped with heating systems (usually water heating systems). Knowledge and understanding of the principles of operation of water heating is necessary both to avoid cardinal errors in installation and design, and for the subsequent diagnosis of malfunctions in its operation. Constructional elements included in the system of water heating. This type of heating has different names: water, hydraulic or liquid. It is easy to guess that all these names are associated with the main coolant that circulates through the pipes between the heating device (boiler) and the radiators (convectors) - this is liquid (mainly water). It is important to understand that water heating is a closed system. The boiler, pipes and radiators are the main elements, but not the only ones. In addition, it is equipped with cranes (or shut-off valves), a surge tank, a safety unit and a manometer. We'll talk about them a little later. About the principle of water heating. Basically, the operation of the heating system is quite simple. Passing heating in the boiler, the coolant (liquid) due to expansion (or forced) is fed through pipes to radiators or convectors, which, in turn, give heat to the room. Due to the fact that all these elements represent a closed system, fluid motion in it occurs cyclically. Types of liquid heating. Water heating systems are divided according to the circulation method into two categories: with forced (pumping) and natural (convective) circulation. Details of the operation of both systems will be described below. This option is quite simple in terms of composition,However, it requires qualification for installation. After heating in the boiler, the coolant expands, and its density decreases, as a result of which water rises up the vertical riser. At the top of the system, an expansion tank is placed in which the heated liquid is expelled. After that, it flows down and on the reverse risers flows to convectors or radiators. Cooling, the liquid builds up the density and returns to the heating device. For a water heating system there are several important points. First, it is necessary to correctly choose the diameter of the feeding risers. In order for the natural circulation of water to be possible, the pipes should be quite large in diameter. Secondly, you need to calculate the correct bias for the risers. From the feeding riser, it should be placed in the direction of the radiators, and for the reverse riser - the slope must be made towards the heating element, i.e. boiler. If these conditions are not observed, the natural circulation will be disturbed. Heating with forced circulation. The fluid here is driven by a pump (circulating). For different heating systems, pumps of various capacities have been created. The illustration shows the scheme of operation of this type of heating. Heated liquid under the pressure created by the pump, according to work, is fed to the heaters. Pay attention to the valves shown in the diagram. With their help, the temperature is regulated on any radiator. In turn, the valves are produced both automatically and manually. To eliminate the air from the radiatorsIn addition, the cranes of the Mevskiy are installed, as necessary, by means of them they lower the air. To make the right choice between a water heating system with natural circulation and forced circulation, you should know the strengths and weaknesses of each. Advantages of heating with natural circulation:
- there is no dependence on the availability of electricity, since the system is devoid of a circulation pump.
Advantages of heating with forced circulation:
- the interior of the house will not be damaged by the types of pipes, as they are usually neatly hidden;
- because of the possibility of regulation, such a system is more economical in relation to fuel consumption;
- the presence of good pressure allows you to install the control valves on the radiators, thanks to which it becomes possible to set your temperature for any room;
- The use of plastic instead of steel pipes is allowed, which further reduces the costs of installation and materials.
Disadvantages of heating with natural circulation:
- there is no possibility of simultaneous use with warm floors;
- there is no possibility to adjust the temperatures of individual radiators or convectors;
- the impossibility of the system being equipped with an indirect heating boiler;
- greater fuel consumption;
- complexity of installation;
- when using large-diameter metal pipes, not only does the cost increase, but the interior of the house deteriorates.
Lack of heating with forced circulation:
- absolute dependence on the availability of electricity, without which the operation of the system is impossible.
Now you can mount the water heating system yourself in your own house.