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M. O. Kruglyak, EM-71
The heating system is a complex of elements which are intended to receive and transfer the warmth to a premise which is heated. Each system of heating includes three basic elements: the generator of heat, system of heat conductors and devices. Let's consider the following kinds of heating:
• systems of water heating;
• systems of steam heating;
• electric heating;
• gas heating;
Water heating has many advantages, therefore it is the most widespread presently. Among the advantages of water heating you can find: silent work, the lack of the necessity of the electric drive, its durability, the stability of temperature of the air indoors.
For the process of steam heating pipelines we need pipes of smaller diameters, which are less expensive. Such system can be used in multi-stored houses as steam density is small. But such system of heating is inconvenient in operation, causes air pollution, and there are great losses of heat in steam lines. Owing to necessity for frequent switching-off of system, decreasing lines of service of steam lines are used.
Sometimes electric heating is unique. This kind of heating is rational for using as time heating devices. Among the advantages in the use of electric heating we have: good control ability, absence of products of combustion and atmosphere pollution, simplicity of the installation of electronic conducting. The basic lack is high cost of the electric power and fire danger.
Gas is used for heating the houses both with the help of centralized heat supply and the local heating. It is pushed into the fire chambers of steam and water-heating coppers, in heating furnaces and in gas heating devices. Local devices don’t have the big cost of operation, and are simple in service, and are highly effective. There are identical demands to all systems of heating:
- The Sanitary-and-hygienic;
- The economic;
- The building;
- The assembly;
- The operational;
- The esthetic;
All these requirements should be considered in the heating systems design.
S. G. Zolotova, ELA
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