Radiators are one of the important components of modern heating systems. The principle of operation of the radiators is as follows: the coolant (water) through the pipes enters the radiator, he in turn heats up and gives the heat to the air of the room.
Distinguish between two methods of heat transfer: convection and radiation. When radiation, heat is given directly through the heated surface, and during convection, air is heated, which, circulating in special cavities, gives the heat out. In radiators, 60% heat is transmitted by radiation and 40% convection.
Consider the main types of heating radiators. Cast iron radiators have proven themselves perfectly, they remain hot for a long time due to the high heat capacity of cast iron, withstand the high water pressure in the system, but they may not correspond to the design of the room. Aluminum – easier, have good heat transfer, but expensive and can not always withstand high pressure.
Bimetallic radiators are an aluminum corps, inside which steel pipes with a coolant pass. Aluminum perfectly gives heat, and steel withstands high pressure. Steel panel radiators are used in autonomous heating systems, where water does not merge for the summer, relatively inexpensive and have high heat transfer.
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