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means of making a building comfortably warm relative to a colder outside temperature. Old, primitive methods of heating a building or a room within it include the open fire, the fireplace, and the stove.
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a heating unit in central heating systems in which most of the heat is transferred from a heat carrier to the space being heated by convection; it is used for residential, public, and industrial buildings. The most widely used convector is a heating element in a metal housing. Air from the space flows underneath to the heating element and comes into contact with it, whereupon it is heated and discharged through a top opening into the space. The heated—and consequently lighter—air in the space above the heating element creates a draft that increases in proportion to the height h of the volume. A vent is installed above the convector heating element to regulate the amount of air passing through the convector and its heat output. During operation of a convector, dust is periodically removed from the surface of the heating element.