room heater works on which principle and it's explanation ?
Answers
Room heater works on the principle of convection .The heater is always placed on floor. This is because the cold air is heavier than the warm air and so it is placed on the lower part of the room..
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Room heater works on the principle of b) Convection . The heater is always placed on the floor. This is because the cold air Is heavier than warm air and so it is in the lower part of the room. The heater at first heats the cold air in the bottom of the room.
A basic room heater works by heating some kind of element (usually wire like nichrome) and either let radiation spread the heat; or by forcing air over the heating element with a fan. So, the room is heated by convection or radiation.
Electric heat pumps are increasingly being used to heat rooms. They work like an airconditioner in reverse - the condenser coil is blown by air, heating the air and thus the room. In the summer, the waste heat is rejected by making the former expansion coil now the condenser.