How does a refrigerator work?

Answer by  sonu (21)

Refrigerator works through two principles 1) Expansion of Gas- reduces its temperature. 2)Laws of thermodynamics-two surfaces of different temperatures come in contact with each other, surface at higher temperature cools and lower temperature warms. Basically refrigeration is the transfer of heat from one place to other.

Answer by  bogeyman (119)

Imagine the heat required to boil water. Then imagine the cooling needed to condense steam back into water. Refrigerant is a chemical compound that boils and condenses at different temperatures than water. It "boils" in the evaporator removing heat (inside refrigerator), then "condenses" in the condensor rejecting the heat (outside).

Answer by  Miffy (216)

Refrigerators work by removing heat from the system. In order to cool things you must remove heat, you cannot 'add cool'. On the back of the refrigerator is a radiator or heat pump which transfers the heat to the external environment. The refrigerator is thermally insulated to stop the transfer of heat into it.

Answer by  Lordschild (1398)

The compressor puts the refrigerant gas under high pressure and sends it to the condenser coil where it looses it's heat and turns into a liquid. The liquid refrigerant travels to the evaporator coil inside the refrigerator which is under lower pressure so the liquid boils at a lower temperature converting it into a gas and cools the inside.

Answer by  alcolon (23)

a refridgerator employees a system of coils filled with refridgerant gas that cycles through the "storage cavity" walls. The copressor of the system is most times electric, and moves the refridgerant up and through the network. When a consumer hears the "hum" of a refridgerator running, this is the action of the compressor doing its job.