Refrigerator

The refrigerator

The principle of evaporation causes cooling is used in refrigerator . The components of refrigerator are:

1. Compressor  (Pump)
2. Evaporator
3. Expansion valve
4. Vent

Ammonia evaporates inside a coiled copper tube surrounding the freezing compartment . As the ammonia evaporates in these coils, the ammonia absorbs heat from the surroundings air, thus cooling the inside of the refrigerator and its contents. The vapour is circulated through the pump (compressor) to liquid ammonia. The ammonia is recycled. The heat releases during the condensation is sent out through cooling fins or vent.

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