In the evaporator of refrigerator system, the refrigerant changes from ______

  1. Vapour to liquid
  2. Liquid to vapour
  3. Remains in liquid form
  4. None of these

Answer (Detailed Solution Below)

Option 2 : Liquid to vapour
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Refrigeration is a process of heat removal from a substance or from a space resulting in lower temperature below that of the surroundings. Major parts of the conventional refrigeration system are as followed.

Evaporator: It is the part where cooling takes place. The heat is absorbed in the evaporator. The liquid refrigerant is converted into vapour refrigerant in the evaporator.

Condenser: The function of the condenser is to remove the heat carried by the refrigerant and reduce its temperature at constant pressure.

Receiver: It is the reservoir for excess liquid refrigerant not being in the system.

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