Dry evaporator is one in which?

  1. The exit from evaporator is dry saturated refrigerant
  2. The exit from evaporator is superheated refrigerant
  3. The exit from evaporator has refrigerant with high dryness fraction
  4. The inlet to the evaporator has refrigerant with some dryness fraction

Answer (Detailed Solution Below)

Option 2 : The exit from evaporator is superheated refrigerant
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Detailed Solution

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In the dry evaporator, the liquid refrigerant is generally fed by an expansion valve. The valve controls the rate of flow of refrigerant in such a way that all the liquid is vaporised, and the vapour is also superheated by the time it reaches the evaporator exit.

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