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Mechanical Engineering · Q223

Refrigeration And Air Conditioning

Engineering and GATE · Mechanical Engineering · question 223

Q223

The refrigerant for a refrigerator should have

A.
High sensible heat
B.
High total heat
C.
High latent heat
Answer
D.
Low latent heat

Answer: Option C

Solution

Answer: Option C
Solution:
The specific heat of liquid should be as small as possible and of vapour should be as high as possible to give less superheating of vapour. High latent heat of vaporization to get more refrigeration effect. Large conductivity to reduce size of condenser and evaporator. Low specific volume of vapour.