An ideal liquid refrigerant should______________________?
Correct answer: C. Both A. and B
- A. Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils
- B. Not have unduly high vapour pressure at the condenser temperature
- C. Both A. and B
- D. Have low specific heat
Explanation
A practical refrigerant should have a vapor pressure above atmospheric pressure in the evaporator, avoiding air leakage, but should not have excessively high pressure in the condenser. Thus, both stated pressure conditions are required.
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