Topic: Refrigeration and Air Conditioning
A Carnot refrigerator works in temperature range of 300 K to 270 K with different refrigerants CFC, R-32 and ammonia. Which of the refrigerant give better COP?
- A. CFC
- B. R-32
- C. Ammonia
- D. All gives same COP
Answer: D. All gives same COP
Explanation: The Coefficient of Performance (COP) of a Carnot refrigerator depends entirely on the absolute temperatures of the heat source and heat sink, and is completely independent of the properties of the working fluid (refrigerant) used.