Question

A vapor compression system with ammonia as refrigerant works between the Pressure of

2 bar and 14 bar. It is fitted with expansion valves and flash chambers such that vapors

are extracted at 6 bar and 10 bar and sent to appropriate compressor suction (Auxiliary

compressors to handle only flash gas). For a refrigerating load of 18TR, calculate the

power required to drive the three compressors. How does the COP of the system compare

with a simple saturated cycle with same pressure limits?​

Answer 1

Answer:

A vapor compression system with ammonia as refrigerant works between the Pressure of

2 bar and 14 bar. It is fitted with expansion valves and flash chambers such that vapors

are extracted at 6 bar and 10 bar and sent to appropriate compressor suction (Auxiliary

compressors to handle only flash gas). For a refrigerating load of 18TR, calculate the

power required to drive the three compressors. How does the COP of the system compare

with a simple saturated cycle with same pressure limits?

Explanation:

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