The performance of a refrigeration system is measured and found to have a COP of 2.5. The refrigerant is ammonia (R717). The saturated evaporation temperature is -10.0°C, and the saturated condensation temperature is 45.0°C. The liquid leaving the condenser is subcooled by 7.5°C. There is no superheating. Estimate the apparent isentropic efficiency of the compressor. Give your answer to 2DP.

The performance of a refrigeration system is measured and found to have a COP of 2.5. The refrigerant is ammonia (R717). The saturated evaporation temperature is -10.0°C, and the saturated condensation temperature is 45.0°C. The liquid leaving the condenser is subcooled by 7.5°C. There is no superheating. Estimate the apparent isentropic efficiency of the compressor. Give your answer to 2DP.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....

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