Q.7 The condensing and evaporating temperatures of a vapor compression cycle using R134a are 40°C and -5°C respectively. The vapor leaving the evaporator is heated to 5°C in a heat exchanger using the saturated liquid leaving the condenser. The refrigerant flow rate is 0.3 kgs. The compression process is isentropic. Calculate (i) the heat absorption rate in the evaporator, (ii) the work input to the compressor, and (iii) the COP.

Q.7 The condensing and evaporating temperatures of a vapor compression cycle using R134a are 40°C and -5°C respectively. The vapor leaving the evaporator is heated to 5°C in a heat exchanger using the saturated liquid leaving the condenser. The refrigerant flow rate is 0.3 kgs. The compression process is isentropic. Calculate (i) the heat absorption rate in the evaporator, (ii) the work input to the compressor, and (iii) the COP.

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

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 19RQ: Two methods used to power refrigeration compressors on a ship are _____and ____.

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