A 5 ton refrigeration system operates on a vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant enters the compressor as a saturated vapor at 360 kPa and is compressed to 1.6 MPa with a compressor outlet temperature of 70°C. Also, it enters the throttling valve as a saturated liquid. Determine the quality of the refrigerant at the end of the throttling process ( determine the isentropic efficiency of the compressor (), determine the coefficient of performance ), and determine the compressor input power Draw the cycle on a T-s diagram with respect to the saturation lines

A 5 ton refrigeration system operates on a vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant enters the compressor as a saturated vapor at 360 kPa and is compressed to 1.6 MPa with a compressor outlet temperature of 70°C. Also, it enters the throttling valve as a saturated liquid. Determine the quality of the refrigerant at the end of the throttling process ( determine the isentropic efficiency of the compressor (), determine the coefficient of performance ), and determine the compressor input power Draw the cycle on a T-s diagram with respect to the saturation lines

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 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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