03: A refrigerator working on Carnot cycle uses R134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 30 C° in the condenser as it rejects heat. The evaporator pressure is 120 kPa. Show the cycle on a T-s diagram relative to saturation lines, and determine (a) COP (b) Amount of heat absorbed from the refrigerated space, and (c) Consumed work.

03: A refrigerator working on Carnot cycle uses R134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 30 C° in the condenser as it rejects heat. The evaporator pressure is 120 kPa. Show the cycle on a T-s diagram relative to saturation lines, and determine (a) COP (b) Amount of heat absorbed from the refrigerated space, and (c) Consumed work.

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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