A steady-flow Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 608C in the condenser as it rejects heat. The evaporator pressure is 140 kPa. Show the cycle on a T-s di

A steady-flow Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 608C in the condenser as it rejects heat. The evaporator pressure is 140 kPa. Show the cycle on a T-s di

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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Question

. A steady-flow Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The refrigerant
changes from saturated vapor to saturated liquid at 608C in the condenser as it rejects heat. The
evaporator pressure is 140 kPa. Show the cycle on a T-s diagram relative to saturation lines, and
determine (a) the coefficient of performance, (b) the amount of heat absorbed from the
refrigerated space, and (c) the net work input.

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