Consider a heat engine is operating on a steady‐flow Carnot cycle with water as the working fluid. The water mass flow rate in cycle is 0.5 kg/s. The cycle maximum per minimum absolute temperatures ratio is 2.5. The quality of water is 1 at the beginning of the heat‐rejection process and 0 at the end and the ambient temperature is 35°C. Show the cycle on a T‐s and P‐v diagrams relative to the saturation lines, and determine (a) the thermal efficiency, (b) the pressure at the turbine inlet, (c) maximum temperature, minimum pressure (d) the network output, (e) the entropy changes in all processes, and (f) the actual network output with second law efficiency of 45%.

Consider a heat engine is operating on a steady‐flow Carnot cycle with water as the working fluid. The water mass flow rate in cycle is 0.5 kg/s. The cycle maximum per minimum absolute temperatures ratio is 2.5. The quality of water is 1 at the beginning of the heat‐rejection process and 0 at the end and the ambient temperature is 35°C. Show the cycle on a T‐s and P‐v diagrams relative to the saturation lines, and determine (a) the thermal efficiency, (b) the pressure at the turbine inlet, (c) maximum temperature, minimum pressure (d) the network output, (e) the entropy changes in all processes, and (f) the actual network output with second law efficiency of 45%.

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

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