A refrigerator using R-134a is located in a 20°C room. Consider the cycle to be ideal. Saturated vapor at -10°C enters the compressor, and the R-134a exits the compressor at 50°C for 1 MPa compressor pressure. The condenser temperature is 40°C. The mass flow rate of refrigerant around the cycle is 0.2 kg/s, and the coefficient of performance is measured and found to be 2.3. Find the power input to the compressor and the rate of entropy generation in the compressor process

A refrigerator using R-134a is located in a 20°C room. Consider the cycle to be ideal. Saturated vapor at -10°C enters the compressor, and the R-134a exits the compressor at 50°C for 1 MPa compressor pressure. The condenser temperature is 40°C. The mass flow rate of refrigerant around the cycle is 0.2 kg/s, and the coefficient of performance is measured and found to be 2.3. Find the power input to the compressor and the rate of entropy generation in the compressor process

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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