An ideal Solvay refrigerator utilizing nitrogen as the working fluid operates between 0.101 and 2.02 MPa with the compression handled isothermally at 300 K. The maximum tem- perature in the cold space is 190 K. If the work obtained from the expansion process is used to reduce the work of compression, determine the net work per unit mass compressed, the refrigeration effect per unit mass compressed, and the figure of merit for the refrigeration system. To simplify the calculations, it may be assumed that the mass of gas present in the regenerator during the expansion process is negligible compared to the mass of gas in the expansion volume.

An ideal Solvay refrigerator utilizing nitrogen as the working fluid operates between 0.101 and 2.02 MPa with the compression handled isothermally at 300 K. The maximum tem- perature in the cold space is 190 K. If the work obtained from the expansion process is used to reduce the work of compression, determine the net work per unit mass compressed, the refrigeration effect per unit mass compressed, and the figure of merit for the refrigeration system. To simplify the calculations, it may be assumed that the mass of gas present in the regenerator during the expansion process is negligible compared to the mass of gas in the expansion volume.

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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