A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.9 MPa. The mass flow rate of the refrigerant is 0.05 kg/s which exits the condenser as saturated liquid. (a) Show the cycle on a P-h and T-s diagram with respect to saturation lines. (b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor, and (c) the coeifficient of performance.
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.9 MPa. The mass flow rate of the refrigerant is 0.05 kg/s which exits the condenser as saturated liquid. (a) Show the cycle on a P-h and T-s diagram with respect to saturation lines. (b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor, and (c) the coeifficient of performance.
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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A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.9 MPa. The mass flow rate of the refrigerant is 0.05 kg/s which exits the condenser as saturated liquid.
(a) Show the cycle on a P-h and T-s diagram with respect to saturation lines.
(b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor, and
(c) the coeifficient of performance.
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