commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting waste heat to cooling water that enters the condenser at 20°C at a rate of 0.25 kg/s and leaves at 28°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the Talking PIYATIDA TENURUK compressor consumes 3.7 kW of power, determine (a) the mass flow rate of the refrigerant (b) the refrigeration load (c) the COP (d) the minimum power input to the compressor for the same refrigeration load

commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting waste heat to cooling water that enters the condenser at 20°C at a rate of 0.25 kg/s and leaves at 28°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the Talking PIYATIDA TENURUK compressor consumes 3.7 kW of power, determine (a) the mass flow rate of the refrigerant (b) the refrigeration load (c) the COP (d) the minimum power input to the compressor for the same refrigeration load

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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A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables. 26°C 1.2 MPa 5°C subcooled Expansion valve Condenser Evaporator OL Water 18°C 1.2 MPa 50°C Compressor W Determine the mass flow rate of the refrigerant. (You must provide an answer before moving to the next part.) The mass flow rate of the refrigerant is kg/s.
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables. 26°C 1.2 MPa 5°C subcooled Expansion valve Condenser Evaporator ė Water 18°C 1.2 MPa 50°C Compressor in Determine the minimum power input to the compressor for the same refrigeration load. The minimum power input to the compressor for the same refrigeration load is KW. K
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A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at –35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine the minimum power input to the compressor for the same refrigeration load.
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