12.A Freon 12 plant operates between saturation temperature limits of -5°C and40°C. The refrigerant leaves the condenser undercooled by 5°C and thecompressor outlet superheated by 20°C. If the compression process isisentropic, calculate:(a). coefficient of performance(b). the mass flowrate of the Freon for a cooling load of 3kW(c). the condition of the Freon entering the evaporator(d). the specific volume of the Freon at the compressor suctionAns: 4.96, 0.0241935kg/s, 0.25 dry, 0.068786m³/kg,

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A Freon 12 plant operates between saturation temperature limits of -5°C℃ and 40°C. The refrigerant leaves the condenser undercooled by 5°C and the compressor outlet superheated by 20°C. If the compression process is isentropic, calculate:

A Freon 12 plant operates between saturation temperature limits of -5°C℃ and 40°C. The refrigerant leaves the condenser undercooled by 5°C and the compressor outlet superheated by 20°C. If the compression process is isentropic, calculate:

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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Question

12.
A Freon 12 plant operates between saturation temperature limits of -5°C and
40°C. The refrigerant leaves the condenser undercooled by 5°C and the
compressor outlet superheated by 20°C. If the compression process is
isentropic, calculate:
(a). coefficient of performance
(b). the mass flowrate of the Freon for a cooling load of 3kW
(c). the condition of the Freon entering the evaporator
(d). the specific volume of the Freon at the compressor suction
Ans: 4.96, 0.0241935kg/s, 0.25 dry, 0.068786m³/kg,

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