n a Refrigerant 12 system which serves a 212 kw evaporator at - 30 0C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 400C . Given that, h2=356kJ/kg, h4=367kJ/kg Compute the following: a.) mass flow rate at low stage compressor (m1) ANSWER: 1.53661 kg/s b.) mass flow rate at high stage compressor (m3) ANSWER: 2.11791 kg/s c.) low stage compressor work ANSWER: 27.43931 kw d.) high stage compressor work ANSWER: 32.63926 kw e.) total compressor work ANSWER: 60.078575 kw f.) COP ANSWER: 3.52871 g.) heat rejected in the condenser ANSWER: 272.07857 kw

n a Refrigerant 12 system which serves a 212 kw evaporator at - 30 0C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 400C . Given that, h2=356kJ/kg, h4=367kJ/kg Compute the following: a.) mass flow rate at low stage compressor (m1) ANSWER: 1.53661 kg/s b.) mass flow rate at high stage compressor (m3) ANSWER: 2.11791 kg/s c.) low stage compressor work ANSWER: 27.43931 kw d.) high stage compressor work ANSWER: 32.63926 kw e.) total compressor work ANSWER: 60.078575 kw f.) COP ANSWER: 3.52871 g.) heat rejected in the condenser ANSWER: 272.07857 kw

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

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....

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