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

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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In 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

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