A mechanical refrigerating system employing R-134a is operated under such conditions that the evaporator temperature is 4 oC and the temperature of the liquid at the refrigerant control is 42 oC, determine the following: a) The properties of p, T, v, h and s for the state points A,B,C,D and E. b) The compressor displacement in L/s required per kilowatt of refrigerant capacity. c) The theoretical power in watts required per kilowatt of refrigerant capacity. d) The total heat rejected at the condenser in kilowatts per kilowatt of the refrigerant capacity. e) The c.o.p of the cycle.
A mechanical refrigerating system employing R-134a is operated under such conditions that the evaporator temperature is 4 oC and the temperature of the liquid at the refrigerant control is 42 oC, determine the following: a) The properties of p, T, v, h and s for the state points A,B,C,D and E. b) The compressor displacement in L/s required per kilowatt of refrigerant capacity. c) The theoretical power in watts required per kilowatt of refrigerant capacity. d) The total heat rejected at the condenser in kilowatts per kilowatt of the refrigerant capacity. e) The c.o.p of the cycle.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
A
evaporator temperature is 4
oC and the temperature of the liquid at the refrigerant control is 42
oC,
determine the following:
a) The properties of p, T, v, h and s for the state points A,B,C,D and E.
b) The compressor displacement in L/s required per kilowatt of refrigerant capacity.
c) The theoretical power in watts required per kilowatt of refrigerant capacity.
d) The total heat rejected at the condenser in kilowatts per kilowatt of the refrigerant
capacity.
e) The c.o.p of the cycle.
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