6. Find the C.O.P. of a refrigeration system if the work input is 30 KJ/kg and refrigeration effect produced is 120 KJ/kg of refrigerant flowing. a) 3.00 b) 4.00 c) 0.75 d) 0.25

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
Chapter2: Matter And Energy
Section: Chapter Questions
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6. Find the C.O.P. of a refrigeration system if the work input is 30 KJ/kg and refrigeration effect produced is 120 KJ/kg of
refrigerant flowing.
a) 3.00
b) 4.00
c) 0.75
d) 0.25
Transcribed Image Text:6. Find the C.O.P. of a refrigeration system if the work input is 30 KJ/kg and refrigeration effect produced is 120 KJ/kg of refrigerant flowing. a) 3.00 b) 4.00 c) 0.75 d) 0.25
Expert Solution
Step 1

Given,

Work input = W = 30 kJ/kg

Refrigeration effect = QR = 120 kJ/kg

 

Coefficient of Performance (COP) of refrigerator is given by,

COP = Refrigeration effectWork done = QRW= 12030= 4

 

Hence, COP of refrigerator is 4

 

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