A vapor compression refrigeration system has a condensing pressure of 15 bars. The R-12 is circulating with an unknown mass flow rate and also has a refrigerating capacity of 20 tons. Other data are known below. Determine the (a) mass flow rate (b) power required (c) COP (d) isentropic efficiency.

A vapor compression refrigeration system has a condensing pressure of 15 bars. The R-12 is circulating with an unknown mass flow rate and also has a refrigerating capacity of 20 tons. Other data are known below. Determine the (a) mass flow rate (b) power required (c) COP (d) isentropic efficiency.

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

REFRIGERATION ENGINEERING

ACTUAL VCRS

A vapor compression refrigeration system has a condensing pressure of 15 bars. The R-12 is circulating with an
unknown mass flow rate and also has a refrigerating capacity of 20 tons. Other data are known below. Determine
the (a) mass flow rate (b) power required (c) COP (d) isentropic efficiency.
15bar
T2= 80C
CONDENSER
1500kPa
R-12
150.9kPa
EVAPORATOR
T1= -20C
Qu=20 TR

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