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A standard ammonia vapor-compression cycle developing  20 tons of refrigeration operates with a condensing temperature  of 32°C and an evaporating temperature of -14°C

A standard ammonia vapor-compression cycle developing  20 tons of refrigeration operates with a condensing temperature  of 32°C and an evaporating temperature of -14°C

Elements Of Electromagnetics
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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 A standard ammonia vapor-compression cycle developing 

20 tons of refrigeration operates with a condensing temperature 
of 32°C and an evaporating temperature of -14°C.

Calculate only the e,f,g below and explain

(a) refrigerating effect, (b) circulating rate of refrigerant, (c) theoretical power, (d) COP, (e) gallons per minute of cooling water in the condenser, if At is 8C°, (f) quality of the refrigerant entering the evaporator, and (g) temperature of the refrigerant leaving the compressor. (1 gallon contains 8.33 lb. of water) Ans. (a) 1093.7 kJ/kg, (b) 3.86 kg/min., (c) 15.44 kW, (d) 4.56, (e) 40.6 gpm
Transcribed Image Text:(a) refrigerating effect, (b) circulating rate of refrigerant, (c) theoretical power, (d) COP, (e) gallons per minute of cooling water in the condenser, if At is 8C°, (f) quality of the refrigerant entering the evaporator, and (g) temperature of the refrigerant leaving the compressor. (1 gallon contains 8.33 lb. of water) Ans. (a) 1093.7 kJ/kg, (b) 3.86 kg/min., (c) 15.44 kW, (d) 4.56, (e) 40.6 gpm
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