A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 30 kW of refrigeration at -40C. The R12 system operates at -10C evaporating temp and 38C condensing temp. There is a 10 degree overlap of temperatures in the cascade condenser. Calculate the (a) mass flow rate of R22, (b) mass flow rate of R12, (c) the power required by R22 compressor, and the power required by R12 compressor.
A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 30 kW of refrigeration at -40C. The R12 system operates at -10C evaporating temp and 38C condensing temp. There is a 10 degree overlap of temperatures in the cascade condenser. Calculate the (a) mass flow rate of R22, (b) mass flow rate of R12, (c) the power required by R22 compressor, and the power required by R12 compressor.
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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3)A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 30 kW of refrigeration at -40C. The R12 system operates at -10C evaporating temp and 38C condensing temp. There is a 10 degree overlap of temperatures in the cascade condenser. Calculate the (a) mass flow rate of R22, (b) mass flow rate of R12, (c) the power required by R22 compressor, and the power required by R12 compressor.
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