Answered: 10-kW cooling load (i.e., ?̇ L) is to…

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 10-kW cooling load (i.e., ?̇ L) is to be served by operating an ideal vapor-compression refrigeration cycle with its evaporator at 400 kPa and its condenser at 800 kPa. If the compressor’s isentropic efficiency is set at 68%, determine (a) the mass flow rate of the refrigerant, in kg/min

(b) the rate of heat rejection to the environment, in kW

Disregard any heat loss in the expansion valve and compressor as well as the change in potential and kinetic energy of the refrigerant in any part of the cycle.

Use g = 9.81 m/s2 or 32.2 ft/s2 , T(K)=T(°C)+273 and T(R)=T(°F)+460, where applicable.

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