4.0 An ammonia compressor operates at an evaporator pressure of 316 kPa and a condenser pressure of 1514.2 kPa. The refrigerant is subcooled 5 degrees and is superheated 8 degrees. A twin-cylinder compressor with bore to stroke ratio of 0.85 is to be used at 1200 rpm. The mechanical efficiency is 77%. For a load of 87.5 kW, determine: (a) the volume flowrate of cooling water in the condenser if the increase in temperature is 7 degrees, (b) the bore and stroke, (c) the size of the driving motor, and (d) the quality of the reffrigerant entering the evenorator

4.0 An ammonia compressor operates at an evaporator pressure of 316 kPa and a condenser pressure of 1514.2 kPa. The refrigerant is subcooled 5 degrees and is superheated 8 degrees. A twin-cylinder compressor with bore to stroke ratio of 0.85 is to be used at 1200 rpm. The mechanical efficiency is 77%. For a load of 87.5 kW, determine: (a) the volume flowrate of cooling water in the condenser if the increase in temperature is 7 degrees, (b) the bore and stroke, (c) the size of the driving motor, and (d) the quality of the reffrigerant entering the evenorator

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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