4. An ammonia refrigerating cycle operates at 247 kPa suction pressure and 1200 kPa condenser pressure. Otherdata are the following:Refrigerating capacityCompressor clearance28 kW5%Compression efficiencyMechanical efficiency80%75%Actual volumetric efficiency74%Determine (a) the clearance volumetric efficiency, (b) the ideal and actual COP, (c) the mass flow rate of ammonia,and (d) the brake work.

Answered: Image /qna-images/answer/563faa6d-8e4d-444b-8373-8e7f8a6b4186.jpg

4. An ammonia refrigerating cycle operates at 247 kPa suction pressure and 1200 kPa condenser pressure. Other data are the following: Refrigerating capacity 28 kW Compressor clearance Compression efficiency 5% 80% Mechanical efficiency 75% Actual volumetric efficiency 74% Determine (a) the clearance volumetric efficiency, (b) the ideal and actual COP, (c) the mass flow rate of ammonia, and (d) the brake work.

4. An ammonia refrigerating cycle operates at 247 kPa suction pressure and 1200 kPa condenser pressure. Other data are the following: Refrigerating capacity 28 kW Compressor clearance Compression efficiency 5% 80% Mechanical efficiency 75% Actual volumetric efficiency 74% Determine (a) the clearance volumetric efficiency, (b) the ideal and actual COP, (c) the mass flow rate of ammonia, and (d) the brake work.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...

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