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During a test run of an ammonia refrigerating cycle test data are as follows: Suction pressure = 250 kPa Condenser pressure = 1250 kPa Refrigerating capacity = 30 kW Compressor clearance = 5% Compression efficiency = 80%

During a test run of an ammonia refrigerating cycle test data are as follows: Suction pressure = 250 kPa Condenser pressure = 1250 kPa Refrigerating capacity = 30 kW Compressor clearance = 5% Compression efficiency = 80%

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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During a test run of an ammonia refrigerating cycle test data are as follows: Suction pressure = 250 kPa Condenser pressure = 1250 kPa %3D Refrigerating capacity = 30 kW %3D Compressor clearance 5% Compression efficiency = 80% Mechanical efficiency = 75% Actual volumetric efficiency = 74% %3D k = 1.3 Calculate the following: 1. Volumetric efficiency 2. The ideal and actual COP 3. The brake work of the compressor
Transcribed Image Text:During a test run of an ammonia refrigerating cycle test data are as follows: Suction pressure = 250 kPa Condenser pressure = 1250 kPa %3D Refrigerating capacity = 30 kW %3D Compressor clearance 5% Compression efficiency = 80% Mechanical efficiency = 75% Actual volumetric efficiency = 74% %3D k = 1.3 Calculate the following: 1. Volumetric efficiency 2. The ideal and actual COP 3. The brake work of the compressor
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