A vapour compression refrigeration syste vaporator temperature of 263 K and a conde sed is R-12 and is subcooled by 6°C before e perheated by 7°C before leaving the evapor. eversible adiabatic. The refrigeration compress qual to 1.25 times the bore and runs at 1000r Refrigerating effect per kg ; Mass of refrigerant circulated per minute ;

A vapour compression refrigeration syste vaporator temperature of 263 K and a conde sed is R-12 and is subcooled by 6°C before e perheated by 7°C before leaving the evapor. eversible adiabatic. The refrigeration compress qual to 1.25 times the bore and runs at 1000r Refrigerating effect per kg ; Mass of refrigerant circulated per minute ;

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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Question

3. A vapour compression refrigeration system of 2400 kJ/min capacity works at an
evaporator temperature of 263 K and a condenser temperature of 303 K. The refrigerant
used is R-12 and is subcooled by 6°C before entering the expansion valve and vapour is
superheated by 7°C before leaving the evaporator coil. The compression of refrigerant is
reversible adiabatic. The refrigeration compressor is two-cylinder, single acting with stroke
equal to 1.25 times the bore and runs at 1000 r.p.m. Determine:
1. Refrigerating effect per kg ;
2. Mass of refrigerant circulated per minute ;
3. Theoretical piston displacement per minute;
4. Power required to run the com pressor;
5. Heat removed in through condenser; and
6. Bore and stroke of the compressor.

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