:(a) A four cylinder, single acting R-12 compressor 35 cm x 40 cm runs at 1000 r.p.m. The compressor clearance factor is 0.04 and the law of compression pV1.1=C. the operating pressures for the vapour compression refrigeration system are: 8.47 bar (350C) and 1.004bar (-300C). The refrigerant temperatures are: entering the compressor -200C, leaving the compressor 500C; entering the condenser 450C, leaving the condenser 250C, entering the expansion valve 300C and leaving the evaporator dry saturated. Assuming that heat removed in the compressor is 26 kJ/sec. calculate: Mass of condensing cooling water assuming the rise in temperature to be 100Tabulate energy balance for 1 kg of refrigerant

Given-Information:- 4-cylinder Diameter, D = 35 cm = 0.35 mLength, L = 40 cm = 0.4 mSpeed of…

Answered: pressor -200C, leaving the compressor…

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) A four cylinder, single acting R-12 compressor 35 cm x 40 cm runs at 1000 r.p.m. The compressor clearance factor is 0.04 and the law of compression pV^1.1=C. the operating pressures for the vapour compression refrigeration system are: 8.47 bar (35⁰C) and 1.004bar (-30⁰C). The refrigerant temperatures are: entering the compressor -20⁰C, leaving the compressor 500C; entering the condenser 45⁰C, leaving the condenser 25⁰C, entering the expansion valve 30⁰C and leaving the evaporator dry saturated. Assuming that heat removed in the compressor is 26 kJ/sec. calculate:

Mass of condensing cooling water assuming the rise in temperature to be 10⁰
Tabulate energy balance for 1 kg of refrigerant

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