Question

A refrigerating machine of 10 tones capacity working on Bell-Coleman cycle has an upper
limit of pressure of 5.5 bar. The pressure and temperature at the start of the compression are
1.0 bar and 10°C respectively. The compressed air is cooled at constant pressure to a
temperature of 35°C and then enters the expansion cylinder. Assuming both expansion and
compression processes to be adiabatic with y=1.4, Determine: (i) Co-efficient of performance,
(ii) Quantity of air in circulation per minute and (iii) Power required to drive the unit. The unit
runs at 240 r.p.m. and is double acting. For air take y=1.4 and cp=1.005 kJ/kg K.​

Answer 1

Answer:

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Answer 2

Answer:

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