An air refrigeration system works on Bell – Coleman cycle. It draws air at the rate of 1 kg/s from the cold chamber at 1 bar and 5°C. Air is compressed to 7 bar and then is cooled to 25°C before sending it to the expansion cylinder. Given γ = 1.4 cp = 1.005 kJ/kg-K and 70.286 = 1.745. The refrigeration effect for this system in tonne per hour, is:
1
15.8
2
30.6
3
3.06
4
1.58