An air-standard cycle with constant specific heats is executed in a closed piston-cylinder system and is composed of the following three processes:
1.2 Isentropic compression with a compression ratior =6,T1, = 27°C, andP1, = 100 kPa
2-3 Constant pressure heat addition
3-1 Constant volume heat rejection
Assume air has constant properties withcv = 0.718 kJ/kg•K,cp= 1.005 kJ/kg•K,R= 0.287 kJ/kg•K, andk =1.4.
(a)Sketch theP-VandT-sdiagrams for this cycle.
(b)Determine the back work ratio for this cycle.
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