Air undergoes an Atkinson cycle. The air is compressed adiabatically from 1 bar, 17°C 0 Sbar. The maximum pressure of the cycle is 20 bar. Calculate the work done per leg of gas
the efficiency of the cycle, and the mean effective pressure

Air (c-1.006 kj/kg.k, r-0.287 kj/kg.k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.