Write the expression for the adiabatic efficiency of a compressor. the stagnation pressure ratio across an axial flow compressor is measured to be 16 and the stagnation enthalpy ratio is measured to be 3. by assuming that (γ-1)/γ is approximately equal to ¼, estimate the value of the adiabatic efficiency

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?