Air enters a compressor insulated against heat transfer at 37°C and 105kPa pressure and exits at 610 kPa and 287°C. Neglecting the change of kinetic and potential energy and also taking into account that specific heats change with temperature;

a) Find the isentropic efficiency of the compressor,

b) If the compression is reversible, find the outlet temperature of the air.

Let T1= inlet temperature to compressor= 37 Deg.c= 37+273.15=310.15K

T2= outlet temperature from compressor = 287 Deg.c= 287+273.15= 560.15K

P1= pressure at the inlet of compressor= 105Kpa

P2= Pressure at the discharge of compressor = 610KPa

R= gas constant = 8.314 J/mole.K