A two stage air compressor with ideal intercooler pressure and perfect intercooling (what does this mean?) compresses air from 1 bar to 16 bar at the rate of 5 m3/min. Mechanical efficiency of the compressor is 80%. Assume polytropic compression and expansion (n=1.3). Calculate: a) the power consumption, b) volumetric efficiency when the clearance volume of the LP cylinder is 3% of its stroke volume, and c) power consumption for an equivalent single stage compressor