Air is compressed steady by a 20-kW compressor from 100 kPa and 27 to 800 and 197kPa and 197 at a rate of 4.2 kg/min. During this process, some heat transfer takes place between the compressor and the surrounding medium at 27. Gas constant for air is 0.287 kj/kg.K.
a) The specific enthalpies of the air at the inlet and outlet of the compressor?
b) The heat loss by the compressor to the surrounding?
c) The s of the air at the inlet and outlet of the compressor?
d) The specific entropy change of the air from inlet to outlet?
e) The total entropy change of the air in the compressor?
f) The total entropy generation of the process?