Calculate the power required to drive the compressor.

Air flows steadily at the rate of 0.4kg/s through an air compressor, entering at 6 m/s with a pressure of 100kPa and a specific volume of 0.85m3/kg. The air exits at 4.5m/s with a pressure of 690kPa and a specific volume of 0.16m3/kg. The specific internal energy of the air leaving is 88kJ/kg greater than that of the air entering. Cooling water in the jacket surrounding the cylinder absorbs heat from the air at the rate of 59kJ/s. Calculate