A rotary air compressor is required to deliver 900 kg of air per hour. The enthalpy of the air at inlet and exit of the compressor are 300 kJ/kg and 500 kJ/kg respectively. The air velocity at the entrance and exit are 10 m/s and 15 m/s respectively. The rate of heat loss from the compressor is 2500 W. Determine the power required to drive the compressor.