Air passes through a gas turbine system at a rate of 4.5kg/s. It enters with a velocity of 150m/s and a specific enthalpy of 3000kJ/kg. At exit, the velocity is 120m/s and the specific enthalpy is 2300kJ/kg. The air has a heat loss to the surroundings of 35kJ/kg as it passes through the turbine. Determine the power developed by the turbine.