500 kg/hr of steam drives turbine. the steam enters the turbine at 44 atm and 450 C at a velocity of 60 m/sec and leaves at point 5 m below the turbine inlet at atmospheric pressure and velocity of 360 m/sec. the turbine drives shaft work at a rate of 70 kW, and heat loss from the turbine is estimated to be 11.6 kW. Calculate the specific enthalpy change associated with the process