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