3.500 kg/h of steam drives a turbine. The steam enters at a linear velocity of 60 m/s and leaves at a point 5 m below the turbine inlet at a velocity of 360 m/s. The turbine produces 70 kW of power via this gas expansion. Heat loss to the surroundings is 10,000 kcal/h. Calculate the difference in enthalpy between the inlet and outlet streams. (ANS: - 650 kJ/kg)