A large, uninsulated steam turbine receives superheated steam at 40.0 lbm/s, 1000.°F, and 800. psia and exhausts it to 1.00 psia with a quality of 92.0%. If the turbine is assumed to be internally reversible, determine the heat loss from the surface of the turbine if the power output is 30.0 × 103 kW.
The surface temperature of the turbine is uniform at 225°F and the local environment (ground state) is saturated liquid water at 20.0°C. Neglect all flow stream kinetic and potential energies in this problem.