Suppose a power plant delivers energy at 980 MW using steam turbines. The steam goes into the turbines superheated at 625 K and deposits its unused heat in river water at 285 K. Assume that the turbine operates as an ideal Carnot engine.
(a) If the river flow rate is 37 m3/s, estimate the average temperature increase of the river water immediately downstream from the power plant.
(b) What is the entropy increase per kilogram of the downstream river water in J/kg K?