Steam enters the turbine of a vapor power plant at 600 lbf/ in.2, 10008F and exits as a two-phase liquid-vapor mixture at temperature T. Condensate exits the condenser at a temperature 58F lower than T and is pumped to 600 lbf/in.2 The turbine and pump isentropic efficiencies are 90 and 80%, respectively. The net power developed is 1 MW.
(a) For T 5 808F, determine the steam quality at the turbine exit, the steam mass flow rate, in lb/h, and the thermal efficiency.
(b) Plot the quantities of part (a) versus T ranging from 80 to 1058F.