Repeat Prob. 10-20E assuming an isentropic efficiency of 85 percent for both the turbine and the pump.
Prob. 10-20E
A steam power plant operates on a simple ideal Rankine cycle between the pressure limits of 1250 and 2 psia. The mass flow rate of steam through the cycle is 75 lbm/s. The moisture content of the steam at the turbine exit is not to exceed 10 percent. Show the cycle on a T-s diagram with respect to saturation lines, and determine
(a) The minimum turbine inlet temperature,
(b) The rate of heat input in the boiler, and
(c) The thermal efficiency of the cycle.