Question

Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lb_f/in² and 1000°F. The condenser pressure is 2 lb_f/in.² The net power output of the cycle is 350 MW. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser.

a) Determine the mass flow rate of steam, in lb/h.

b) The rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator
c) The thermal efficiency
d) The mass flow rate of cooling water, in lb/h

Answer 1

Answer :

a) mass mass rate of steam = 2.144 * 10⁶ lb/h

b) rate of heat transfer = 2.991 * 10⁹ Btu/h

c) thermal efficiency = 39.79 %

d) mass flow rate of cooling water = 1.125 * 10⁸  lb/h

Explanation :

1. ​​​​​​​