EML 3015C Sample Test #3 Fall 1999
Problem 1: A superheat, reheat Rankine cycle will be designed based on the following conditions: (1) the pressure of the boiler is 8 MPa, (2) The pressure of the reheater at state 4 is 0.8 MPa, (3) The condenser is evacuated to a constant pressure of 0.01 MPa, (4) The qualities of the steam mixture exiting from the high pressure and low pressure turbines are 100% and 90%, respectively. Determine (a) the turbine work (per kg steam), (b) the pump work (per kg), (c) the total heat transfer (per kg), (d) the thermal efficiency, (e) the mass flow rate of the steam if the power output is 80 MW.