A steam power plant operates as a reheat Rankine cycle. Steam enters the high pressure turbine (isentropic efficiency 90%) at 8 Mpa and 500°C and leaves at 3 MPa. Steam is then reheated at a constant pressure at 500°C before it expands to 20Kpa in the low pressure turbine (isentropic efficieny 90%). The exiting stream from the condenser is saturated liquid. Assume that the heat is being added to the bouler from a high temperature source at 1800k and the condenser is transferring heat to a temperature sink at 300K and the pump is isentropic.
Determine:
a) the total work output by turbines KJ/KG
b) thermal efficiency of the cycle
c) exergy destruction from each heat transfer process in the cycle KJ/KG.