A steam power plant working on ideal rankine cycle has condenser exit pressure 40 kPa. The temperature and pressure of water after passing through pump is found to be 60oC and 5,000 kPa respectively. Analyze the effect of changing boiler temperature on thermal efficiency of plant for the following exit steam temperatures of the boiler.
a) Steam temperature 600oC
b) Steam temperature 450oC
Conclude your answer with the help of T-s diagram