In: Mechanical Engineering
a steam power plant operates on a superheated rankine cycle where steam at 10kg/s entering the turbine at 5MPa and 375 degree celcius and leaving the turbine at saturated vapor at pressure 100 times less then initial. If the compressor efficiency is 85% ,
I) sketch the cycle of T-s diagram
ii) calculate the temperature and pressure for all points in the cycle
iii) calculate the compressor work
iv) calculate the turbine work and turbine efficiency
v.) calculate the thermal efficiency of the cycle
vi) if the efficiency of turbine and compressor is 100%;
a) is there any changes in temperature of the steam leaving the compressor and turbine? why?
b) Is there is any changes in the thermal efficiency of the cycle? prove the statement