Question

List 3 options to improve the efficiency of a combined cycle power plant with a conventional triple pressure steam cycle and identify the primary advantages and disadvantages of each. Improvements can either be based on first or second law efficiencies.

Answer 1

1) Increase the rotary engine body of water temperature provided the
turbine materials will stand the temperature or one has
access to replacement components which will face up to the
temperatures.
2) Increase the pressure quantitative relation. there's a limit to the
efficiency increase relying upon the rotary engine body of water
temperature. One will concievably increase the pressure
ratio to some extent that the inflated work isn't recovered
because the enlargement across the rotary engine is insufficient to
recover the work. Also, this may seemingly need a brand new
compressor though some work was worn out the past
involving "supercharging" the mechanical device with a blower.
3) Power augmentation through steam injection.
4) On rotary engines with HP and platter turbine separated, apply
reheat.