Answer / pal

efficiency of a rankine cycle can be increase with two ways.

1)increase the upper temparature
2)decrease the lower temparature.

Lot of experiment says the second way is the most effective way as ɳ=1-(T2/T1).
In winter the lower temp is low than in summer.
Thus the efficiency increases.

Answer / ns satyaraj

in rankine cycle lower temperature is of condenser which is constant in both seasons but question is for combine cycle where atmospherc air is compressed and heat is added in combustion chamber and gases are expanded in gas turbine. here since density of air is more in winter than in summer so compresser has to do less work so efficiency is more

Answer / sohail

in Rankine cycle , lower temperature is of condenser which
is constant in both seasons, then how efficiency increase ?
what effect on brayton cycle ?

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