MCQ
Regenerative cycle thermal efficiency is
Options
A) Same as simple Rankine cycle efficiency
B) always greater than simple Rankine cycle efficiency
C) always smaller than simple Rankine cycle efficiency
D) None of these
Correct answer : option B ( solution discussed below)
Solution
In Regenerative cycle some heat is extracted from turbine and this heat is used for preheating the feed water. So feed water temperature is increased.
Thats why boiler required less heat for conversion of feed water into steam, so efficiency of regenerative cycle is always greater than simple Rankine cycle thermal efficiency.
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