Question
Download Solution PDFFor two cycles coupled in series, the topping cycle has an efficiency of 30% and the bottoming cycle has an efficiency of 20%. The overall combined cycle efficiency is
Answer (Detailed Solution Below)
44%
Detailed Solution
Download Solution PDF\(1 - \frac{{{Q_2}}}{{{Q_1}}} = 0.3\)
\(\to \frac{{{Q_2}}}{{{Q_1}}} = 0.7\)
\(1 - \frac{{{Q_3}}}{{{Q_2}}} = 0.2\)
\(→Q_3/Q_2 = 0.8\)
Combined cycle efficiency = \(\frac{{{W_A} + {W_B}}}{{{Q_1}}}\)
\(= 1 - \frac{{{Q_3}}}{{{Q_1}}} = 1 - \frac{{\frac{{{Q_3}}}{{{Q_2}}}}}{{\frac{{{Q_1}}}{{{Q_2}}}}}\) = 1 – 0.7×0.8 = 0.44 or 44%
Last updated on Jun 23, 2025
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