If Q1, is heat transferred to the working fluid and Q2, is heat rejected from the working fluid, then the efficiency of the vapour power cycle is
1
\({\eta_{cycle}}={{1}-{{Q_1}\over {Q_2}}}\)
2
\({\eta_{cycle}}={{1}+{{Q_1}\over {Q_2}}}\)
3
\({\eta_{cycle}}={{1}-{{Q_2}\over {Q_1}}}\)
4
\({\eta_{cycle}}={{1}+{{Q_2}\over {Q_1}}}\)
5
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