An analysis of the immiscible liquid binary Rankine cycle using aqueous/perfluorocarbon binaries has been carried out. Six such binaries have been studied and it has been shown that the cycle is characterized principally by the volatility of its organic component. The cycle performance has been compared with that of promising pure organic working fluid cycles. Although having generally lower efficiency than the optimum organic pure fluid cycle, practical considerations may favour the binary cycle at the bottom end of the Rankine cycle power range.
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