Article,

Multicomponent Working Fluids For Organic Rankine Cycles (ORCs)

, and .
Energy, 23 (6): 449 - 463 (1998)
DOI: 10.1016/S0360-5442(98)00009-7

Abstract

We have evaluated the merits of organic-fluid mixtures as working media for Rankine power cycles. Non-isothermal phase change both at high and low temperature represents the main advantage with respect to pure fluids. StanMix, a computer code using the Wong and Sandler (WS) mixing rules, integrated into a commercial package, is employed for cycle analysis and optimisation. Heat recovery and geothermal applications using mixtures of siloxanes and hydrocarbons, respectively, are illustrated. We demonstrated that optimal selection of working-fluid composition is a powerful tool for an efficient ØRC\ design.

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