Selecting the best design options for turbo-expanders to be used in Organic Rankine Power Cycle applications is a difficult task, with special reference to the low-temperature applications (T < 150 C) which are relevant for specific fields in rapid development (geothermal binary plants, solar thermal energy conversion systems). A wide literature exists on the optimal selection of the working fluid from the thermodynamic point of view; while the fluid dynamics design is often based on the direct application of CFD techniques, without a preliminary screening on the issues of application of a specific working fluid. In practice, however, the selection of the working fluid has relevant effects both on the cycle thermodynamics and on the fluid dynamic losses and turbo-expander efficiency. Referring to a radial-type turboexpander, a comparison of different working fluids is presented and discussed.

Thermo-fluid dynamics preliminary design of turbo-expanders for ORC cycles / D.Fiaschi;Giampaolo Manfrida;F.Maraschiello. - In: APPLIED ENERGY. - ISSN 0306-2619. - ELETTRONICO. - 97:(2012), pp. 601-608. [10.1016/j.apenergy.2012.02.033]

Thermo-fluid dynamics preliminary design of turbo-expanders for ORC cycles

FIASCHI, DANIELE;MANFRIDA, GIAMPAOLO;MARASCHIELLO, FRANCESCO
2012

Abstract

Selecting the best design options for turbo-expanders to be used in Organic Rankine Power Cycle applications is a difficult task, with special reference to the low-temperature applications (T < 150 C) which are relevant for specific fields in rapid development (geothermal binary plants, solar thermal energy conversion systems). A wide literature exists on the optimal selection of the working fluid from the thermodynamic point of view; while the fluid dynamics design is often based on the direct application of CFD techniques, without a preliminary screening on the issues of application of a specific working fluid. In practice, however, the selection of the working fluid has relevant effects both on the cycle thermodynamics and on the fluid dynamic losses and turbo-expander efficiency. Referring to a radial-type turboexpander, a comparison of different working fluids is presented and discussed.
2012
97
601
608
D.Fiaschi;Giampaolo Manfrida;F.Maraschiello
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/639908
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