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Session: Poster session and Ouzo tasting in room Kallirhoe
Session starts: Monday 09 September, 17:20

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Marija Lazova ()
Steven Lecompte ()
Michael de Paepe ()

Abstract:
Heat exchangers are components of high importance for the proper operation of the organic Rankine cycles (ORC’s). Furthermore, the efficiency of the trans-critical ORC’s can be improved by acquiring supercritical heat transfer in the heat exchanger at the hot side. However, heat transfer correlations for designing heat exchangers suitable to operate under these conditions are lacking. Therefore, heat transfer experiments at supercritical state of the working fluid R125 were conducted on the novel test set-up. The test section is a tube-in-tube heat exchanger with a diameter of the inner tube of 28.6mm and is horizontally positioned. Experiments were conducted at various mass fluxes and the pressure was in the range of 1.05