Eur. Phys. J. Appl. Phys.
Volume 78, Number 3, June 2017
Materials for Energy harvesting, conversion and storage II (ICOME 2016)
|Number of page(s)||11|
|Section||Physics of Energy Transfer, Conversion and Storage|
|Published online||14 June 2017|
Analysis and optimization of three main organic Rankine cycle configurations using a set of working fluids with different thermodynamic behaviors*
Unité de Recherche énergétique et Environnement, Ecole Nationale d'Ingénieurs de Tunis, Univeristé de Tunis El Manar, BP 37 Le Belvédère 1002 Tunis, Tunisie
2 LEMTA, UMR CNRS 7563, Université de Lorraine, 2 avenue de la Forêt de Haye, 54500 Vandœuvre-lès-Nancy, France
a e-mail: firstname.lastname@example.org
Revised: 4 May 2017
Accepted: 9 May 2017
Published online: 14 June 2017
Different configurations of organic Rankine cycle (ORC) systems are potential thermodynamic concepts for power generation from low grade heat. The aim of this work is to investigate and optimize the performances of the three main ORC systems configurations: basic ORC, ORC with internal heat exchange (IHE) and regenerative ORC. The evaluation for those configurations was performed using seven working fluids with typical different thermodynamic behaviours (R245fa, R601a, R600a, R227ea, R134a, R1234ze and R1234yf). The optimization has been performed using a genetic algorithm under a comprehensive set of operative parameters such as the fluid evaporating temperature, the fraction of flow rate or the pressure at the steam extracting point in the turbine. Results show that there is no general best ORC configuration for all those fluids. However, there is a suitable configuration for each fluid.
© EDP Sciences, 2017
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