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Energies 2016, 9(4), 279; doi:10.3390/en9040279

Modeling and Experimental Validation of a Volumetric Expander Suitable for Waste Heat Recovery from an Automotive Internal Combustion Engine Using an Organic Rankine Cycle with Ethanol

1
CMT-Motores Térmicos, Polytechnic University of Valencia, 6D Building, Camino de Vera s/n, Valencia 46022, Spain
2
Valeo Systèmes Thermiques, 8, rue Louis Lormand, La Verrière 78321, France
3
Exoès S.A.S., 6, avenue de la Grande Lande, Gradignan 33170, France
Part of this work has been presented in 3rd International Seminar on ORC Power Systems, Brussels, Belgium, 12–14 October 2015.
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Sylvain Quoilin
Received: 19 January 2016 / Revised: 30 March 2016 / Accepted: 31 March 2016 / Published: 9 April 2016
View Full-Text   |   Download PDF [6971 KB, uploaded 9 April 2016]   |  

Abstract

Waste heat recovery (WHR) in exhaust gas flow of automotive engines has proved to be a useful path to increase the overall efficiency of internal combustion engines (ICE). Recovery potentials of up to 7% are shown in several works in the literature. However, most of them are theoretical estimations. Some present results from prototypes fed by steady flows generated in an auxiliary gas tank and not with actual engine exhaust gases. This paper deals with the modeling and experimental validation of an organic Rankine cycle (ORC) with a swash-plate expander integrated in a 2 L turbocharged petrol engine using ethanol as working fluid. A global simulation model of the ORC was developed with a maximum difference of 5%, validated with experimental results. Considering the swash-plate as the main limiting factor, an additional specific submodel was implemented to model the physical phenomena in this element. This model allows simulating the fluid dynamic behavior of the swash-plate expander using a 0D model (Amesim). Differences up to 10.5% between tests and model results were found. View Full-Text
Keywords: organic Rankine cycle (ORC); waste heat recovery (WHR); internal combustion engine (ICE); swash-plate; ethanol; modeling; thermal inertia organic Rankine cycle (ORC); waste heat recovery (WHR); internal combustion engine (ICE); swash-plate; ethanol; modeling; thermal inertia
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Galindo, J.; Dolz, V.; Royo-Pascual, L.; Haller, R.; Melis, J. Modeling and Experimental Validation of a Volumetric Expander Suitable for Waste Heat Recovery from an Automotive Internal Combustion Engine Using an Organic Rankine Cycle with Ethanol. Energies 2016, 9, 279.

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