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

José Galindo, Vicente Dolz, Lucía Royo-Pascual, Regine Haller and Julien Melis
Additional contact information
José Galindo: CMT-Motores Térmicos, Polytechnic University of Valencia, 6D Building, Camino de Vera s/n, Valencia 46022, Spain
Vicente Dolz: CMT-Motores Térmicos, Polytechnic University of Valencia, 6D Building, Camino de Vera s/n, Valencia 46022, Spain
Lucía Royo-Pascual: CMT-Motores Térmicos, Polytechnic University of Valencia, 6D Building, Camino de Vera s/n, Valencia 46022, Spain
Regine Haller: Valeo Systèmes Thermiques, 8, rue Louis Lormand, La Verrière 78321, France
Julien Melis: Exoès S.A.S., 6, avenue de la Grande Lande, Gradignan 33170, France

Energies, 2016, vol. 9, issue 4, 1-18

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.

Keywords: organic Rankine cycle (ORC); waste heat recovery (WHR); internal combustion engine (ICE); swash-plate; ethanol; modeling; thermal inertia (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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