Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • M. Schödel
  • M. Menze
  • J. R. Seume
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Details

Original languageEnglish
Title of host publicationProceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
Subtitle of host publicationETC14, April 12-16 2021; Gdansk, Poland
Publication statusPublished - Jan 2021
Event14th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021 - Gdansk, Virtual, Poland
Duration: 12 Apr 202116 Apr 2021

Abstract

In automotive fuel cell drives, electrically driven turbochargers are used to increase system pressure and improve efficiency. Due to the low operating temperature of the polymer electrolyte membrane fuel cell (PEMFC) and the resulting low exhaust gas temperature, the turbine power is not sufficient to drive the compressor. Thus, this paper investigate the potential of efficiency increase when using variable turbine geometries in an experimentally validated numerical study. The variable geometries are analysed in detail. The results of the investigation are compared to the results of a non-variable turbocharger version. The numerical study shows that the use of variable turbine geometries is beneficial in PEMFC air supply systems since the operating range enhancement leads to better coverage of the operating line. In addition, the variable nozzle turbine results in improved efficiency at higher pressure ratios.

Keywords

    Centrifugal Compressor, Fuel Cell Air Supply, Range Extension, Variable Nozzle Turbine, Energy Recovery, Variable Geometry Turbine, Radial Turbine

ASJC Scopus subject areas

Cite this

Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications. / Schödel, M.; Menze, M.; Seume, J. R.
Proceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics: ETC14, April 12-16 2021; Gdansk, Poland. 2021. ETC2021-686.

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Schödel, M, Menze, M & Seume, JR 2021, Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications. in Proceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics: ETC14, April 12-16 2021; Gdansk, Poland., ETC2021-686, 14th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021, Gdansk, Virtual, Poland, 12 Apr 2021. https://doi.org/10.29008/ETC2021-686
Schödel, M., Menze, M., & Seume, J. R. (2021). Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications. In Proceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics: ETC14, April 12-16 2021; Gdansk, Poland Article ETC2021-686 https://doi.org/10.29008/ETC2021-686
Schödel M, Menze M, Seume JR. Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications. In Proceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics: ETC14, April 12-16 2021; Gdansk, Poland. 2021. ETC2021-686 doi: 10.29008/ETC2021-686
Schödel, M. ; Menze, M. ; Seume, J. R. / Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications. Proceedings of 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics: ETC14, April 12-16 2021; Gdansk, Poland. 2021.
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title = "Numerical investigation of a centrifugal compressor with various diffuser geometries for fuel cell applications",
abstract = "In automotive fuel cell drives, electrically driven turbochargers are used to increase system pressure and improve efficiency. Due to the low operating temperature of the polymer electrolyte membrane fuel cell (PEMFC) and the resulting low exhaust gas temperature, the turbine power is not sufficient to drive the compressor. Thus, this paper investigate the potential of efficiency increase when using variable turbine geometries in an experimentally validated numerical study. The variable geometries are analysed in detail. The results of the investigation are compared to the results of a non-variable turbocharger version. The numerical study shows that the use of variable turbine geometries is beneficial in PEMFC air supply systems since the operating range enhancement leads to better coverage of the operating line. In addition, the variable nozzle turbine results in improved efficiency at higher pressure ratios.",
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N1 - Funding Information: The investigations presented in this paper are part of the research project ARIEL. The authors thank the Federal Ministry of Transport and Digital Infrastructure (BMVI) which financially supported the work within the framework of the National Innovation Programme (NIP) Hydrogen and Fuel Cell Technology as well as the NOW GmbH which coordinated the funding guideline. The authors would also like to acknowledge gratefully the entire project consortium consisting of the Volkswagen AG and all the participating institutes of the University of Braunschweig and the Ostfalia University of Applied Sciences.

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