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Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autorschaft

  • M. Schoedel
  • P. Nachtigal
  • J. R. Seume

Details

OriginalspracheEnglisch
Titel des SammelwerksProceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
Seiten14
PublikationsstatusVeröffentlicht - 2021
Veranstaltung15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023 - Budapest, Ungarn
Dauer: 24 Apr. 202328 Apr. 2023

Publikationsreihe

NameEuropean Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC
ISSN (Print)2313-0067
ISSN (elektronisch)2410-4833

Abstract

This study presents first-time experimental investigations of an electric turbocharger for the fuel cell air supply with different range-extending features in the centrifugal compressor. Experiments show the potential of pivoting the diffuser vanes: The surge margin of the compressor increases by up to 44.7 percentage points. This can be used to adapt the compressor map to the operating range requirements of an automotive fuel cell. However, due to efficiency losses, the compressor power consumption increases when the fuel cell is operated at full-load. Further experiments with different leading edge angles of the diffuser vanes demonstrate that the map of the centrifugal compressor can be shifted towards lower mass flow rates even by a fixed-geometry diffuser. While the original compressor can only cover 68 percent of the total fuel cell's operating range with a surge margin of 20 percent, a compressor with adapted leading edge angles of the diffuser vanes covers over 75.7 percent. By linearly reducing the leading edge angle over the vane height, the compressor power consumption decreases over the entire operating range of the fuel cell. A reduced power consumption of up to 6.3 percent is achieved at part-load.

ASJC Scopus Sachgebiete

Zitieren

Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes. / Schoedel, M.; Nachtigal, P.; Seume, J. R.
Proceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. 2021. S. 14 ETC2023-112 (European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Schoedel, M, Nachtigal, P & Seume, JR 2021, Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes. in Proceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics., ETC2023-112, European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC, S. 14, 15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023, Budapest, Ungarn, 24 Apr. 2023. <https://www.euroturbo.eu/paper/ETC2023-112.pdf>
Schoedel, M., Nachtigal, P., & Seume, J. R. (2021). Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes. In Proceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics (S. 14). Artikel ETC2023-112 (European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC). https://www.euroturbo.eu/paper/ETC2023-112.pdf
Schoedel M, Nachtigal P, Seume JR. Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes. in Proceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. 2021. S. 14. ETC2023-112. (European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC).
Schoedel, M. ; Nachtigal, P. ; Seume, J. R. / Experimentally Validated Improvements Of A Cathode Air Compressor For Pem Fuel Cells By Fixed Diffuser Vanes. Proceedings of the 15th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. 2021. S. 14 (European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC).
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abstract = "This study presents first-time experimental investigations of an electric turbocharger for the fuel cell air supply with different range-extending features in the centrifugal compressor. Experiments show the potential of pivoting the diffuser vanes: The surge margin of the compressor increases by up to 44.7 percentage points. This can be used to adapt the compressor map to the operating range requirements of an automotive fuel cell. However, due to efficiency losses, the compressor power consumption increases when the fuel cell is operated at full-load. Further experiments with different leading edge angles of the diffuser vanes demonstrate that the map of the centrifugal compressor can be shifted towards lower mass flow rates even by a fixed-geometry diffuser. While the original compressor can only cover 68 percent of the total fuel cell's operating range with a surge margin of 20 percent, a compressor with adapted leading edge angles of the diffuser vanes covers over 75.7 percent. By linearly reducing the leading edge angle over the vane height, the compressor power consumption decreases over the entire operating range of the fuel cell. A reduced power consumption of up to 6.3 percent is achieved at part-load.",
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note = "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. Finally, the authors would like to thank the FISCHER Fuel Cell Compressor AG for providing the electric turbochargers for the experimental investigations and technical support during the measurement campaigns. ; 15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023 ; Conference date: 24-04-2023 Through 28-04-2023",
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KW - VANED DIFFUSER

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