Details
| Original language | English |
|---|---|
| Title of host publication | 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics |
| Publication status | Published - 2021 |
| Event | 14th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021 - Gdansk, Virtual, Poland Duration: 12 Apr 2021 → 16 Apr 2021 |
Publication series
| Name | European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC |
|---|---|
| ISSN (Print) | 2313-0067 |
| ISSN (electronic) | 2410-4833 |
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
- Energy Recovery, Fuel Cell Air Supply, Radial Turbine, Variable Geometry Turbine, Variable Nozzle Turbine
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Mechanics of Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. 2021. (European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC).
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Numerical Invstigation Of A Radial Turbine With Variable Nozzle Geometry For Fuel Cell Systems In Automotive Applications
AU - Menze, M.
AU - Schoedel, M.
AU - Seume, J. R.
N1 - Funding Information: The investigations presented in this paper are part of the research project ARIEL. The authors would like to 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 NOW GmbH which coordinated the funding programme. The authors would also like to acknowledge gratefully the entire project consortium consisting of Volkswagen AG and all the participating institutes at the University of Braunschweig and the Ostfalia University of Applied Sciences.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Energy Recovery
KW - Fuel Cell Air Supply
KW - Radial Turbine
KW - Variable Geometry Turbine
KW - Variable Nozzle Turbine
UR - http://www.scopus.com/inward/record.url?scp=85177652473&partnerID=8YFLogxK
M3 - Contribution to book/anthology
AN - SCOPUS:85177652473
T3 - European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC
BT - 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
T2 - 14th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021
Y2 - 12 April 2021 through 16 April 2021
ER -