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Novel anode recirculation blower for PEM fuel cells

  • P. Nachtigal*
  • , S. Gößling
  • , H. Schuemie
  • , T. Kentschke
  • , F. Smyrek
  • , M. Szesny
  • , B. Yang
  • , C. Klunker
  • , J. R. Seume
  • *Corresponding author for this work

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

Abstract

A novel hydrogen recirculation blower (HRB) for PEM fuel cells has been developed and tested with different gas mixtures of hydrogen and nitrogen. The blower is based on a centrifugal turbo compressor driven by a special electric motor: the media gap motor. This motor concept provides hermetic separation of the fluid. The achievable mass flow rate and pressure ratio of the blower are a function of the fluid properties, which change dynamically during operation of the fuel cell system. The continuous change in the pressure ratio can be calculated using the conventional characteristic numbers of turbomachines Ψ and φ, and following the laws of Mach-number similarity. This approach is implemented for the first time in a fuel cell system simulation model to study the behavior of the HRB dynamically. It can be shown that the operation of the HRB can be predicted using the model. The new recirculation blower can achieve very efficient recirculation throughout the operating range when a WLTC drive cycle is performed using a 100kW Stack. Dynamic operating point changes and purge cycles are also possible.

Original languageEnglish
Title of host publication14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
Number of pages12
DOIs
Publication statusPublished - 2023
Event15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023 - Budapest, Hungary
Duration: 24 Apr 202328 Apr 2023

Publication series

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

Conference

Conference15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023
Country/TerritoryHungary
CityBudapest
Period24 Apr 202328 Apr 2023

Keywords

  • CENTRIFUGAL COMPRESSOR
  • FUEL CELL
  • HYDROGEN
  • MEDIA GAP MOTOR
  • RECIRCULATION

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

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