Configuration design and parametric optimum selection of a self-supporting PEMFC

Xiuqin Zhang, Meng Ni, Junyi Wang, Lan Yang, Xingyu Mao, Sunqing Su, Zhimin Yang, Jincan Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

A new theoretical model of the thermally self-sustained proton exchange membrane fuel cell (PEMFC) is proposed, where syngas is preheated by the heat from the reaction in the fuel cell and water gas shift reactions, and the endothermic steam reforming process of methane is maintained by absorbing a part of the combustion heat of residuary hydrogen from the fuel cell. Based on some thermal equilibrium equations, the temperatures of syngas and combustion product in different stages are calculated, respectively. The power density and conversion efficiency of the PEMFC are derived. The influences of the molar flow rate of syngas, hydrogen utilization ratio, and working temperature of the fuel cell on the property of the PEMFC are discussed detailedly. In the rational range of the operating temperature, the maximum power densities and corresponding efficiencies are calculated, the optimum values of several key parameters at the maximum power densities are determined, and the optimal selection criteria of molar flow rate of syngas and other parameters are provided.

Original languageEnglish
Article number113391
JournalEnergy Conversion and Management
Volume225
DOIs
Publication statusPublished - 1 Dec 2020

Keywords

  • Maximum power density
  • Parametric optimum selection
  • Proton exchange membrane fuel cell
  • Self-supporting operation
  • Steam reforming

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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