Investigation on waste heat recovery of fuel cell stack cooling system (1st report, proposition of simple dynamic model of steam heat recovery on fuel cell stack cooling system)

Shinji Kimijima, Sunao Kawai, Tsuneo Uekusa, Kazuo Oshima

Research output: Contribution to journalArticle

Abstract

Waste heat recovery of the fuel cell stack cooling system is very important from the viewpoint of effective use of energy. Simultaneously, temperature control of the fuel cell stack is necessary to maintain high electrical efficiency and to prevent the cell stack from oxidation. In phosphoric acid fuel cell system, coolant temperature is controlled to keep constant the temperature of cell stack. The purpose of this paper is to propose the simple dynamic model for designing the temperature control system and heat recovery system of fuel cell stack cooling system. In addtion to this, experimental research and simulation analysis reveal the dynamic characteristics of fuel cell stack cooling system with control equipments. Throughout the resarches, concentrated parameter dynamic model is proposed and the validity of the model is confirmed by experimental results. When the transient response to disturbances such as make-up water pump start up is calculated, it is clarified that the coolant temperature of fuel cell stack can be controlled.

Original languageEnglish
Pages (from-to)3902-3908
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume64
Issue number627
DOIs
Publication statusPublished - 1998 Nov

Keywords

  • Fuel cell
  • Heat exchanger
  • Temperature control
  • Transient response
  • Waste heat recovery

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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