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Journal of Applied Electrochemistry

, Volume 29, Issue 9, pp 1079–1084 | Cite as

High temperature electrochemical heat pump using water gas shift reaction. Part I: Theoretical considerations

  • A. Ishihara
  • N. Motohira
  • K. Ota
  • N. Kamiya
Article

Abstract

A new electrochemical heat pump using a combination of an electrolytic reaction at lower temperature to absorb low grade thermal energy and a thermochemical reaction at higher temperature to produce more efficient thermal energy is proposed. At a lower temperature, an endothermic reaction which cannot occur thermochemically proceeds with electrolysis. At a higher temperature, an exothermic reaction which is the reverse of the electrolysis reaction occurs thermochemically to produce high grade thermal energy. The water gas shift reaction, CO2(g) + H2(g) ⇌ CO(g) + H2O(g), in molten carbonate is one possible candidate for the new electrochemical heat pump and can lead to an increase in the temperature of the thermal energy from 1100 to 1200 K. A heat pump system using the shift reaction is also considered theoretically.

energy conversion electrochemical heat pump molten carbonate thermodynamics water gas shift reaction 

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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • A. Ishihara
    • 1
  • N. Motohira
    • 1
  • K. Ota
    • 1
  • N. Kamiya
    • 1
  1. 1.Department of Energy & Safety EngineeringYokohama National UniversityHodogaya-ku, YokohamaJapan

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