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Optimisation of Electrolyser Operation: Integrating External Heat

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  • Matthias Derez
  • Alexander Hoogsteyn
  • Erik Delarue

Abstract

Integrating external heat into electrolysers can reduce the electrical power demand for carbon-neutral hydrogen production. Efficient operation requires detailed models that incorporate heat availability and its effect on startup costs. This paper advances existing operational models by endogenously modelling startup costs and direct heat integration, based on a piecewise linear approximation of the electrochemical equations. We analyse the impact of low- and high-temperature heat integration on the efficiency and profitability of hydrogen production for solid oxide and proton exchange membrane electrolysis technologies.

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  • Matthias Derez & Alexander Hoogsteyn & Erik Delarue, 2025. "Optimisation of Electrolyser Operation: Integrating External Heat," Papers 2507.06796, arXiv.org.
    • Handle: RePEc:arx:papers:2507.06796
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    File URL: http://arxiv.org/pdf/2507.06796
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