2025/07/09 by Matthias Derez, Derez, Matthias, Alexander Hoogsteyn +3
Energy · Engineering · #CO2 Reduction Techniques and Catalysts #Chemical Physics (physics.chem-ph) #FOS: Economics and business #FOS: Physical sciences #General Economics (econ.GN) #Hybrid Renewable Energy Systems #Integrated Energy Systems Optimization #Materials Science (cond-mat.mtrl-sci)
paper · pdf · doi:10.48550/arxiv.2507.06796
openalex publication_date 2025/07/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.