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ORC技術を活用した再生可能水素製造効率の向上と産業脱炭素化

Leveraging ORC technology to enhance renewable hydrogen production efficiency and industrial decarbonization (原題)

Mitkidis, Georgios, Giannissi, Stella G., Borchert-Wright, Lisa, Aumann, Richard, Skordoulias, Nikolaos, Karellas, Sotirios

Zenodoプレプリント2026-11-09#水素Origin: EU経営インパクト: コスト削減対象セクター: power
DOI: 10.5281/zenodo.24079284
原典: https://zenodo.org/records/24079284
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🤖 gxceed AI 要約

日本語

EUのEPHYRAプロジェクトの一環として、精油所のアルカリ水電解（AEL）システムに有機ランキンサイクル（ORC）廃熱回収を統合する研究。電解液ループからの直接熱回収と、水素化脱硫（HDS）装置の廃熱を利用した間接的なゼロカーボン電力供給の2構成を評価する。産業共生と大規模再生可能水素製造の実証を目指す。

English

This study integrates Organic Rankine Cycle (ORC) waste heat recovery into an industrial alkaline electrolysis (AEL) system at a refinery, under the EU EPHYRA project. Two configurations are evaluated: direct ORC coupling with the electrolyser and indirect coupling using medium-temperature refinery waste heat to generate zero-carbon electricity for the electrolyser. The work aims to demonstrate large-scale renewable hydrogen production and industrial symbiosis.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本では水素製造の低コスト化と産業脱炭素化が政策課題であり、廃熱回収による水素製造効率向上は国内の水素戦略やGX推進に示唆を与える。特に精油所での産業共生モデルは参考になる。

In the global GX context

This paper contributes to the global discourse on industrial decarbonization and renewable hydrogen production, aligning with EU climate goals and the Clean Hydrogen Partnership. It offers empirical insights into waste heat recovery integration, relevant for transition finance and industrial symbiosis frameworks under ISSB/CSRD.

👥 読者別の含意

🔬研究者:Provides a case study on ORC integration configurations for improving electrolysis efficiency in industrial settings.

🏢実務担当者:Demonstrates how refineries can recover waste heat to reduce hydrogen production costs and carbon footprint.

🏛政策担当者:Highlights the role of EU-funded projects in advancing industrial symbiosis and renewable hydrogen deployment.

📄 Abstract（原文）

This study investigates the integration of waste heat recovery through Organic Rankine Cycle (ORC) technology in an industrial alkaline electrolysis (AEL) system within a refinery environment. The work is conducted under the EU-funded EPHYRA project, which aims to demonstrate large-scale renewable hydrogen production and industrial symbiosis. Two configurations are evaluated: (i) direct coupling of the ORC with the electrolyser to recover heat from the electrolyte loop and (ii) indirect coupling, where the ORC exploits medium-temperature waste heat from refinery processes, such as Ηydrodesulfurisation (HDS) unit rundown streams, to generate zero carbon electricity that can be supplied virtually to the electrolyser.  The project is supported by the Clean Hydrogen Partnership and its members under the GA 101112220. Co-funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the Clean Hydrogen Partnership. Neither the European Union nor the granting authority can be held responsible for them.

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