Comparative performance assessment of a solar thermal organic Rankine cycle-driven alkaline electrolyzer for green hydrogen production
太陽熱有機ランキンサイクル駆動アルカリ電解槽によるグリーン水素製造の比較性能評価 (AI 翻訳)
Mohammad Alrbai, Hamzeh M. Duwairi, M. Hussein, B. Shboul, Muhmmad Saeed
🤖 gxceed AI 要約
日本語
本研究は、太陽熱集熱器と有機ランキンサイクル（ORC）を組み合わせたアルカリ電解槽によるグリーン水素製造システムの性能を比較評価した。8つの構成を年間ベースで動的にシミュレーションし、最適構成（パラボリックトラフ集熱器、R245fa作動流体、180m²集熱面積、8m³蓄熱槽）で年産752.8kgの水素、太陽光から水素への総合効率7.03%を達成。高温蓄熱の重要性と本方式の実現可能性を示した。
English
This study compares the performance of a solar thermal ORC-driven alkaline electrolyzer for green hydrogen production. Dynamic simulation of eight configurations over one year identifies the optimal setup: parabolic trough collectors with R245fa, achieving 752.8 kg H2/year and 7.03% solar-to-hydrogen efficiency. Results highlight the critical role of thermal storage in enhancing hydrogen yield and demonstrate viability for sunny regions.
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
本論文は、日本の水素基本戦略やGX政策において注目されるグリーン水素製造の一手法を提案する。太陽熱利用は日本でも高日射地域で可能性があるが、実証規模でのコスト評価や地域適合性の検討が今後の課題となる。
In the global GX context
This paper contributes to the global push for green hydrogen by demonstrating a solar thermal ORC-electrolyzer system that avoids reliance on fossil fuels or conventional PV. It offers a detailed comparative methodology and performance benchmarks valuable for system design in high-insolation regions, aligning with global hydrogen ramp-up goals.
👥 読者別の含意
🔬研究者:The dynamic simulation framework and comparative configuration analysis provide a methodological template for further optimization studies.
🏢実務担当者:Engineers can use the performance benchmarks and optimal configuration (parabolic trough, R245fa, 180 m² collector, 8 m³ storage) for preliminary system design.
🏛政策担当者:The demonstrated solar-to-hydrogen efficiency of 7% supports policy incentives for solar thermal hydrogen production in suitable climates.
📄 Abstract（原文）
Green hydrogen is recognized as a critical energy carrier for deep decarbonization, yet many production pathways remain reliant on fossil fuels or conventional photovoltaic electrolysis. This study presents a comparative performance assessment of a solar thermal-driven hydrogen production system integrating an organic Rankine cycle (ORC) with an alkaline electrolyzer. The proposed configuration comprises solar thermal collectors, a pressurized sensible heat storage tank, an ORC power unit, and an electrolyzer. A dynamic MATLAB-based simulation framework was developed to evaluate eight system configurations under identical meteorological conditions over a full year of hourly operation. The investigated scenarios examined the combined effects of collector technology (evacuated tube vs. parabolic trough), ORC working fluids (R245fa and n-pentane), and system sizing parameters. Performance was assessed based on annual hydrogen yield, overall solar-to-hydrogen efficiency, and productivity per unit collector area. The optimal configuration—employing parabolic trough collectors, an R245fa working fluid, a 180 m 2 collector field, and an 8 m 3 storage tank—achieved an annual hydrogen production of 752.8 kg·year − 1 (4.705 kg·m − 2 ·year − 1 ), corresponding to 25,094 kWh·year − 1 of hydrogen energy output. The overall solar-to-hydrogen efficiency reached 7.03%, with a solar-to-ORC efficiency of 10.2%. Results underscore the critical role of thermal availability and storage stability in enhancing ORC operating hours and hydrogen yield, demonstrating the viability of solar thermal ORC–electrolyzer systems for sustainable hydrogen production in high-insolation regions.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1177/01445987261446385first seen 2026-05-15 19:29:42
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