OPTIMIZATION OF RENEWABLE ENERGY-BASED ALKALINE ELECTROLYSIS SYSTEMS FOR SUSTAINABLE HYDROGEN PRODUCTION
持続可能な水素製造のための再生可能エネルギーを基盤としたアルカリ水電解システムの最適化 (AI 翻訳)
S. Bakhramov
🤖 gxceed AI 要約
日本語
本論文は、太陽光発電を用いたアルカリ水電解による水素製造システムの最適化を包括的に検討。電解質濃度、温度、電流密度の影響を実験的に解析し、太陽光-水素変換効率13-15%、製造コスト2-8ドル/kgを達成。中央アジアの高日射地域では、温帯気候に比べコストを20-30%削減可能。長期安定性試験では1000時間以上にわたり劣化率0.01mm/年未満を確認。
English
This paper presents a comprehensive optimization of alkaline electrolysis systems powered by photovoltaic energy for hydrogen production. It investigates key parameters: KOH concentration (25-30 wt%), temperature (25-80°C), current density (100-500 mA/cm²), and cost-effective 316L stainless steel electrodes. Optimized systems achieve solar-to-hydrogen efficiency of 13-15% and production costs of $2-8/kg. In high solar irradiation regions (e.g., Uzbekistan >2000 kWh/m²/year), costs can be reduced by 20-30% compared to temperate climates. Long-term stability testing over 1000 hours confirms electrode degradation below 0.01 mm/year and performance degradation under 2%, validating operational lifetimes exceeding 20 years.
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
日本の水素基本戦略では、グリーン水素のコスト低減が喫緊の課題。本論文で示された電解条件の最適化（KOH濃度30wt%、温度60-80℃、電流密度200-400mA/cm²）は、日本国内の実証プラントにも応用可能。特に、太陽光発電との組み合わせによる効率向上（MPPT制御で12-15%向上）は、日本の再エネ水素製造に直接的な示唆を与える。
In the global GX context
This paper offers practical optimization guidelines for green hydrogen production in solar-rich developing regions, which is critical for global decarbonization. The findings on cost reduction (20-30% in high irradiation areas) and long-term stability (20-year lifetime) directly support the economics of hydrogen hubs being developed under initiatives like the Hydrogen Council and IPHE. The study's focus on widely available materials (316L stainless steel) and proven alkaline electrolysis technology enhances replicability for emerging economies.
👥 読者別の含意
🔬研究者:Provides experimental benchmarks for alkaline electrolysis optimization under realistic solar conditions, valuable for further system modeling and catalyst development.
🏢実務担当者:Offers concrete operating parameters and cost estimations for deploying green hydrogen projects in sunbelt regions, useful for feasibility studies.
🏛政策担当者:Highlights the potential for cost-competitive green hydrogen production in high-irradiation areas, supporting policy frameworks for hydrogen incentives and infrastructure planning.
📄 Abstract（原文）
This paper presents a comprehensive optimization study of hydrogen production systems through alkaline water electrolysis powered by photovoltaic energy sources, with a specific focus on Central Asian applications. The research systematically investigates critical operating parameters including KOH electrolyte concentration (25-30 wt%), temperature effects (25-80°C), current density optimization (100-500 mA/cm²), and electrode material performance using cost-effective 316L stainless steel. Experimental results demonstrate that optimized systems achieve solar-to-hydrogen efficiency of 13-15%, with hydrogen production costs ranging from $2-8/kg depending on system scale. The study reveals that maximum performance occurs at 30 wt% KOH concentration, 60-80°C operating temperature, and 200-400 mA/cm² current density. Long-term stability testing over 1000 hours confirms electrode degradation rates below 0.01 mm/year and performance degradation under 2%, validating projected operational lifetimes exceeding 20 years. For high solar irradiation regions like Uzbekistan (>2000 kWh/m²/year), the analysis indicates potential hydrogen production cost reductions of 20-30% compared to temperate climates. The integration of maximum power point tracking control improves overall energy utilization by 12-15% relative to direct coupling configurations. These findings provide practical guidelines for implementing economically viable green hydrogen production systems in solar-rich developing regions.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.59048/2181-1105.1752first seen 2026-05-21 04:30:49
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