中国西北部における太陽光発電および系統電力由来グリーン水素チェーンのライフサイクル環境・経済評価
Life-Cycle Environmental and Economic Assessment of Photovoltaic and Grid-Powered Green Hydrogen Chains in Northwest China (原題)
Zunbo Wang, Yong He, Jianghu Bai, Wenqi Wang, Zhongtao Liao, Xiaobo Cui, Bo Ling, Zhihua Wang
🤖 gxceed AI 要約
日本語
中国西北部・玉門油田を対象に、PV／系統電力、AWE／PEM電解、パイプライン／トレーラー輸送を組み合わせた8シナリオで水素供給チェーンをLCA評価した。電力源が環境性能を最も左右し、PV由来水素はGWPを最大91%、水消費を約87%削減するが、PV設備やPEM電解スタック製造に伴い金属枯渇は増加する。輸送・圧縮工程の寄与も無視できず、炭素価格次第でPV水素は2035年までにグレー水素のコスト域に接近・到達しうる。
English
A cradle-to-gate LCA and cost assessment of industrial hydrogen in Northwest China's Yumen Oilfield across eight scenarios combining PV or grid power, AWE or PEM electrolysis, and pipeline or tube-trailer transport. Electricity source dominates environmental performance: PV hydrogen cuts GWP up to 91% and water use ~87%, though metal depletion rises from PV and PEM stack materials. Transport/compression matter, and under carbon-price assumptions PV hydrogen approaches gray hydrogen cost by 2035.
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
水素のLCOHと炭素価格感度を組み合わせた評価は、日本の水素社会推進・GX経済移行債や水素供給コスト低減目標を議論する際の参照枠になる。ただし中国の地域電力構成に依存する点は日本の電源構成と比較して読む必要がある。
In the global GX context
Adds empirical LCA-plus-LCOH evidence on green hydrogen cost competitiveness under carbon pricing, relevant to global transition-finance and hydrogen subsidy design debates. Its scenario structure (power source × electrolyzer × transport) offers a replicable template for disclosure-grade hydrogen value-chain accounting.
👥 読者別の含意
🔬研究者:電力源・電解方式・輸送の組合せが環境・コスト両面に与える影響を定量化したシナリオ設計の参照例となる。
🏢実務担当者:水素調達や脱炭素投資の判断で、電力源選択と輸送・圧縮工程を含むサプライチェーン全体の排出・コスト評価の重要性を示す。
🏛政策担当者:炭素価格の水準設定がグリーン水素のコスト競争力と普及時期に与える影響を検討する際の定量的根拠となる。
📄 Abstract（原文）
Abstract This study conducts a cradle-to-gate life-cycle environmental and economic assessment of industrial-scale hydrogen production in the Yumen Oilfield, Northwest China. Eight scenarios are established by combining photovoltaic (PV) or grid electricity, alkaline water electrolysis (AWE) or proton exchange membrane electrolysis (PEM), and pipeline or tube-trailer transportation over 100 km. Global warming potential (GWP), acidification potential (AP), metal depletion (MD), water consumption, and the levelized cost of hydrogen (LCOH) are evaluated. The results show that the electricity source is the dominant factor affecting the environmental performance. Compared with grid-powered scenarios, PV-powered hydrogen reduces GWP by up to 91% and water consumption by approximately 87%, although it increases MD because of the material requirements of PV infrastructure and, particularly for PEM-based pathways, electrolyzer stack manufacturing. Contribution analysis reveals that hard coal dominates grid-related GWP and AP, whereas hydropower is the primary contributor to grid-related water consumption. In PV-powered scenarios, truck transportation contributes significantly to the GWP and AP, indicating that downstream compression and transportation should not be neglected in industrial hydrogen supply chains. An integrated environmental-economic assessment shows that PV-powered hydrogen achieves a better balance between carbon reduction and cost performance than grid-powered hydrogen. Under the specific carbon-price and slow, medium, and fast development assumptions, PV-powered hydrogen is projected to approach or enter the cost range of gray hydrogen by 2035.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.1021/acs.energyfuels.6c03589first seen 2026-10-25 23:52:43
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。