ハイブリッドエネルギーシステムと直接空気回収による低炭素アンモニア・メタノールへの転換：4E評価
Transition to low-carbon ammonia and methanol through hybrid energy systems and direct air capture: A 4E assessment (原題)
GholamReza Aghdami, Farzin Hosseinifard, Mona Zamani Pedram, Mohsen Salimi, Majid Amidpour
🤖 gxceed AI 要約
日本語
ブルー/グリーンメタノールとグレー/グリーンアンモニアの4経路を、技術・経済・エクセルギー・環境の4Eで比較評価した研究。Aspenと太陽熱モデルでシミュレーションし、ブルーメタノールとグレーアンモニアは高いNPVを示す一方、グリーン品は割引率10%では採算不成立、4%では正のNPVとなった。グリーン経路はエクセルギー効率が最も高く、GHGを57〜90%削減する。
English
This study compares four ammonia and methanol pathways (blue/green methanol, gray/green ammonia) using a 4E framework—technical, economic, exergy, and environmental. Simulated in Aspen with solar thermal integration, blue methanol and gray ammonia are highly profitable, while green products are unviable at a 10% discount rate but turn NPV-positive at 4%. Green pathways show the highest exergy efficiency and cut GHG emissions by 57–90%.
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
日本は水素・アンモニアをGX推進の重点分野とし、燃料アンモニア混焼やe-メタノール導入を掲げる。本稿のLCOA・LCOMや割引率感度は、日本の支援策・差額決済制度の設計や事業性評価の参照値として有用。
In the global GX context
As ISSB/CSRD push hard-to-abate sectors toward credible transition plans, this 4E comparison of blue vs green ammonia/methanol offers quantitative benchmarks on cost, exergy, and GWP that inform transition-finance eligibility and green-premium debates.
👥 読者別の含意
🔬研究者:4E統合評価と太陽熱統合の感度分析は、低炭素化学品の経路比較研究の手法参照になる。
🏢実務担当者:グリーンアンモニア・メタノールの採算条件と割引率感度は、投資判断や調達戦略の前提整理に使える。
🏛政策担当者:割引率4%で採算が改善する点は、差額支援や低利融資など政策インセンティブ設計の根拠になり得る。
📄 Abstract（原文）
Decarbonizing methanol and ammonia production has become increasingly important for reducing greenhouse gas emissions; however, balancing environmental benefits with economic feasibility remains a major challenge. This study addresses this challenge by providing a unified comparative assessment of four production pathways integrating advanced carbon capture technologies and hybrid energy systems. Four scenarios, including blue methanol, green methanol, gray ammonia, and green ammonia, are evaluated in terms of their technical, economic, exergy, and environmental performance. The process units, including steam methane reforming (SMR) and water electrolysis for hydrogen production, post-combustion carbon capture (PCC) and direct air capture (DAC), and methanol and ammonia synthesis, were simulated using Aspen HYSYS and Aspen Plus. The parabolic trough collector (PTC)-based solar plant was modeled using Thermoflex and System Advisor Model (SAM) software to meet the thermal demands of the production chain. A sensitivity analysis on the solar fraction was conducted to determine the economically optimal point. Economic analysis indicates that blue methanol and gray ammonia exhibit significant profitability, with net present values (NPV) of 285 and 207 M$, respectively. In contrast, green methanol and green ammonia have high levelized costs (LCOM = 856 $/t; LCOA = 837 $/t), rendering them economically unviable at a 10% discount rate. At a reduced discount rate of 4%, green methanol and green ammonia achieve NPVs of 123 and 135 M$, respectively, indicating improved economic viability. Exergy analysis shows that green methanol and green ammonia attain the highest overall exergy efficiencies of 41.9% and 43.5%, respectively. Environmental analysis using Global Warming Potential (GWP) metric shows that green methanol and green ammonia reduce greenhouse gas emissions by 57% and 90%, respectively. The findings of this study demonstrate that low-carbon and green pathways can reduce emissions while remaining economically viable under hybrid energy systems, with supportive policies and financial incentives.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.egyr.2026.109862first seen 2026-11-02 04:47:47 · last seen 2026-11-06 04:48:55
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