Selecting Between Hydrogen and Methanol for Fuel Cell‐Organic Rankine Cycle Hybrid Power Systems: A Comparative 4E Analysis
水素燃料電池とメタノール燃料電池を用いた有機ランキンサイクルハイブリッド発電システムの比較：4E解析に基づく選定 (AI 翻訳)
Zahra Piryaei, Maryam Karami, Iman Khazaee
🤖 gxceed AI 要約
日本語
本研究は、水素燃料電池（PEMFC）と直接メタノール燃料電池（DMFC）を有機ランキンサイクル（ORC）と組み合わせたハイブリッド発電システムを比較する4E解析（エネルギー、エクセルギー、経済、環境）を実施した。PEMFC-ORCはエネルギー効率が高い（35％対29％）が、DMFC-ORCはエクセルギー性能と均等化発電コストで優れる（0.27ドル/kWh対0.63ドル/kWh）。ただし、DMFC-ORCはCO2排出量が約2倍と環境負荷が大きい。これらのトレードオフがSDG7とSDG13の達成に向けた技術選択に示唆を与える。
English
This study performs a 4E (energy, exergy, economic, environmental) analysis comparing hybrid power systems combining proton exchange membrane fuel cells (PEMFC) with organic Rankine cycle (ORC) against direct methanol fuel cells (DMFC) with ORC, both sized at ~70 kW. PEMFC-ORC achieves higher energy efficiency (35% vs 29%), while DMFC-ORC excels in exergy efficiency (55% vs 42%) and levelized cost of electricity ($0.27/kWh vs $0.63/kWh) but has nearly double CO2-equivalent emissions. The trade-offs inform technology choices aligned with SDG 7 and SDG 13.
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
本論文は日本の政策を直接扱わないが、水素とメタノールの燃料電池比較は日本の水素戦略や定置用電源の技術選択に示唆を与える。4E解析の定量ベンチマークは燃料電池開発に関わる日本企業・研究者にとって有用である。
In the global GX context
This comparative analysis contributes to the global literature on low-carbon fuel cell systems by providing a comprehensive 4E assessment. The results highlight trade-offs relevant for technology selection in decarbonizing power generation, especially for distributed and hybrid systems.
👥 読者別の含意
🔬研究者:The 4E framework and comparative methodology can be used for evaluating other hybrid fuel cell systems.
🏢実務担当者:The cost and efficiency comparisons provide reference data for selecting between hydrogen and methanol fuel cell systems in on-site power generation projects.
🏛政策担当者:The environmental trade-offs highlight the need to consider full lifecycle emissions when incentivizing hydrogen vs methanol technologies.
📄 Abstract（原文）
ABSTRACT Rising electricity demand and growing concerns over climate change underscore the urgent need for efficient and low‐carbon power generation technologies. In this context, selecting the suitable fuel cell technology becomes critical to achieving both high technical performance and environmental sustainability. This study presents a comprehensive model for two different hybrid power generation systems: one comprising a hydrogen‐fueled proton exchange membrane fuel cell (PEMFC) with an Organic Rankine Cycle (ORC) heat recovery system, and the other comprising a direct methanol fuel cell (DMFC) with ORC. A comparative assessment is conducted to investigate and compare the energetic, exergetic, economic, and environmental (4E) performance of these systems as a function of current density. Both systems are designed to produce the same peak electrical output (≈70 kW), allowing for a meaningful comparison. The 4E analysis reveals that PEMFC‐ORC achieves greater energy efficiency (35% vs. 29%), while DMFC‐ORC demonstrates superior exergy performance (55% vs. 42%) and a more favorable levelized cost of electricity ($0.27/kWh vs. $0.63/kWh). Nonetheless, DMFC‐ORC incurs a significantly higher environmental burden, with annual CO 2 ‐equivalent emissions nearly twice those of PEMFC‐ORC. These identified trade‐offs inform technology choices that align with the interconnected objectives of Sustainable Development Goal 7 (Affordable and Clean Energy) and Sustainable Development Goal 13 (Climate Action).
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/ese3.70575first seen 2026-06-22 04:53:05
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