グリーン水素製造システムにおけるヒートポンプ：技術レビュー
Heat Pumps in Green Hydrogen Production Systems: A Technical Review (原題)
(著者不明)
🤖 gxceed AI 要約
日本語
本レビューは、アルカリ・PEM・AEM・固体酸化物電解によるグリーン水素製造の廃熱回収に着目し、各種ヒートポンプ技術の統合可能性を比較する。蒸気圧縮式（単段・多段・カスケード・超臨界）や吸着式の特性、作動流体、実用上の制約を整理し、直接回収とヒートポンプ支援の使い分けを提案。選定フレームワークでは温度整合性、COP、LCoHを指標とし、地域暖房や工業プロセスへの外部供給と、給水予熱等の内部利用の2つの応用領域を示す。
English
This review examines waste heat recovery in green hydrogen production via alkaline, PEM, AEM, and solid oxide electrolysis, comparing heat pump technologies for integration. It covers vapour-compression (single-stage, multistage, cascade, transcritical) and absorption/adsorption systems, focusing on working fluids and practical limits. A selection framework based on temperature compatibility, COP, and LCoH guides choices between direct recovery and heat pump assistance. Applications include district heating, industrial supply, and internal feedwater preheating or steam generation.
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
日本では水素基本戦略やグリーンイノベーション基金で水素製造の効率化が重視されており、廃熱回収によるシステム効率向上はコスト低減と資源有効利用の観点から重要。本レビューの選定フレームワークは、国内の水素プロジェクト設計やFCEV・水素サプライチェーン構築に示唆を与える。
In the global GX context
Globally, green hydrogen is central to decarbonization strategies, and improving system efficiency via heat recovery can reduce LCoH and enhance competitiveness. This review provides a structured comparison of heat pump integration options, relevant for hydrogen producers, engineering firms, and policymakers designing support schemes. It bridges hydrogen production and heat pump technologies, offering a framework applicable to various climate and infrastructure contexts.
👥 読者別の含意
🔬研究者:Provides a systematic comparison of heat pump technologies for waste heat recovery in electrolysis, useful for system integration research.
🏢実務担当者:Offers a selection framework and performance data to guide engineering decisions in hydrogen plant design and heat recovery implementation.
🏛政策担当者:Highlights efficiency gains in hydrogen production that could inform subsidy or incentive programs for green hydrogen.
📄 Abstract（原文）
Green hydrogen production through water electrolysis is a key pathway to the decarbonization of future energy systems. However, part of the electrical input is transformed into waste heat. In this study, alkaline, proton-exchange membrane, anion-exchange membrane, and solid oxide electrolysis systems are compared in terms of operating temperature, heat generation, heat transfer medium, and integration constraints. Reported COP values for commercial high-temperature vapour-compression heat pumps range from 2.4 to 5.8, depending on operating conditions. The heat-pump technologies reviewed include vapour-compression systems with single-stage, multistage, cascade, and transcritical configurations, together with absorption and adsorption systems, with a focus on suitable working fluids and practical limitations. The review distinguishes between direct heat recovery and heat recovery assisted by heat pumps, and it identifies two main areas of application: external supply for district heating, industrial consumers, and energy communities; and internal support for feedwater preheating, water cycle integration, and steam generation. A selection framework is proposed in which source- and sink-temperature compatibility determines thermodynamic feasibility, COP characterizes heat-pump performance, and LCoH supports techno-economic comparison. Direct heat recovery should be preferred when temperatures are compatible, while heat pumps can operate as enabling technologies when temperature upgrading is required and system-level economic and environmental performance remains advantageous.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/hydrogen7030129first seen 2026-09-09 05:28:06 · last seen 2026-09-22 05:01:32
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