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Reconfiguring flexibility in renewable power-to-ammonia systems using molten-salt thermal energy storage in the ammonia synthesis loop: A coordinated electro-hydrogen-thermal scheduling approach

再生可能電力からアンモニアへのシステムにおける柔軟性の再構成：アンモニア合成ループ内の溶融塩熱エネルギー貯蔵を用いた電気-水素-熱協調スケジューリング手法 (AI 翻訳)

Yiwei Qiu, Qingjie Sun, Yangjun Zeng, Ge Chen, Longjie Yang, Ge He, Xu Ji, Shi Chen, Buxiang Zhou, Kaigui Xie College of Electrical Engineering, Sichuan University, School of Electrical Engineering, School of Electrical Engineering, Great Bay University

2026-04-28#水素Origin: CN
原典: https://www.semanticscholar.org/paper/067067d0b335e24e27069829ea37a311c034bf4f

🤖 gxceed AI 要約

日本語

本研究は、再生可能電力からアンモニアを製造するシステムにおいて、溶融塩熱エネルギー貯蔵をアンモニア合成ループに統合し、電気・水素・熱の協調スケジューリング手法を開発した。これにより、水素供給変動が反応器の熱的安定性に与える影響を緩和し、大容量バッテリーに依存せずにシステムの柔軟性を向上できることを示した。中国北部の産業規模プロジェクトを基にしたケーススタディで、小容量バッテリーと水素・熱貯蔵の組み合わせが経済的にも優れることを実証している。

English

This study integrates molten-salt thermal energy storage (MS-TES) into the Haber-Bosch ammonia synthesis loop for renewable power-to-ammonia systems. It develops a coordinated electro-hydrogen-thermal scheduling framework that decouples hydrogen supply fluctuations from reactor thermal dynamics. Using a mixed-integer linear program with information gap decision theory, case studies from a northern China project show that MS-TES enhances thermal stability and reduces the need for large battery capacity, achieving near-equivalent performance with lower investment.

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・アンモニアのエネルギーキャリアとしての活用を推進しており、本手法は輸入アンモニアの製造や国内での再生可能エネルギー由来アンモニア生産の柔軟性向上に示唆を与える。特に、大容量バッテリーに依存しないシステム設計は、日本の限られた土地や資源条件にも適合しうる。

In the global GX context

This paper presents a novel flexibility solution for power-to-ammonia systems, which is relevant to global efforts in hydrogen and ammonia as decarbonized energy carriers. The integration of molten-salt thermal storage reduces reliance on expensive battery storage, offering a cost-effective pathway for renewable ammonia production. The scheduling framework with IGDT addresses renewable uncertainty, applicable to regions with variable wind and solar.

👥 読者別の含意

🔬研究者:The coordinated scheduling model and thermal storage integration provide a new direction for operational research in power-to-X systems.

🏢実務担当者:Engineers designing renewable ammonia plants can consider MS-TES as a cost-effective alternative to large battery systems for flexibility.

🏛政策担当者:The findings support policies promoting hydrogen-based energy storage and ammonia as a flexibility resource in renewable energy systems.

📄 Abstract（原文）

In renewable power-to-ammonia (ReP2A) systems, the intermittency of wind and solar generation propagates through electrolytic hydrogen production and induces thermal instability in the ammonia synthesis reactor (ASR). The resulting temperature cycling accelerates fatigue and shortens service life, while reactor thermal inertia limits flexible start-up, shutdown, and load adjustment. To address this issue, this study integrates molten-salt thermal energy storage (MS-TES) into the Haber-Bosch synthesis loop and develops a coordinated electro-hydrogen-thermal scheduling framework. MS-TES decouples hydrogen supply fluctuations from reactor thermal dynamics by enabling hot standby operation and sustained thermal support during start-up and low-load conditions. A state-space model is established to capture the thermal dynamics of the ASR and MS-TES. Based on this model, an optimal scheduling program coordinates ammonia synthesis operation with hydrogen production, battery energy storage (BES), and hydrogen storage (HS). The problem is formulated as a mixed-integer linear program (MILP) and extended with information gap decision theory (IGDT) to address renewable uncertainty. Case studies based on an industrial-scale project in northern China show that MS-TES enhances reactor thermal stability and system-level flexibility, while diminishing the marginal benefit of large BES capacity. As a result, a configuration combining small BES, HS, and MS-TES achieves near-equivalent performance to large-BES systems, with lower investment and improved economic returns. Year-round simulations further show that MS-TES avoids ASR start-up and shutdown and delivers consistently higher net revenue under variable renewable conditions.

🔗 Provenance — このレコードを発見したソース

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