Retrofitting Abandoned Slate Mine For Long-Term Thermal Energy Storage: Lessons Learned From the WeForming and Ard-Nrgy Projects
廃坑スレート鉱山の長期熱エネルギー貯蔵への転用: WeFormingおよびArd-Nrgyプロジェクトからの教訓 (AI 翻訳)
Ransy, Frédéric, Cendoya, Aitor, Lemort, Vincent
🤖 gxceed AI 要約
日本語
ベルギーの廃坑スレート鉱山を大規模熱エネルギー貯蔵施設に転用するプロジェクトの教訓を提示。3つのシステム構成（個別地中熱ヒートポンプ、集中非貯蔵、集中貯蔵）をモデル化し、地下貯蔵が太陽光自家消費とエネルギー自給率を向上させることを確認。しかし、地質的不確実性が技術経済的実現性を支配すると結論。
English
This paper presents lessons from converting a Belgian slate mine into a large-scale thermal energy storage facility. Dynamic modeling of three architectures (individual geothermal heat pump, centralized without storage, centralized with storage) shows underground storage improves PV self-consumption and energy self-sufficiency, with seasonal efficiency comparable to conventional UTES. Geological uncertainty dominates techno-economic viability.
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
日本には多くの廃坑があり、同様の熱エネルギー貯蔵プロジェクトの可能性がある。特に、再生可能エネルギー熱利用の推進や、地域熱供給システムへの統合が課題となる日本において、本研究成果は示唆に富む。
In the global GX context
This Belgian case study provides valuable lessons for global UTES development, particularly in repurposing abandoned mines for seasonal thermal storage. It highlights the importance of geological characterization and optimal sizing for economic viability, relevant for EU climate goals.
👥 読者別の含意
🔬研究者:Detailed dynamic modeling methodology and techno-economic analysis of mine-based UTES.
🏢実務担当者:Feasibility insights for converting abandoned mines into thermal storage, including sizing and costs.
🏛政策担当者:Supports policy for innovative energy storage using abandoned mine infrastructure.
📄 Abstract（原文）
This paper presents the lessons learned from the WeForming and Ard-Nrgy projects, which aim to convert a former slate mine in Martelange, Belgium, into a large-capacity underground thermal energy storage facility. Considering the European climate objectives and the growing need to integrate intermittent renewable energy sources into heating networks, the reuse of abandoned flooded mines represents an innovative technical and economic opportunity. After exploring the identified cavity and conducting drilling operations, a complete pumping, heat exchange, water treatment, and fiber optic measurement system was installed. Detailed dynamic modeling, based on Modelica and the IDEAS library, was conducted to analyze the performance of three different architectures: an individual geothermal heat pump system, a centralized system without storage, and a centralized system with storage. The simulations show that underground storage can improve photovoltaic selfconsumption and energy self-sufficiency, while ensuring seasonal storage efficiency comparable to conventional UTES systems. The results also demonstrate the importance of adequately sizing the underground storage volume, which is essential for optimizing system costs and performance. The conclusion is that the geological uncertainty dominates techno-economic viability of mine-based UTES.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/21296108first seen 2026-07-12 04:15:50 · last seen 2026-07-12 04:17:08
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