Synergistic trigeneration of hydrogen, electricity, and freshwater using a small modular supercritical CO2 fast reactor
小型モジュール超臨界CO2高速炉を用いた水素・電力・淡水の相乗的三世代生成 (AI 翻訳)
Fateme Dehghani, Khashayar Sadeghi, S. Ghazaie, E. Sokolova, M. Hosseinllu, W. Peng
🤖 gxceed AI 要約
日本語
本稿は、200MWthの小型モジュール超臨界CO2高速炉を用いた水素・電力・淡水の三世代システムを提案する。高温蒸気電解と多効用蒸留を組み合わせ、約53%のコージェネレーション効率と2.93ドル/kgの水素製造コストを達成。半統合モードで日量約550トンの水素生産が可能。このシステムは、カーボン・水・グリッド変動に依存しない強靱な水素製造経路を提供する。
English
This study proposes a nuclear-integrated trigeneration system for co-producing hydrogen, electricity, and freshwater using a 200 MWth small modular supercritical CO2 fast reactor. By coupling high-temperature steam electrolysis with multi-effect distillation, the system achieves a cogeneration efficiency of ~53% and a levelized cost of hydrogen of $2.93/kg. The semi-integrated mode provides about 550 metric tons of hydrogen daily. This work demonstrates a resilient, carbon-free hydrogen production pathway that avoids intermittency and water scarcity issues.
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、小型モジュール炉を用いた水素製造システムを提案し、日本のGX政策（原子力活用、水素社会実現）に直接貢献する。特に、水とカーボンから独立した水素製造は、日本のエネルギー安全保障と脱炭素目標に合致する。
In the global GX context
This paper presents a nuclear-based hydrogen trigeneration concept that eliminates intermittency and water dependency, offering a template for global hydrogen hubs. It complements ongoing efforts in the US, EU, and Japan to scale clean hydrogen through diverse pathways.
👥 読者別の含意
🔬研究者:Researchers can leverage the cascading exergy strategy and unified techno-economic framework for further optimization of nuclear-hydrogen systems.
🏢実務担当者:Practitioners in energy and hydrogen industries can assess the techno-economic viability of nuclear-integrated hydrogen production for hard-to-abate sector decarbonization.
🏛政策担当者:Policymakers should note the competitive LCOH of $2.93/kg and the potential of small modular reactors for resilient hydrogen supply.
📄 Abstract（原文）
Clean hydrogen offers a viable pathway for the substantial decarbonization of hard-to-abate industries. However, current production methods such as renewable-powered electrolysis are challenged by intermittency and high-water consumption, creating a strategic problem at the energy-water nexus. This study introduces a novel nuclear-integrated tri-generation system for the co-production of hydrogen, electricity, and freshwater, thereby enhancing resource synergy and sustainability. The proposed system is based on a 200 MWth small modular supercritical CO2-cooled fast reactor (SM-SCFR) coupled with high-temperature steam electrolysis and multi-effect distillation (MED) desalination plant. The core innovation is a cascading exergy strategy, where high-temperature heat from reactor drives HTSE, while recovered low-grade waste heat powers MED plant, thereby converting a thermodynamic loss into a productive input. A unified techno-economic framework, based on the power loss factor (PLF) and gain output ratio, evaluates two operational modes: a fully integrated self-sufficient configuration for complete water autonomy and a semi-integrated market-led (SML) configuration that provides desalinated water to meet market demand. Process simulations validate stable integration, yielding a cogeneration efficiency of ∼53% and a favorable PLF. Techno-economic analysis indicates that the SML mode achieves a competitive levelized cost of hydrogen of 2.93 $/kg at a daily production capacity of approximately 550 metric tons. The MED plant, while accounting for only 0.6% of the total capital cost, enables this capability. This work provides a quantitative basis for resilient nuclear-based hydrogen systems that eliminate dependencies on carbon, freshwater, and grid intermittency.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1088/2516-1083/ae7f66first seen 2026-07-13 07:04:20
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