A review on solar-assisted fourth- and fifth-generation district heating networks
第4世代および第5世代の地域暖房ネットワークにおける太陽熱利用に関するレビュー (AI 翻訳)
GUARINO, Stefania, Lo Brano, Valerio, Piacentino, Antonio
🤖 gxceed AI 要約
日本語
本レビューは第4世代（4GDH）および第5世代（5GDHC）の地域暖房ネットワークにおける太陽熱利用の技術と性能を整理。4GDHでは太陽熱割合40～70%、ヒートポンプSCOP 3.5～5.0、5GDHCではSCOP 4.0～6.0を達成。11事例から3つの構成パターンを特定し、熱供給コストは45～200€/MWhと幅広い。
English
This review examines solar-assisted district heating in 4GDH and 5GDHC networks. It reports solar fractions of 40-70% for 4GDH with heat pump SCOP of 3.5-5.0, and SCOP of 4.0-6.0 for 5GDHC. Three typical configurations are identified from 11 case studies, with levelized heat costs ranging from 45 to over 200 €/MWh.
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
日本のGX政策では熱分野の脱炭素化が重要な柱であり、本レビューの性能データやコスト比較は今後の都市熱供給計画に示唆を与える。特に、蓄熱システムやヒートポンプとの統合設計は日本の気候条件にも応用可能。
In the global GX context
This review provides a structured comparison of solar-assisted district heating performance and costs, supporting urban decarbonisation strategies globally. It aligns with IEA and IPCC pathways for heat decarbonisation and offers benchmarks for technology selection.
👥 読者別の含意
🔬研究者:A comprehensive synthesis of performance ranges and design configurations for solar-assisted 4GDH and 5GDHC systems, highlighting open research priorities.
🏢実務担当者:Useful reference for evaluating solar thermal integration in district heating projects, with cost and performance data for system sizing.
🏛政策担当者:Provides evidence for designing support schemes for low-carbon district heating, particularly on cost-effectiveness of different solar integration levels.
📄 Abstract（原文）
Solar-assisted district heating is a key decarbonization pathway for urban heat supply, yet its integration within low-temperature networks remains technically demanding and context-dependent. This review examines how solar thermal collectors, seasonal thermal energy storage, and heat pumps interact in fourth-generation (4GDH) and fifth-generation (5GDHC) district heating and cooling architectures. In 4GDH, centralized solar fields with large-scale storage achieve solar fractions of 40–70%, heat pump SCOP of 3.5–5.0, and distribution losses of 5–15%. In 5GDHC, an ambient neutral ring at 15–18 °C enables decentralized heat pumps with SCOP of 4.0–6.0, at the cost of thermodynamic degradation and summer conflicts between solar feed-in and cooling demand. Performance ranges are consolidated in structured comparative tables. A synthesis of 11 case studies identifies three recurring configurations: high-solar-fraction borehole storage (feasible but costly); cost-optimized pit storage 4GDH (40–50% solar fraction at 55–60 €/MWh), and emerging 5GDHC networks with heating, cooling and PV or hybrid PV-thermal integration. Levelized heat costs range from 45 €/MWh for cost-optimal 4GDH configurations to over 200 €/MWh for high-solar-fraction systems. The review identifies storage sizing, control strategy, and system boundaries as key sources of performance variability and outlines open research priorities.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/21451979first seen 2026-07-21 04:14:14
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