Economic and Environmental Comparison of District Centralized Energy Supply Systems in Hot-Summer and Cold-Winter Regions
暑い夏と寒い冬の地域における地区集中エネルギー供給システムの経済的および環境的比較 (AI 翻訳)
Wenwen Zhang, Qingrong Liu, Yingjun Ruan, Hua Meng, Chengliang Lu, Tingting Xu, Yuting Yao, Yueqiu Xia
🤖 gxceed AI 要約
日本語
本研究は中国浙江省の商業ビル群を対象に、5つの地区エネルギー供給方式を経済性と環境面で比較した。ガス・電気ハイブリッド、ガスコジェネ、全電化（ヒートポンプ）、PV併設、蓄電併設の各ケースを分析。結果、全電化方式は低炭素で優位、ガスコジェネはガス価格に敏感、PVと蓄電の追加が経済性と排出に与える影響を定量化した。
English
This study compares five district energy supply schemes for commercial building clusters in Zhejiang, China: gas-electric hybrid, gas cogeneration, all-electric (heat pumps), PV integration, and energy storage. Results show all-electric pathways achieve lower carbon emissions; gas cogeneration is sensitive to gas prices; PV reduces costs and emissions; storage improves economics but slightly increases emissions due to roundtrip losses.
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
日本の業務用ビル群のエネルギーシステム設計においても、同様の比較評価手法が適用可能。特にヒートポンプとPVの組み合わせは、日本のエネルギー基本計画における民生部門脱炭素化に示唆を与える。
In the global GX context
The paper provides a systematic comparison methodology for district energy planning, relevant to global efforts in urban decarbonization. Its findings on the trade-offs between gas cogeneration and all-electric systems are valuable for cities implementing climate action plans, especially in climates with both cooling and heating demands.
👥 読者別の含意
🔬研究者:Offers a rigorous multi-criteria comparison framework for district energy systems that can be adapted to other regions.
🏢実務担当者:Provides quantitative benchmarks for selecting cost-effective and low-carbon energy supply schemes in commercial districts.
🏛政策担当者:Highlights the sensitivity of gas-based systems to fuel prices and the benefits of electrification with renewables, informing urban energy policy.
📄 Abstract（原文）
This paper evaluates alternative district energy supply pathways for commercial building clusters in hot-summer and cold-winter regions. A $2.82 ~\text{km}^{2}$ planning area in Zhejiang Province, China, is investigated, where a centralized system serves 2.51 million $\mathrm{m}^{2}$ of commercial buildings. Hourly cooling, heating, and electricity demand profiles are established under unified system boundaries and consistent accounting rules. Five representative energy supply schemes are compared, covering a conventional centralized gas—electric hybrid system, a gas-based combined cooling, heating and power pathway, an all-electric pathway based on heat pumps, and extensions with photovoltaic generation and energy storage. The comparative results show that different pathways exhibit distinct economic and environmental advantages under different constraints. The conventional gaselectric scheme features a lower upfront investment but higher operating cost. The gas-based cogeneration pathway is highly sensitive to natural gas prices, becoming economically competitive only at relatively low gas prices and losing competitiveness as gas prices increase. The all-electric pathway generally achieves lower carbon emissions due to the high efficiency of heat pump operation. PV integration further reduces both annualized cost and emissions through self-consumption and electricity export, while the addition of energy storage can improve economic performance by enhancing PV utilization and peak-valley electricity price arbitrage, albeit with slight emission increases caused by roundtrip losses. These findings provide decision-oriented guidance for district energy system selection.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1109/iceaai68945.2026.11442595first seen 2026-05-15 17:36:40
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