Development of a long-term optimization method for resilient district energy supply systems

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K22455
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0304:Architecture, building engineering, and related fields
• Research Institution: Building Research Institute
• Principal Investigator: Ueno Takahiro 国立研究開発法人建築研究所, 環境研究グループ, 研究員 (80881804)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: 地域熱電併給 / 地域冷暖房 / 電力需要 / 熱需要 / カーボンニュートラル / レジリエンス / ライフサイクルCO2排出量 / ライフスパン

Outline of Final Research Achievements

The Japanese government is promoting the spread of local energy supply systems to reduce CO2 emissions and decentralize energy supply. This system has various advantages in terms of energy conservation by sending heat and electricity from energy supply facilities centralized in a local area to multiple consumer buildings. However, because the system will operate for several decades, changes in regional conditions, such as changes in consumer buildings and improvements in grid power efficiency, will have a significant impact on the system's performance. Therefore, this study constructs a long-term optimization method for local energy supply systems that can respond to changes in local conditions. Based on the results of a survey of case studies of this system, multiple possible future scenarios were developed over several decades, and system performance was evaluated using simulations to derive highly efficient equipment configurations and operational settings.

Free Research Field

都市エネルギー

Academic Significance and Societal Importance of the Research Achievements

日本における地域エネルギー供給システムは50年の歴史を有しており、累計導入数も150を超えている。その多くは熱供給システムとして1990年代に導入されているため、30年近く経過した現在では、多くの供給設備が改修時期を迎えていると考えられる。
このことから、本研究は国内の地域エネルギー供給システムにおいて、これまでの知見を活かした長期間における最適な設備構成・運用計画へのニーズに応えるものである。