2023 Fiscal Year Final Research Report
Research on planning, design, and optimal operation of 5th generation district heating with large-scale underground thermal energy storage
| Project/Area Number |
21H01485
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 23020:Architectural environment and building equipment-related
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
阪田 義隆 金沢大学, 地球社会基盤学系, 准教授 (10754236)
葛 隆生 北海道大学, 工学研究院, 准教授 (60552411)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 地中蓄熱 / 地域熱供給 / ヒートポンプ / 太陽光発電 / 蓄電池 / 地盤物性 / ネットゼロエネルギービル / 最適化 |
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| Outline of Final Research Achievements |
An AI-based weather forecasting system was incorporated for individual buildings and communities with photovoltaic power generation systems, and an optimal operation system for heating, cooling, and hot water heat pumps, storage battery recharge/discharge, etc. was constructed to maximize the use of renewable electricity and minimize CO2 emissions by using optimization planning methods. The CO2 emission reduction, peak load reduction, and load leveling effects of applying this system were clarified. At the same time, we developed design and performance prediction tools for large-scale BTES, and applied the indicator kriging method, one of the 3D probability completion methods, to construct a database of 3D geological information at great depths throughout Japan, showing the percentage of geological composition at each depth with a planar resolution of 250 m mesh and at each depth of 1 m.
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| Free Research Field |
再生可能エネルギー利用, 都市環境, 建築環境, 建築設備
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| Academic Significance and Societal Importance of the Research Achievements |
本研究成果は地域環境―建物―設備―人間という生活環境において近年日本の一次エネルギー消費量の約４０％を占める民生用エネルギー消費量を，地域の再生可能エネルギーで発電われた電力よび地中熱など地域の再生可能エネルギー熱を最大限利用して我々の生活の質を落とすことなく大幅にCO2排出量を最小化し削減する冷暖房・給湯ヒートポンプ，蓄電池充放電などの最適運用システムを構築した．また，地中熱利用に必要な日本全国大深度３次元地盤物性データベースも構築した．これらを公開することによる地中熱・地下水熱利用などを含めた再生可能エネルギー利用熱供給システムの普及拡大に大きく貢献するものと考える．
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