2021 Fiscal Year Final Research Report

Development of window treatment and thermal storage components suitable for utilization of solar radiation, daylighting, and natural ventilation, and design support by CAD environmental indices

Research Project

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Project/Area Number	19H02295
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Review Section	Basic Section 23020:Architectural environment and building equipment-related
Research Institution	The University of Tokyo
Principal Investigator	MAE Masayuki 東京大学, 大学院工学系研究科(工学部), 准教授 (90391599)
Co-Investigator(Kenkyū-buntansha)	高瀬幸造東京理科大学, 理工学部建築学科, 講師 (20739148) 井上隆東京理科大学, 理工学部建築学科, 教授 (30151608) 吉澤望東京理科大学, 理工学部建築学科, 教授 (40349832) 谷口景一朗東京大学, 大学院工学系研究科(工学部), 特任助教 (80746496) 二宮秀與鹿児島大学, 理工学域工学系, 教授 (90189340)
Project Period (FY)	2019-04-01 – 2022-03-31
Keywords	日射熱利用 / 昼光利用 / 自然通風 / 開口部 / 潜熱蓄熱材 / プライバシー性 / シミュレーション
Outline of Final Research Achievements	In order to improve the thermal and light environment inside the house and to realize energy saving in heating, cooling, and lighting, we developed quantitative evaluation and design methods for the following openings. (1) For PCM, we proposed the most effective location of the PCM based on its heat storage rate. (2) We verified the validity of the calculation method of heat transfer coefficient and solar heat gain coefficient for openings with exterior roll screens using a full-scale experimental building. (3) For openings with roll screens, we proposed a method to measure the heat gain by separating the heat gain into transmission, convection, radiation, and ventilation components. (4) We showed that the clarity of a window with a roll screen can be evaluated by an edge detection algorithm that includes a texture perception mechanism.
Free Research Field	熱環境
Academic Significance and Societal Importance of the Research Achievements	日射熱・昼光・自然風を開口部から積極的に取得または遮蔽するパッシブ技術を有効に利用することを目的として、住宅設計者が開口部の部材選択や配置を検討する際に必要となる、日射熱・昼光・自然風の定量的な評価・設計手法を提案した。また、プライバシー性などに配慮した、住民が安心して日射取得や採光・通風を利用できる開口部を設計できるようにすることで、実効性のある環境配慮型設計を実現するための基礎データを整備した。