2023 Fiscal Year Final Research Report
Establishment of matrix of indices evaluating performance to support daylighting design for practical application
| Project/Area Number |
20K04812
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | Nippon Institute of Technology |
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Principal Investigator |
Ito Daisuke 日本工業大学, 建築学部, 准教授 (10567978)
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| Co-Investigator(Kenkyū-buntansha) |
松岡 大介 ものつくり大学, 技能工芸学部, 教授 (40808177)
岩田 利枝 東海大学, 工学部, 教授 (80270627)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 建築光環境 / 昼光 / 省エネルギー / 気象データ / 不快グレア / 簡易指標 |
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| Outline of Final Research Achievements |
Experiments and calculations were conducted to demonstrate the energy-saving performance of daylighting equipment and to put the previously proposed visual environment performance evaluation index (uncomfortable glare) into practical use in order to support simple selection and design of daylighting equipment. As a result, the following findings were obtained. (1) Daylight data at 1-second intervals shows little significant fluctuation, even when direct sunlight is included. (2) When using daylight, the performance of air conditioners tended to have a greater impact on energy consumption than the performance of artificial lighting in the case of high-performance glass. (3) The accuracy of the light distribution measurement device using luminance distribution was verified. In addition, luminance distribution data for window surfaces and light ducts, which are diffuse surfaces, were obtained. (4) A method for evaluating discomfort glare from vertical illuminance was proposed.
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| Free Research Field |
建築環境工学
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| Academic Significance and Societal Importance of the Research Achievements |
これまで昼光装置の選択・設計には専門的な知識や高度なシミュレーションを要する必要があった。その為、昼光を詳細に検討することは専門家以外では困難であった。本研究により短時間の変動や人工照明とエアコンの観点から昼光利用時の消費エネルギーについて検討することによって、設計時に昼光利用時に留意する点を示すことが出来た。さらに窓面の配光や鉛直面照度によるグレア評価によって昼光利用時の質を簡易的に予測することが出来るようになった。
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