2021 Fiscal Year Final Research Report
Verification of smoke exhaust properties in common corridors using turbulence analysis and development of its simple optimum design method
| Project/Area Number |
19K04728
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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 | Mie University |
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Principal Investigator |
NAGAI HISAYA 三重大学, 工学研究科, 教授 (40283402)
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| Co-Investigator(Kenkyū-buntansha) |
岩田 剛 三重大学, 工学研究科, 技術専門員 (20636542)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 中廊下 / 自然排煙 / 機械排煙 / 給気口 / CFD |
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| Outline of Final Research Achievements |
The purpose of this study is to quantitatively examine the smoke exhaust properties for the purpose of establishing a simple design method for natural smoke exhaust and mechanical smoke exhaust methods installed in safe areas such as central corridors of apartment buildings, office buildings and so on.
When installing natural smoke exhaust equipment in a straight middle corridor, which is an important evacuation route in the fire, either provide natural smoke exhaust outlets with more than legal area at both ends of it, or provide a lower fresh air inlets for smoke exhaust. However, if outside air with a natural wind speed is generated parallel to the opening surface, the smoke exhaust efficiency will decrease, so it is necessary to install sleeve walls of appropriate size on both sides of it. On the other hand, when providing mechanical smoke exhaust, it is necessary to provide some fresh air inlets for smoke exhaust, and the appropriate opening area has been clarified.
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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 |
排煙設備は機械排煙方式と自然排煙方式に大別され、それぞれその設置に当たってはその設置や構造に定量的な法的基準が設けられている。しかしながら、例えば「自然排煙方式の場合には、排煙口の面積は防煙区画された部分の床面積の１／５０以上とする」といった理論的な根拠が不明である基準が多数あり、これら基準を一つ一つ明確にし、その基準を改定していく必要は非常に重要である。本研究では、火災時の避難安全上極めて重要な避難経路である中廊下に設ける排煙設備の設置条件をCFD解析により定量的に検討し、その新たな基準となるべき条件を明確化を目的としておりその社会的、学術的意義は高いと考える。
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