2001 Fiscal Year Final Research Report Summary
Study on the Built Environmental Systems utilizing the Moderate Fluctuation of Environmental Factors
| Project/Area Number |
11650613
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Architectural environment/equipment
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| Research Institution | Musashi Institute of Technology |
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Principal Investigator |
SHUKUYA Masanori Musashi Institute of Technology, Faculty of Environmental and Information Studies, Professor, 環境情報学部, 教授 (20179021)
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| Project Period (FY) |
1999 – 2001
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| Keywords | Built Environment / Fluctuation / Natural Energy / Exergy / Entropy / Suzusisa / Moderate Brightness / Biological Clock |
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| Research Abstract |
The purpose of this study is to find out both the exergetic characteristics of human body and the characteristics of 'suzusisa' sensation, and to reveal the relationships between the brightness sensation and the biological clock, and thereby to have a better understanding for passive cooling and daylighting design of buildings. Followings are results.
It was found that most of the subjects in a naturally-ventilated room were very sensitive to the fluctuation of the air current in the given thermal environment and at the same time very active in having coolness.
According to the Fourier analysis, normalized air velocity obtained from spectra, the amplitude of the normalized air velocity during the period in which the subject had 'suzusisa' sensation is twice that in which she did not. The characteristics of the wave of the normalized air velocity is to increase suddenly and then decrease exponentially.
It was found that the subjects who used daylight available from the windows can sense 'bright' or 'slightly bright' in the daylighting, and there are most little difference in the period of times between he or she sensed and actual.
Provided that the human body at general office work is exposed to the thermally neutral environment, the thermal and wet exergy of 3 W/m^2 is produced within body, its one-third, namely 1 W/m^2 of the exergy is consumed within the human body. The rest, the thermal and wet exergy of 2 W/m^2, is flowing out toward the environment.
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