| Project/Area Number |
15560515
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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 | Miyagi gakuin women's university |
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Principal Investigator |
HAYASHI Motoya Miyagi gakuin women's university, dept. of living and cultural science, Professor, 学芸学部生活文化学科, 教授 (40320600)
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| Co-Investigator(Kenkyū-buntansha) |
HONMA Yoshinori Iwate prefecture university, Morioka junior college, associate professor, 盛岡短期大学部, 助教授 (90331272)
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2005: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2003: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | cross ventilation / ventilation / indoor air quality / field survey / auto recording |
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| Research Abstract |
The aim of this research is to clear the long term chemical pollution in houses considering the peoples behaviors in houses as operating windows, operating heating systems. At first, a measurement instrument to record the width of openings is made and the performances were investigated using houses. And the instrument was enough useful to use in general houses with the dwellers. The questioner survey was made to know the data of houses and their living style.
The changes of opening width of windows were measured in 13 houses. The indoor and outdoor temperatures, these humilities and the concentrations of formaldehyde and carbon dioxide in rooms were also measured in three houses. These measurements showed that the people dos not open windows even in the mild seasons because of thief life style and the condition of the surroundings. These results showed that the risk of the indoor air pollution increases in the middle seasons.
A simulation program : Fresh 2006 was improved to show the annual change of the indoor concentrations and the temperatures considering the habits of opening windows. And the leakage networks which were measured using structure models were used and the infiltration rates from the concealed pollution sources for example, the chemical compound to terminate termites to indoor spaces were calculated using the program.
The results showed the followings. The infiltration from the concealed spaces was one of the important factors to make the indoor air quality. In the case of exhaust ventilation, this factor became more important. The concentrations of most pollutants become low in summer and become high again in autumn. But in the case formaldehyde, the concentration does not become high in autumn because the ability of the emission form building materials as plywood was reduced by opening windows in summer.
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