1991 Fiscal Year Final Research Report Summary
Analysis of Heat Transfer Mechanism of Clothing Materials in Relation of High Insulation Performance
| Project/Area Number |
02808010
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
家政学
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| Research Institution | Hokkaido University of Education |
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Principal Investigator |
FUJIMOTO Takako Hokkaido University of Education, Iwamizawa Campus Faculty of Education, Associate Professor, 教育学部岩見沢分校, 助教授 (00115073)
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| Project Period (FY) |
1990 – 1991
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| Keywords | Clothing Materials / Radiative Heat Transfer / Heat Transfer Mechanism / Thermal Insulation / Air Passage / High Porosity / Air Permeability |
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| Research Abstract |
Heat transfer from the human body through clothing materials is a complex phenomena, affected by numerous factors such as the structural properties of materials. the amount of air in fabrics and on the skin, and the air motion in the exterior. In order to establish an evaluation system of various clothing materials for thermal comfort, therefore, it is indispensable not only to elucidate thermal properties of clothing materials themselves but also to understand the thermal behavior of system as a whole, which simulates the heat transfer from the human body to the atmosphere through fabrics and air beneath it. In this study, to provide the basic data necessary for proper understanding of the roles of the mechanism of heat transfer and of the performance of the thermal insulation. the thermal properties and air permeability of the insulating clothing materials are investigated. The insulation clothing materials are characterized by the high porosity, usually over 70%. In the composite systems of air and materials having such high porosity, the radiative heat transfer and air passage through materials play important roles on the performance of thermal insulation. Such modes of heat transfer mechanism were discussed and their characteristics were elucidated, both theoretically and experimentaly.
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