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Analysis of Heat Transfer Mechanism of Clothing Materials in Relation of High Insulation Performance

Research Project

Project/Area Number 02808010
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 家政学
Research InstitutionHokkaido University of Education

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)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1991: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1990: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsClothing Materials / Radiative Heat Transfer / Heat Transfer Mechanism / Thermal Insulation / Air Passage / High Porosity / Air Permeability / radiative heat transfer / fiber assembly / air permeability / emissivity / effective thermal conductivity
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.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 藤本 尊子: "被服材料における熱輸送の特性" 日本熱物性学会誌. 5. 23-30 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 藤本 尊子: "繊維集合体の通気性の解析と熱移動特性との関係" 日本繊維機械学会誌. 44. T183-T191 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Takako Fujimoto: "Thermal Characteristics of Clothing materials" Japan Journal of Thermophysical Properties. 5-1. 23-30 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Takako Fujimoto: "Estimation of Air Permeability of Fiber Assemblies and Its Relation to Heat Transmission Properties" Journal of the Textile Machinery Soc. of Japan. 44-9. T183-T191 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Fujimoto Takako: "Evaluation of Heat Transfer Characteristics of Clothing Materials" Proceedings of the 19th Textile Research Symposium. 59-62 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Fujimoto Takako: "Evaluation of Air Permeability of Fiber Assemblies and Effects on the Thermal Insulation" Proceedings of the Eleventh Japan Symposium on Thermophysical Properties. 345-348 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 藤本 尊子: "被服材料における熱輸送の特性" 日本熱物性学会誌. 5. 23-30 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 藤本 尊子: "繊維集合体の通気性の解析と熱移動特性との関係" 日本繊維機械学会誌.

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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