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Effect of Air Permeability of Textile Fabrics on heat and Moisture Transfer Properties

Research Project

Project/Area Number 62460227
Research Category

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

Allocation TypeSingle-year Grants
Research Field 家政学
Research InstitutionNara Women's University

Principal Investigator

NIWA Masako  Faculty of Home Economics, Nara Women's University, Professor, 家政学部, 教授 (80031665)

Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1988: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1987: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsAir Permeability / Resistance of Air Penetration / Thermal Resistance of Fabrics / Heat Loss of Fabrics / Resistance of Moisture Taansfer of Fabrics / Prediction of Air Permeability of Multi-layered Fabrics / Simulations Heat and Moisture Transfer / 衣服内空気の熱抵抗 / 繊維集合体の通気機構 / 布の通気機構 / 熱・水分同時移動 / 重ね布の通気性予測・衣服内空気の熱抵抗 / 衣服内気候の予測 / 繊維集合構造パラメータ / 布の通気性 / 通気抵抗度 / 衣服の換気効果 / 布の熱抵抗性 / 繊物構造体の通気機構
Research Abstract

Most of clothing materials consist of fiber and air space. Fabrics are air-permeable because of its air space. This property closely related both with the heat and moisture transfer through fabrics. Particularly, when wind penetration occurs through the clothing system, the resistance of heat and moisture transfer of the system decrease with increasing air velocity.
in order to provide the basic design information of insulating fabrics, the equations predict-ing the steady heat transfer from the heated plate (30 ゜C) to the surroundings (20 ゜C) through fabrics have been obtained by the experiment and the simple heat transfer model. For impermeable materials, the effects of emissivity, thermal resistance of materials, the size of air gap, and wind velocity on the heat transfer have been discussed. For the fabrics, especially, the effect of air permeability on the heat transfer has been discussed.
The empirical equation of the moisture has been obtained for hygrohobic fabrics. The effect of air permeability on moisture transfer begins to be displayed at the wind penetration rate of 1.58 x 10^<-3> m/s. This result means that air permeability plays a more important role in moisture transfer even at lower wind velocity. The air permeability of fabrics is one of the essential property to describe the performance of fabrics used for the clothing material.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 中西正恵,丹羽雅子: 日本家政学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 中西正恵,丹羽雅子: 日本家政学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 藤本尊子,丹羽雅子: 繊維機械学会誌論文集. 42. 63-71 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 藤本尊子,丹羽雅子,関信弘: 繊維機械学会誌論文集.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 藤本尊子,鋤柄佐千子,丹羽雅子: 繊維製品消費科学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T.,Fujimoto;M.,Niwa;N.,Seki: Proceedings of the 9th Japan Symposium on Thermophysical Propesties(日本熱物性研究会). 53-56 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Masae,Nakanishi; Masako Niwa: "Studies on the Air Permeability of Clothing Material Part I: Air Resistance of Clothing Materials of the Different End-uses" Journal of Home Economics of Japan. 40. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Masae,Nakanishi; Masako,Niwa: "Studies on the Air Permeability of Clothing Material Part II: Effect of Fiber Geometry on the Air Permeability of Fiber Assembly" Journal of Home Economics of Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Takako,Fujimoto; Masako,Niwa: "Experimental Study on Effective Thermal Conductivity of Fiber Assembly Part I: Evaluation of Anisotropic Effective Thermal Conductivity and Role of Radiative Heat Transfer" Journal of The Textile Machinery Society of Japan. 42. 27-35 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Takako,Fujimoto; Masako,Niwa: "Experimental Study on Effective Thermal Conductivity of Fiber Assembly Part II: Effect of Air Passage on Thermal Insulation of Clothing Materials" Journal of the Textile Machinery Society of Japan. 42. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Takako,Fujimoto; Sachiko,Sukigara; Masako,Niwa: "The Evaluation of Performance of Women"s Panty Hoses Part III: Basic Thermal Properties and the Effect of Area Enlargement of Fabric on Thrmal Insulation" Journal of the Japan Research Association for Textile End-Uses.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 藤本尊子,丹羽雅子: 繊維機械学会誌論文集. 42. 63-71 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 藤本尊子,丹羽雅子,関信弘: 繊維機械学会誌論文集.

    • Related Report
      1988 Annual Research Report
  • [Publications] 藤本尊子,鋤栖佐千子,丹羽雅子: 繊維製品消費科学会誌.

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Fujimoto;M.Niwa;N.Seki: Proceedings of the 9th Japan Symposium on Thermophysical Properties(日本熱物性研究会). 53-56 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 中西正恵,丹羽雅子: 日本家政学会誌.

    • Related Report
      1988 Annual Research Report
  • [Publications] 坂口晴子: 日本繊維機械学会,HESC Te nical Report.No74. 9-18 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 丹羽雅子: 日本繊維機械学会,HESC Tecbmical Report No.75. 9-17 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 丹羽政子: 日本繊維機械学会,HESC Technical Report No.76. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 中西正恵: 第11回繊維連合研究発表会発表,日本繊維機械学会.

    • Related Report
      1987 Annual Research Report
  • [Publications] 丹羽雅子: 日本家政学会誌.

    • Related Report
      1987 Annual Research Report
  • [Publications] 丹羽雅子: 日本家政学会誌.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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