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A Study on Thermal and Hygric Behaviors of Clothing and Their Influence on Thermal Environment

Research Project

Project/Area Number 08455268
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Architectural environment/equipment
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

HOKOI Shuichi  Kyoto Univ., Graduate School of Eng., Professor, 工学研究科, 教授 (80111938)

Co-Investigator(Kenkyū-buntansha) SATO Manami  Osaka Institute of Technology, Dept.of Architecture, Lecturer, 工学部建築学科, 講師 (90249780)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1997: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1996: ¥5,200,000 (Direct Cost: ¥5,200,000)
KeywordsClothing / Heat and Moisture Transfer / Thermal Environment / Sweatig / Hygroscopicity
Research Abstract

In order to understand moisture transfer and accumulation in clothing quantitatively, and also to predict an influence of sweat absorption and evaporation on thermal sensation, the followings were investigated.
(1)Examination of moisture diffusivity and the method of measurement
A measuring method of moisture diffusivity including liquid transfer in clothes was investigated under the situation where liquid moisture transfer due to sweating occurs. Since clothes are usually very thin, the validity of an averaging in macroscopic sense is not evident. Thus, this assumption was also examined. Based on these results, the moisture diffusivity was measured both in the direction parallel to the fiber and in the thickness direction. In the measurement of diffusivity parallel to the fiber, infiltration experiments into a cloth kept horizontally were utilized. Since the rate of water absorption was proportional to the root of time, it was concluded that the absorption into the cloth could be expres … More sed as a diffusion process.
(2)Heat and moisture balance in human body taking account of moisture accumulation in clothes
The moisture transfer to and accumulation in clothes, the evaporation after sweating and their influence on thermal sensation were evaluated by making use of a simple thermal model of human body under sweating condition. Based on the Jones' model, an improved version of Gagge's two-node model which deals with a human body as composed of several parts, a simulation model was proposed by taking account of the clothes. The influence that the moisture in the clothes has on thermal balance of human body was discussed.
Furthermore, an experiment with subjects was carried out in an climate chamber. Measurements on sweating process and sorption-desorption process from the clothes were done. The validity of the simulation program was examinde by comparing the measured temperatures of the skin and clothes with the calculated results. It was shown that the contact condition between the skin and clothes and also the fractions of liquid and vapor transfer influence the results significantly. Less

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] M.Matsumoto, et al.: "An Analysis of Coupled Heat and Moisture Transfer in Buildings Considering the Influence of Radiant Heat Transfer" ASHRAE Transactions. 103. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Sato, M.et al.: "A Numerical Analysis of Moisture Condensation Process in the Building Envelope Insulated by Fiberglass (Effect of Natural Convection and Air Filtration)" Proceedings of CLIMA 2000. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 梅野 ら: "着衣における水分の移動と蓄積を考慮した人体の熱環境に対する非定常応答" 人間-生活環境系シンポジウム. 第35号. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 高田 ら: "布の水分移動係数の同定" 熱物性. Vol.12. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Matsumoto, et al: "An Analysis of Coupled Heat and Moisture Transfer in Building Considering the Influence of Radiant Heat Transfer" ASHRAE Transactions. vol.103. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Sato, et al.: "A Numerical Analysis of Moisture Condensation Process in the Building Envelope Insulated by Fiberglass (Effect of Natural Convection and Air Filtration)" Proceedings of CLIMA. 2000. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Umeno, et at.: "Transient Response of Human Body to Thermal Environment, Considering the Moisture Movement and Accumulation in Clothes" Proceedings of The 21^<st> Symposium on Human-Environment System. Vol.35. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Takada, et al.: "Determination of Water Diffusivity of Cloth" Netsu Bussei. Vol.12. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Matsumoto, et al.: "An Analysis of Coupled Heat andMoisture Transfer in Buildings Considering the lnfluence of Radiant Heat Transfer" ASHRAE Transactions. 103. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sato,M.et al.: "A Numerical Analysis of Moisture Condensation Process in the Building Envelope Insulated by Fiberglass (Effect of Natural Convection and Air Filtration)" Proceedings of CLIMA 2000. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 梅野ら: "着衣における水分の移動と蓄積を考慮した人体の熱環境に対する非定常応答" 人間-生活環境系シンポジウム. 第35号. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 高田ら: "布の水分移動係数の同定" 熱物性. Vol.12. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Matsumoto,et al.: "An Analysis of Coupled Heat and Moisture Transfer in Buildings Considering the Influence of Radiant Heat Transfer," ASHRAE Transactions. 103. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Sato,M.et al.: "A Numerical Analysis of Moisture Condensation Process in the Building Envelope Insulated by Fiberglass (Effect of Natural Convection and Air Filtration)" Proceedings of CLIMA 2000. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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