熱伝達率を加味した平均皮膚温の算出式  [in Japanese] Fundamental Study of Weighting Factor for Calculating Mean Skin Temperature  [in Japanese]

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Abstract

平均皮膚温の算出式として総合熱伝達率比と皮膚面積比の積で表される加重式を提案した。人体と環境の熱平衡式を基に平均皮膚温を算出する式を導くと,皮膚の面積比のみならず各部位と全身の総合熱伝達率の比をも含む形式となった。本研究では,サーマルマネキンを用いて,局所及び全身の総合熱伝達率を求める実験を,立位及び椅座状態で行った結果から,面積比と総合熱伝達率比より構成される加重係数の実測値が求められたが,従来の面積比のみの係数に比べると四肢部の係数が大きくなった。また新たな加重係数を用いて平均皮膚温と放熱量を算出し,他の平均化式を用いた場合との比較検討を行った。

It is said that mean skin temperature correlates closely with thermal sensation. As local skin temperatures are not uniform, when thinking about heat exchange between the human body and the environment and thermal sensation in the entire human body, we have to average local skin temperatures according to some method. Skin temperature is the result of heat exchange between the human body and the surroundings. When we calculate a formula for heat equilibrium between the human body and the environment, it turns out that the formula for mean skin temperature includes the ratios for both skin area and the combined heat transfer coefficient. Recently, a thermal manikin that expresses the heat characteristics of the human body was developed. In this study, we measured local combined heat transfer coefficients with a thermal manikin and calculated new weighting factors for the formula for mean skin temperature. The results obtained in the present study are as follows: 1) When the formula for mean skin temperature is used, the total combined heat transfer coefficient for the human body has to average local combined heat transfer coefficients according to the weighting factor for the surface area. 2) It was found that this weighting factor does not depend on both the air velocity and the difference between the skin surface temperature and air temperature. 3) A new weighting factor for mean skin temperature has been proposed.

Journal

  • Journal of human and living environment

    Journal of human and living environment 8(1-2), 33-40, 2001

    Japanese Society of Human-Environment System

References:  11

Cited by:  2

Codes

  • NII Article ID (NAID)
    110008447521
  • NII NACSIS-CAT ID (NCID)
    AA11443337
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1340-7694
  • NDL Article ID
    5868093
  • NDL Source Classification
    ZE5(社会・労働--社会問題・社会保障)
  • NDL Call No.
    Z6-B695
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
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