Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Natural Convection for Air-Layer between Body Skin and Clothing with Considering Coefficient of Permeability

투과계수를 고려한 의복과 인체 사이의 공기층에서 자연대류 특성

  • 지명국 (경상대학교 대학원 정밀기계공학과) ;
  • 배강렬 (경상대학교 대학원 정밀기계공학과) ;
  • 정효민 (경상대학교 수송기계공학부·해양산업연구소) ;
  • 정한식 (경상대학교 수송기계공학부·해양산업연구소) ;
  • 추미선 (경상대학교 의류학과)
  • Published : 2001.12.01
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Abstract

This study presents the numerical analysis of natural convection of a micro- environments with air permeability in the clothing air-layer. As a numerical model the clothing air layer of shoulder and arm were adopted. Finite volume method for two-dimensional laminar flow was used for the analysis of flow and thermal characteristics of velocity, temperature and concentration in the air layer between body and clothing. As temperature boundary conditions, a body skin has a high temperature with $34^{\circ}C$ and the environmental temperatures are 5, 15 and $25^{\circ}C$ for various permeability coefficients. The distributions of concentration, temperature and velocity are shown that two large cells form at horizontal and vertical air layer, respectively. As the temperature difference between body skin and environment decreases, the heat transfer is decreased rapidly.

Keywords

References

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