• 제목/요약/키워드: Clothing insulation$(I_{cl})$

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Layering Effects on Clothing Microclimate, Clothing Insulation and Physiological Responses

  • Park, Joonhee;Yoo, Shinjung
    • International Journal of Human Ecology
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    • 제14권2호
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    • pp.93-103
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    • 2013
  • This study investigated the relationship of clothing microclimate and physiological responses in order to examine the layering effects on the clothing microclimate as an index to predict clothing thermal insulation ($I_{cl}$). Experiments were conducted in a $15^{\circ}C$ environment on six physically active males. Increased clothing layers resulted in higher mean temperature inside the clothing ($\bar{T}_{cl}$) and $I_{cl}$. The $I_{cl}$ had a high correlation with: $\bar{T}_{cl}$ (r = 0.556), the difference between the innermost surface temperature and the outermost surface temperature at the chest (DST) (r = 0.549) and the temperature inside clothing at the abdomen (r = 0.478). $\bar{T}_{cl}$ had the highest correlation with the temperature inside clothing at the abdomen (r = 0.889). $\bar{T}_{cl}$ also had the highest correlation with $\bar{T}_{sk}$ (r = 0.860). The results showed that the relationship between $I_{cl}$ and $\bar{T}_{cl}$ was linear (p < .01). Thermal comfort had a negative correlation with $\bar{T}_{cl-thigh}$ (r=-0.411) and $\bar{T}_{cl}$ (r = -0.323) (p < .01.)

스커트의 열특성에 관한 연구 (A Study on the Thermal Properties of Skirts)

  • 최혜선
    • 한국의류학회지
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    • 제13권4호
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    • pp.388-399
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    • 1989
  • The purpose of this study was to investigate the effects of garment design, fabric type and the presence of lining on the thermal insulation value $(I_{cle}\;and\;I{cl})$ and clothing area factor $(f_{cl})$ of skirts. A standing, electrically heated thermal maninkin was used to measure the insultation value of eighty skirts-five skirt styles with eight different fabrics, with and without lining. The air temperature of the chamber was set at $22.2^{\circ}C{\pm}0.5^{\circ}C$ , air velocity was limited to less than 0.1 m/s, and relative humidity was approximately $50\%$. The results are as follows: 1) The Ic, values of gathered skirt and flared skirt, which had high $f_{cl}$ values, were significantly higher than those of other skirts, though the highest $I_{cle}$ value among five styles wer pegged skirt. 2) Insulation values of various skirts were more relevant with physical properties such as thickness, air permeability, and thermal transmission of the materials rather than fiber content. 3) The addition of lining made significant difference in the insulation values of skirts and the differences of gathered and flared skirt were significantly higher than those of othere types of skirts.

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쾌적한 상태에서 계절별 의복을 착용하고 있는 동안 불감증설과 온열 생리 요소들 간의 관련성 (Relationships between Insensible Perspiration and Thermo Physiological Factors during Wearing Seasonal Clothing Ensembles in Comfort)

  • 이주영;최정화;박준희
    • 한국의류학회지
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    • 제31권12호
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    • pp.1700-1709
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    • 2007
  • 본 연구의 목적은 계절별 의복을 착용하고 쾌적한 상태를 유지하는 동안 불감체중손실과 온열 생리적 요소들간의 관련성을 살펴보는 것이다. 이를 위해 한국의 계절별 실내 환경이 인공기후실에 조성되었고 (봄/가을 환경 기온 평균 22.5, 여름 24.7, 겨울 16.8), 설문조사를 바탕으로 총 26 종의 계절별 한벌의복이 선정되었다(봄/가을 옷 8종, 여름 옷 7종, 겨울 옷 11종). 다섯 명의 젊은 여성이 피험자로 참여하였으며, 결과는 다음과 같다: 1) 불감체중손실(IL)은 봄/가을 의복을 착용한 경우 $19{\pm}5g{\cdot}m^{-2}{\cdot}hr$, 여름 옷 $21{\pm}5g{\cdot}m^{-2}{\cdot}hr$, 겨울 옷 $18{\pm}6g{\cdot}m^{-2}{\cdot}hr$으로, 겨울 환경보다 여름 환경에서 더 컸다(p<.001). 2) 호흡기를 통한 불감수분손실(IWR)은 불감체중손실과 반대의 경향을 보여 주어, 겨울옷을 입은 경우 $6{\pm}1g{\cdot}m^{-2}{\cdot}hr$, 여름 옷을 입은 경우 $5{\pm}1g{\cdot}m^{-2}{\cdot}hr$ 였다(p<.001). 3) 불감수분손실 (IW)에서 호흡기를 통한 불감수분손실이 차지하는 비중은 여름 옷을 착용한 경우 평균 28%, 겨울 의복의 경우 38%였다(p<.001). 4) 쾌적한 상태에서, 산열량 중 불감수분손실이 차지하는 비율은 봄/가을 의복을 착용한 경우 25%, 여름옷의 경우 27%, 겨울옷의 경우 23%였다. 5) 불감체중손실과 의복의 보온력 간, 그리고 불감체중손실과 피복면적 간에는 모두 약한 역상관 관계가 관찰되었다. 6) 불감체중손실은 기온, 기습, 에너지 대사, 환기량, 평균피부온도, 의복내 습도 등의 요소와 유의한 상관을 보였으나, 상관계수들은 모두 0.5 이하였다. 결론적으로, 불감체중손실과 온열 생리 요인들 간에는 약한 상관이 존재했으나, 피험자들이 온열 쾌적을 유지하는 경우 착용한 의복 종류 및 노출 기온에 상관없이 불감체중손실량은 좁은 범위를 유지했다.