Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Studies on the Thermal Characteristics and the Warmth Retaining Properties of Non-woven Fabric(II) -On the Change of Fabric Packing Density According to the Air Velocity-

부직포의 열적 특성과 보온성에 관한 연구(II) -풍속에 따른 충전 용도 변화에 대하여-

  • Kim, Dae-Seong (Dept. of Textile Eng., College of Eng., DanKook Univ.) ;
  • Park, Myung-Soo (Dept. of Textile Eng., Kyungpook Polytechnic Univ.) ;
  • Shin, Hyun-Sae (Dept. of Textile Eng., College of Eng., DanKook Univ.) ;
  • Joo, Kang (Dept. of Textile Eng., College of Eng., DanKook Univ.)
  • 김대성 (단국대학교 공과대학 섬유공학과) ;
  • 박명수 (경북 산업대학 섬유공학과) ;
  • 신현세 (단국대학교 공과대학 섬유공학과) ;
  • 주강 (단국대학교 공과대학 섬유공학과)
  • Published : 1989.02.01

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Abstract

Effects of air velocity and packing density under controlled heating and constant heat flow on thermal insulation of nonwoven fabrics were studied. Results obtained can be summarized as follows; 1. Thermal insulation should be considered in terms of air velocity, packing density, time required to reach thermal equilibrium and thermal behavior. 2. Time for thermal equilibrium decreases with increasing air velocity and decreasing packing density, respectively, while it increases with increasing packing density. 3. Thermal insulation is fairly sensitive to increasing packing density at the air velocity of 0.5m/sec while it becomes less sensitive to increasing air velocity, representing almost constant values at the air velocity of more than 2.0m/sec. 4. Thermal insulation effeciency of nonwoven fabrics makes than 10 percent, providing unfavorable thermal insulation effect.

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