Investigation on Radiative Heat Transfer through Fiber Assemblies Using FTIR Method

摘要：

Radiative heat transfer could be a significant contribution to the total heat transfer within these highly porous media. The paper reports on the use of a conventional instrument, viz. Fourier transform infrared (FTIR) spectroscopy, for the characterization of radiative heat properties of fiber assemblies. Experimental measurements on spectral transmission with FTIR were performed on four types of fiber assemblies commonly used for insulating materials. From the measurements, radiative heat conductivity were determined by calculating extinction coefficient using Beers Law and applying the diffusion approximation approach. Fiber radius and fiber assembly density are the two important factors affecting radiative heat transfer. The coarser the fiber, the higher the radiative heat transfer. Radiative heat transfer decreased with the increase of fiber assembly density.

关键词： radiative heat transfer FTIR fiber assembly fiber type bulk density

作者: SONG Wenfang YU Weidong

作者单位: Textile materials and technology laboratory, Donghua University, Shanghai 201620, P.R.China Textile materials and technology laboratory, Donghua University, Shanghai 201620, P.R.China College

会议类型: 国际会议

会议名称: The 12th International Wool Research Conference(第十二届国际羊毛会议12th IWRC)

会议地点: 上海

会议语种:英文

页码: 706-709

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）