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Study on radiative heat transfer property of fiber assemblies using FTIR

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Abstract

Radiative heat transfer could be a significant contribution to the total heat transfer within the highly porous materials. This article reports on the use of a conventional instrument, viz. Fourier transform infrared (FTIR) spectroscopy, for the characterization of radiative heat properties of fiber assemblies with low bulk densities. Experimental measurements on spectral transmission with FTIR were performed on five types of fiber assemblies commonly used for insulating materials. From the measurements, radiative heat conductivity was determined by calculating extinction coefficient using Beer’s Law and applying the diffusion approximation approach. Bulk density, fiber arrangement, and temperature influences to radiative heat transfer were discussed. Results show that radiative heat conductivity decreases with bulk density and that of the random arranged fiber assemblies shows lower radiative heat conductivity than the random ball and parallel arranged fiber assemblies. Radiative heat conductivity is proportional to the cubic temperature. The existing theoretical model was modified by comparing theoretical and experimental radiative heat conductivity results.

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Authors and Affiliations

  1. Textile Materials and Technology Laboratory, Donghua University, Shanghai, 201620, People’s Republic of China

    W. F. Song & W. D. Yu

  2. College of Garment & Art Design, Jiaxing University, Jiaxing, Zhejiang, 314001, People’s Republic of China

    W. D. Yu

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  1. W. F. Song
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  2. W. D. Yu
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Correspondence to W. D. Yu.

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Song, W.F., Yu, W.D. Study on radiative heat transfer property of fiber assemblies using FTIR. J Therm Anal Calorim 103, 785–790 (2011). https://doi.org/10.1007/s10973-010-1025-0

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  • DOI: https://doi.org/10.1007/s10973-010-1025-0

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