Influence of Density on the Thermal Conductivity of Fiberglass Felt


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The influence of density on the thermal conductivity of fiberglass felt is studied by experiment.Experimental data obtained using the coefficient of thermal conductivity measuring instrument(Germany Netzsch HFM 436).The results show that the thermal conductivity of the low-density fiberglass felt increases with the increasing of density,when the density of fiberglass felt is below a certain value,the thermal conductivity is tend to a stable value.At last the conclusion that using the heat-transfer mechanism of the porous materials explains this phenomenon has also been drawn by experiment.



Edited by:

Dayun Xu




Y. Yang et al., "Influence of Density on the Thermal Conductivity of Fiberglass Felt", Advanced Materials Research, Vol. 628, pp. 33-36, 2013

Online since:

December 2012




[1] N.E. WIJEYSUNDERA and M.N.A. HAWLADER: Effects of condensation and liquid transport on the thermal performance of fibrous insulations, Heal Mass Transfer. Vol. 35, No. l0, pp.2605-2616, (1992).


[2] T. Ohmura1, 2, M. Tsuboi1 and T. Tomimura3: Estimation of the Mean Thermal Conductivity of Anisotropic Materials. International Journal of Thermophysics, Vol. 23, No. 3, May 2002(©2002).

[3] ARTHURL. LOEB: Thermal Conductivity: VIII, A Theory of Thermal Conductivity of Porous Materials, Journal of the American Ceramic Society-Loeb, Vol. 37, No. 2. p.96.


[4] Moran Wang, Jihuan He, Jianyong Yu, Ning Pan: Lattice Boltzmann modeling of the effective thermal conductivity for fibrous materials, International Journal of Thermal Sciences 46(2007)848–855.


[5] M.G. Kaganer, Heat Insulation in Low-Temperature Technology [in Russian], Mashinostroenie, Moscow(1966).

[6] J. FRANCL and W.D. KINGERY: Thermal Conductivity: IX, Experimental Investigation of Effect of Porosity on Thermal Conductivity, Journal of The American Ceramic Society-Francl and Kingery, Vol. 37, No. 2, p.99.