Thermal Conductivity of a Glass: II. The Empirical Model

Author: van der Tempel L.

Source: Glass Physics and Chemistry, Volume 28, Number 3, May 2002 , pp. 147-152(6)

Publisher: MAIK Nauka/Interperiodica

Abstract:

The temperature-dependent thermal (phonon) conductivity of solid and molten glasses is simulated using a simple empirical model. The power model (T) = 1.68[C_p (T)/(T)]^0.38, which relates the thermal conductivity and the ratio of the specific heat to the density, adequately describes more than half the available experimental data. The standard deviation of the calculation from the experiment is equal to 12%. This accuracy is close to the accuracy of currently available additive models for calculating the thermal conductivity from the composition. The proposed model predicts that the thermal (phonon) conductivity of molten silicate glasses is virtually temperature independent.

Language: English

Document Type: Regular paper

Affiliations: 1: Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven, the Netherlands

Publication date: 2002-05-01

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