This article is cited in 23 papers

Semiconductors

Contribution of thermal radiation in measurements of thermal conductivity of sandstone

Yu. P. Zarichnyak^a, A. È. Ramazanova^b, S. N. Emirov<sup>b

a</sup> St. Petersburg National Research University of Information Technologies, Mechanics and Optics
^b Institute of Geothermy Problems, Makhachkala

Abstract: The effective thermal conductivity of sandstone at high pressures of up to 400 MPa and temperatures of 273–523 K has been studied. It has been shown that the degree of crystallization of rock-forming minerals substantially influences the temperature and pressure dependences of the thermal conductivity. The contribution of the radiation heat transfer in measurements of the thermal conductivity of sandstone at various temperatures has been analyzed taking into account the reflection and attenuation of the thermal radiation. The results of measuring the reflection and absorption spectra of the thermal radiation have been presented.

Received: 22.04.2013

 English version: Physics of the Solid State, 2013, 55:12, 2436–2441

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