THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

On the temperature and pressure dependences of the effective thermal conductivity of granites

ABSTRACT
The results of experimental measurements of the temperature dependence of the effective thermal conductivity of various granite samples obtained by the absolute stationary method in the temperature and pressure ranges of 273- 523 K and 0.1-400 MPa, respectively, are analyzed. The power-law character of the temperature dependence of the effective thermal conductivity for all measured granite samples at atmospheric pressure is established. We have shown that pressure significantly affects the power law of the temperature dependence of the effective thermal conductivity of granite samples. A low-parameter description of the temperature-pressure behavior of thermal conductivity is proposed. A correlation is established between its components.
KEYWORDS
PAPER SUBMITTED: 2020-04-08
PAPER REVISED: 2020-04-23
PAPER ACCEPTED: 2020-04-28
PUBLISHED ONLINE: 2020-05-02
DOI REFERENCE: https://doi.org/10.2298/TSCI200408176E
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