Effect of Structural Ordering, Temperature, and Pressure on Processes of Heat Transfer in Minerals and Alloys

Abstract

The efficient thermal conductivity of sandstone is measured in the 273-523 K range of temperatures at pressures of 0.1-400 MPa. Based on an analysis of the available literature data and experimental results, it is shown that the temperature dependence of efficient thermal conductivity for disordered media does not obey the laws of Aiken and Debye. A mathematical model is proposed that describes the power temperature dependence of the efficient thermal conductivity of disordered media. The relationship between the exponent of this dependence and structural disorder is revealed.