To study thermal properties of various solids

Abstract

Thermal conductivity, thermal diffusivity and specific heat per unit volume of solids (rocks) at room temperature have been measured using Transient Plane Source (TPS) technique. The TPS-element is used both as a constant plane heat source and a sensor of temperature. The measurements were made on five samples, taken from north of Khewra town (at various positions from the base of sandstone). The vru·iation of thennal conductivity as a function of position (from base) is reported. The porosity, chemical composition and x-ray diffraction of the samples as a function of position were determined. The effect of these parameters on thennal conductivity is also discussed