This paper explains an addition to a larger NPL project with the purpose to validate the use of the transient contact-probes for measurement of the thermal conductivity of soft solids such as foods, powders, and biological materials. Transient line source methods are used in this paper to accurately measure the thermal conductivities of a large variety of materials. More attention is paid ...
Metal hydrides (MHs) have been considered as thermal energy storage (TES) materials for concentrated solar thermal applications. In this study, a TES system based on MgH2 was designed, constructed and optimized. The thermal conductivity of the MgH2/TiB2/ENG powder was measured using the transient plane source technique. It was found that the thermal conductivity of a MgH2/TiB2/ENG pellet pressed at 223 MPa for 5 minutes and measured in the ...
This article studied the properties of two compositions of cermet fuels, U-15wt%UO2 and U-30wt%UO2. The thermal conductivity of the sintered cermets was determined by the transient plane source (TPS) technique using a Thermal Constant Analyzer. It was found that the thermal conductivity increased for both of the cermet compositions with increasing temperature. This was considered to be favorable as higher thermal conductivities ...
This study is to determine the thermal properties of a paraffin/red brick composite to determine its viability as a form-stable phase change material. Extended graphite was also added to the composite to improve its thermal conductivity. The thermal conductivity for this material was measured using a transient plane source (TPS) method. By adding the paraffin, the thermal conductivity of the composite increase, also by adding extended graphite the thermal ...
The purpose of this study was to measure the thermal properties of ammonia borane and polyiminoborane with the transient plane source (TPS) method to analyze their applicability to heat storage systems. Tests results showed that the thermal diffusivity and thermal conductivity of ammonia borane increased as porosity of the samples decreased. Alternatively, both thermal properties of polyiminoborane increased with porosity, and thermal conductivity values were significantly lower than those obtained ...
