Compacted bentonite and a bentonite–sand mixture have been considered as a potential buffer material for nuclear waste stored underground. The effects of dry density, water content and sand fraction on the thermal conductivity of the mixtures were investigated via data collected with the transient line source technique. With those parameters known, a single expression for the thermal conductivity of the mixture ...
Proton exchange membranes (PEM) are important components of proton exchange membrane fuel cells (PEMFC) which could potentially substitute fossil energy. The purpose of this study was to theoretically and experimentally study how the thermal conductivity of the PEM, Nafion 117, is related to water content and temperature. A thermal analyzer measured the thermal conductivity of dry Nafion 117 using the transient plane source (TPS) method. Results showed that, as predicted, the thermal ...
Understanding the thermal properties of soils is important for applications in agronomy and engineering. The aim of this study was to examine the thermal properties of volcanically-derived Chilean soils using the Transient Plane Source (TPS) method. Results showed that thermal conductivity decreased with water content and with increasing amounts of organic carbon. Alternatively, soils with increased concentrations of crystalline compounds exhibited higher thermal conductivities. Results of this paper conclude that ...
