Join us at the International Thermal Conductivity Conference (ITCC) and the International Thermal Expansion Symposium (ITES).
The use of sensors for the determination of content ratio in binary mixtures of fluids was investigated. The sensors were manufactured with various layouts of metal foil encapsulated by Kapton. Due to the difference in thermal conductivity between two fluids in a mixture, the thermal conductivity of the mixture is dependent on the ratio of the fluids. This method could be used in the future in Direct Methanol Fuel Cells (...
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 ...
This thesis looked at the relationship between thermal conductivity and compression and saturation in three different fuel cell diffusion media (DM). The stress-strain relationship of the materials was investigated using an optical microscope, and thermal conductivity was measured by a thermal constants analyzer. A theoretical model of the maximum through-plane thermal conductivity was developed as a function of compression and saturation....
Three different carbons (carbon black, synthetic graphite particles and carbon fiber) were added to Vectra A950RX Liquid Crystal Polymer in order to synthesize different composites for use in fuel cells. The carbon fillers were used individually and also in combination with other carbon fillers. A TPS was used to measure the thermal conductivities of the synthesized composites. It was found that the use of synthetic graphite particles as the ...
