Vacuum insulation panels (VIPs) are highly insulative materials that have industrial applications. This study aimed to replace glass fibers (GF) and fumed silica (FS) in VIPs with diatomaceous earth (DE) and glass bubbles (GB) to reduce the production cost and lengthen the service life of VIPs. Three experiments were carried out using a thermal constants analyzer based on the transient plane source (TPS) method to determine the effectiveness of DE ...
Thermocells are heat waste harvesting devices that operate at room temperature. The addition of multi-walled carbon nanotubes (MWCNTs) to ionic liquids (ILs) in thermocells enhances electrical conductivity, and the devices can operate at higher temperatures. In this study, various properties of ILs containing MWCNTs were examined, and a TPS system measured the thermal conductivities of the samples using the transient plane source (TPS) method. Results showed that the thermal conductivity ...
The application of carbon nanotubes (CNT) to thermal management devices has recently drawn much attention. This study produced and examined metal-carbon nanotube composites for use in highly conductive yet stable thermal management materials. The structural and thermophysical properties of metal-CNT composites were examined, including the measurement of thermal conductivity using the Thermal Constants Analyzer TPS transient plane source (TPS) method. Results showed that generally, inverse relationships were observed between thermal ...
Nanofluids are heat transfer fluids with enhanced thermal conductivity properties due to the addition of metallic-based nanoparticles. In this study, the thermal properties of Al¬2O3 and TiO2 nanofluids were examined to evaluate their usefulness in microchannel heat sink applications. A thermal constants analyzer measured the thermal conductivity of the nanofluids using the transient plane source (TPS) method. Results showed that thermal conductivity increased with volume fraction of nanofluids, and ...
Metal foams are materials composed of a solid grid with air-filled pores, and have applications in combustion chambers of gas turbines. In this study, the thermal properties of porous metal foams were tested to determine their usefulness in heating and cooling systems. The Transient Plane Source (TPS) method was used to measure the thermal conductivity of porous metallic foams. Because the porous foams were not as compacted as the dense ...
