This paper examined the synthesis of hyperbranched polymers (HBPs) and how their hydroxyl end groups help form networks in tannin-based foams. A thermal analyzer (TPS) measured the thermal conductivity of the foam samples using the transient plane source (TPS) method. Results showed that modified foams retained their thermal insulation properties even with the addition of oligomeric precursors. This gives good indication that the addition of hydroxyl-terminated oligomeric precursors to tannin ...
Phase change materials have supercooling characteristics that would benefit long-term latent heat thermal energy storage. This paper studied the physical and chemical properties associated with the growth rate of crystallization in disodium hydrogenphosphate dodecahydrate (DHD) as a function of a degree of supercooling. The transient plane source (TPS) technique was used to measure the thermal conductivity of the DHD samples. Results of the thermal conductivity test showed that the solid ...
This study developed a model that used a transient plane source (TPS) sensor to measure the specific heat capacity of anisotropic materials. The underside of a sample holder with a diameter of 20 mm, and a height of 5 mm was attached to a Kapton TPS sensor. During measurements, the sample holder was hung inside a steel tube at atmospheric pressure. Results showed that the model underestimated the heat capacity, which suggests ...
Aspects of hydrogen distribution systems need improvement for their applications in fuel cell vehicles. In this paper, chemical and physical characteristics of the H2 storage material, sodium aluminum hydride (SAH), were examined after the samples were compacted and Expanded Natural Graphite (ENG) worms were added. A Thermal Constants Analyzer (TPS) measured the thermal conductivity of the SAH pellets with (ENG) worms using the Transient Plane Source (TPS) method. Results showed ...
Gas hydrates have potential to be used as future energy sources, so it is important to understand their thermal properties. This paper aims to examine the effective thermal conductivity of synthetic porous methane hydrate samples. A Thermal Constants Analyser measured the thermal conductivity of the methane hydrate samples using the single-sided transient plane source (TPS) method. Results showed an inverse relationship between porosity and thermal conductivity. Unfortunately, mechanical pressure can ...
