The purpose of this study was to produce high porosity silica thermal insulators through gelation-freezing. The thermal conductivities of the insulators in relation to porosity and microstructure were measured by a thermal constant analyzer based on the transient plane source (TPS) method. The thermal conductivities of the S1 and S10 samples remained fairly constant despite temperature changes, and were mainly affected by solid and gas conduction....
Seasonal thermal storage based on phase change materials (PCMs) require a thermally conductive host because they typically have low thermal conductivities. In this study, tannin-based composite carbon foams were prepared using thermally conductive exfoliated graphite (EG) fillers and pMDI additives. A thermal analyzer measured the thermal conductivity of the samples using the transient plane source (TPS) method. Results showed that the EG-carbon foams and the EG/pDMI-carbon foams showed significantly ...
Tannin and lignin are organic materials that are more cost-effective than synthetic, non-renewable phenolic compounds. In this paper, tannin-lignin-formaldehyde (TLF) composites were used to synthesize thermally insulative mesoporous aerogels. A thermal analyzer measured the thermal conductivity of two TLF samples using the transient plane source (TPS) method. Results showed that the TLF aerogels had better thermal insulation properties than any other organic aerogels reported in the literature, and were well ...
The transient plane source (TPS) method is a popular technique that is used to measure the thermal properties of solids. The TPS method is widely used because it can test a variety of materials, it is easy to set up, and measurements are non-invasive. A downside of the TPS method is that it requires two homogenous samples, unlike invasive contact-probe techniques. This study proposes the idea of a “stamp sensor”, ...
Lime-hemp concrete (LHC) is a sustainable construction material with a low environmental impact. In this study, the thermal properties of two lime-hemp mixes with varying levels of hemp were measured to analyze the material’s ability to be used on a larger scale in cold and wet climates. A TPS Thermal Constants Analyser measured the thermal properties of the lime-hemp samples using the Transient Plane Source (TPS) method. Results showed ...
