Nitrate materials play an important role in the development of latent thermal energy storage (LTES) systems. This paper examined the thermo-physical properties of sodium nitrate, potassium nitrate and their mixtures with expanded graphite (EG) additives for their applications in solar energy storage. The transient hot-wire method measured the apparent thermal conductivities of the nitrates and nitrates/EG mixtures. Results showed that nitrates/EG mixture PCMs with the highest concentrations of ...
This paper examined the thermophysical properties of hydrate using disodium hydrogenphosphate 12H2O to develop a long-term latent heat storage (LTLHS) using supercooling. The thermal conductivities of solid and liquid disodium hydrogenphosphate 12H2O were measured using the transient plane source (TPS) technique. Results showed that the thermal conductivity of liquid disodium hydrogenphosphate 12H2O increased slightly with temperature, whereas the solid phase showed a minor downward trend. Also, thermal ...
In this study, pure eicosane and eicosane-CuO solid composites were prepared using ambient and ice-water bath solidification methods. A Thermal Constants Analyzer measured the thermal conductivity of the samples using the transient plane source (TPS) technique. Results showed that for both solidification methods, composite thermal conductivity was independent of temperature up to a point, and the composites with the highest nanoparticle concentrations had the highest thermal conductivity. Although the composites ...
The structural integrity of steel members is jeopardized when fire insulation is partially lost. This paper examined the thermal and mechanical properties of fire insulation under elevated temperatures to further understand thermal gradients and develop preventative safety measures. A thermal analyzer measured the thermal conductivity of the insulation material using the transient plane source (TPS) method. Results show that thermal conductivity increases with temperature because the spray-applied fire resistance materials ...
In this paper, the physical characteristics of concretes containing three types of aggregates were examined under high temperatures. A thermal analyzer measured the thermal conductivity of the concrete samples using the transient plane source (TPS) method. Results showed that the thermal conductivity of well-crystallized concretes had a stronger inverse relationship with temperature than the poorly-crystallized samples did. As well, high-performance concretes retained their thermally conductive properties better than normal concretes....
