Phase change materials (PCMs) are becoming increasingly important in the field of thermal energy storage. Ionic liquids (ILs) are a group of novelty salts that are liquid below temperatures of 100 °C. To learn more about ILs based on ZnCl2/ChCl and their uses as PCMs, a Thermal Constants Analyzer measured the thermal conductivities of ionic liquids at 25 °C using the transient plane source (TPS) technique. Results indicated that thermal conductivity ...
In this thesis study, the sensor was used to characterize polymer encapsulated paraffin waxes as phase change materials (PCM). The main purpose of this study was to determine the effect of the polystyrene (PS) and PS: wax microcapsules on the morphology and thermal, mechanical and conductivity properties of the polypropylene matrix. Post-melting, the PP microcapsules were extremely well dispersed within the matrix and there was a strong interaction between them ...
The purpose of this study was to improve the wettability of silicon carbide (SiC) nanowires, in order for them to be used as thermoconductive fluids. Multiple experiments were conducted by exposing the SiC nanowires to hydrofluoric acid, tetraethyl orthosillicate, polyvinylpyrolidone and sodium hydroxide. Various tests, including x-ray diffraction, Fourier transformation-infrared, x-ray photoelectron spectroscopy, thermogravimetric analysis, scanning electron microscopy and transmission electron microscopy, were performed on these various materials to identify ...
This study suggested the use of capric acid–palmitic acid–stearic acid ternary eutectic mixture/expanded graphite (CA–PA–SA/EG) composite phase change material (PCM), as a low-temperature heat storage material. With a mass ratio of CA:PA:SA = 79.3 : 14.7 : 6.0, the mixture was prepared and its mass ratio compared to that of the CA-PA-SA/EG composite could reach as high as 90%. The melting temperature of the CA-PA-SA/EG composite was ...
This study highlights the ongoing search for sustainable and thermally suitable phase-change materials (PCMs), for hot weather building climates, such as Iraq. This new PCM must have an extraordinary heat and cold retention ability. Building industries are interested in using paraffin’s in their roofing materials, because of their thermo-physical properties, their profitability to save on electricity and HVAC (heating-ventilating air conditioning) systems, their local abundance, as well as their ...