The effects of silver nanowire size on the thermal conductivities of ethylene glycol-based nanofluids were investigated experimentally. The effects of altering the loading concentration of nanowires, and altering the temperature were also investigated. In addition to this, an investigation into the effects of the nanowire dimensions on the rheological properties of the nanofluids was also conducted. Theoretical models were then developed based on the experimental results....
The effective thermal conductivity and thermal diffusivity was measured for chalcogenide glass samples of the formulation Ge30-xSe70Sbx (x = 10, 15, 20, 25). It was found that both the effective thermal conductivity and thermal diffusivity were independent of temperature up to 160º C. After this point, both properties were found to increase with increasing temperature until they reached a maximum value at a point near the glass transition temperature of the glass. After reaching ...
Pristine and modified exfoliated graphite nanoplatelets (xGnPs and M-xGnPs, respectively) were dispersed into a paraffin wax phase change material (PCM) in an effort to raise the thermal conductivity of the PCM. The addition of pure xGnPs would decrease the electrical resistivity of the composite PCM, and thus its potential for use in electrical devices would be limited due to safety concerns. To eliminate this issue, the M-xGnPs were prepared. Samples ...
The influence of In content in the Se98-xAg2Inx (x = 0, 2, 4, 6) system of chalcogenide glasses on the physical properties of the glasses were investigated by the authors. The maximum thermal conductivity and thermal diffusivity value was observed for the sample containing 2 at. % In. The microhardness was found to initially decrease upon doping of In for Se; however, it began to slowly increase after a certain In content had been attained. ...
The thermal conductivity and thermal boundary resistance between ultrananocrystalline diamond (UNCD) and microcrystalline diamond (MCD) films on silicon wafers were evaluated. It was found that the MCD/Si composite wafers were more thermally conductive than the UNCD/Si wafers over the temperature range tested. It was also found that in both types of composite wafer, the thermal conductivity increased with temperature in contrast to the decrease that is observed in ...
