The field of nanofluids is relatively new, however researchers in this article aimed to research their thermal conductivity and dispersion behaviours. A nanofluid consists of free-floating, solid nanoparticles suspended in a base fluid. Specifically, Al2O3-H2O nanofluids were investigated in this study. Using a thermal constants analyzer, the thermal conductivities of various modifications of nanofluids were measured. Research concluded that pH and concentrations of SDBS dispersants have a ...
Author(s): D. Zhu, H. Li, J. Gao, N. Wang, X. Li, X. Wang
The need for higher thermal conductivity fillers, such as aluminum nitride, to deal with an increase in the heat output from future semiconductors has arisen, as most of them are now packaged in a silica epoxy polymer composite. Thermal conductivity testing was performed on the aluminum nitride composite using a thermal constants analyzer and the highest reading was 3.39 W/mK, approximately 15 times higher than pure epoxy. Based on the results, ...
Author(s): Daniel J. Shanefield, Eun-Sung Lee, Sang-Mock Lee, W. Roger Cannon
In this article, researchers studied the effect of particle shape on the thermal conductivity of copper reinforced polymer composites. Short-fiber shaped polyamide composites with filler content ranging from 0 to 30 % were measured, alongside of polyamides containing 0 to 60 % filler, shaped as spheres and plates. When the filler content is low, particles are not interacting with each other, and therefore the thermal conductivity is low. As the filler percentage increases to 10%, an immediate ...
Author(s): D. Kumlutas, H. S. Tekce, I. H. Tavman
In this article, researchers measured the thermal conductivity of molten silicon. To avoid potential sensor harm, the standard Kapton and nickel foil sensor was swapped for a molybdenum foil, an aluminum nitride plate sensor. The regular Kapton sensor was replaced because of aluminum nitrides high resistance to the corrosive properties of the silicon melt. It was concluded that the thermal conductivity of molten silicon, at natural gravitational forces, is 45.6 W/...
Author(s): H. Minagawa, H. Nagai, K. Kamada, T. Okutani, T. Tsurue, Y. Nakata
This article analyzes the basic criteria for determining experimental times to use in thermal conductivity experiments, using the thermal constants analyzer. Researchers have determined an interval to which test times correlate, for accurate thermal conductivity and diffusivity results. During this research, scientists also determined the possibility of testing both thermal conductivity and thermal diffusivity from one single measurement. Throughout this experiment, the researchers also expanded on the theory, calculations and ...
Author(s): L. Kubicar, V. Bohac
