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Author(s): , , , , , , ,

Keywords: , , , ,

Abstract: Silver (Ag) has the highest thermal conductivity of all metals, making it an attractive nanoparticle for use in heat transfer systems. The shape of nanoparticles influences their thermal conductivity, so three varieties of Ag nanoparticles were tested in this study. The Hot Disk Thermal Constants Analyser TPS 2500S measured the thermal conductivity of Ag nanospheres (NSs), nanowires (NWs), and nanoflakes (NFs) between 10-30 °C using the transient plane source (TPS) method. Results showed that the thermal conductivity of the nanoparticles generally increased with temperature. The rod-shaped Ag NWs reached higher thermal conductivities than the spherical Ag NSs and the irregularly shaped Ag NFs, and therefore would be the most effective Ag nanoparticles for use in nanofluids.

Reference: Proceedings of the ASME 2013 Heat Transfer Summer Conference, 1 (2013) 1-6

DOI: 10.1115/HT2013-17175