Diamond Nanofluids: Microstructural Analysis and Heat Transfer Study. Issue 6 (26th March 2021)

• Record Type: Journal Article
• Authors: Mashali, Farzin; Languri, Ethan M.; Davidson, Jim; Kerns, David
• Is Part Of: Heat transfer engineering. Volume 42:Issue 6(2021)
• Page Start: 479
• Page End: 491
• Publication Date: 2021-03-26
• Subjects: Heat -- Transmission -- Periodicals; 621.4022
• DOI: 10.1080/01457632.2019.1707388
• Languages: English
• ISSNs: 0145-7632

Abstract

Abstract: Nanofluids are suspensions of ultra-fine nanoparticles or tubes resulting in the nanofluids having thermal conductivities significantly higher than those of the conventional base fluid alone. The purpose of this study is to evaluate the thermo-physical properties, including thermal conductivity, viscosity, electrical conductivity and above all, convective heat transfer coefficient, of de-aggregated and fully functionalized diamond nanofluids. The microstructural characterization of nanodiamond powder has been done using X-ray diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy. Results suggest that there is an optimum point at which maximum thermal enhancement is obtained with few adverse effects from risen viscosity. The results also indicate up to a 27% enhancement in the heat transfer coefficient of the nanofluid with a particle loading of only 0.05 wt.%.