New Measurements of the Apparent Thermal Conductivity of Nanofluids and Investigation of Their Heat Transfer Capabilities

Category: Transient Hot Wire, Transient Plane Source

Author(s): Chrysi M. Tsolakidou, Georgia J. Tertsinidou, Marc J. Assael, Maria Pantzali

Keywords: Ethylene glycol, Finite Element Method (FEM), finite-element method, multi-walled carbon nanotubes, Nanofluids, Nanoparticles, Nanotubes, Thermal Conductivity, Thermal Conductivity Analyzer, Thermal Constants Analyzer, Transient Hot-Wire, Transient plane source (TPS) technique, Transmission Electron Miscoscopy (TEM), Water

Abstract: This article studied the thermal conductivity values and measurements for the following two systems using the transient hot wire (THW) and transient plane source (TPS) techniques: ethylene glycol with added CuO, TiO₂, or Al₂O₃ nanoparticles and water with added TiO₂ or Al₂O₃ nanoparticles or multiwall carbon nanotubes (MWCNTs). A TPS technique using a thermal conductivity analyzer was employed to conduct measurements to provide support for the results of the thermal conductivity measurements that were determined using the transient hot wire method. It was found that in all cases the agreement was within 2%. Thus, the thermal constants analyzer measurements were supportive of the transient hot wire ones, despite the difference of scales involved.

Reference: Journal of Chemical & Engineering Data (2017), 62:491-507

DOI: 10.1021/acs.jced.6b00767

Access Article