Category: Transient Plane Source
Abstract: Surfactants are often used in nanofluids to help improve dispersion and prevent aggregation of the resident nanoparticles. In this study, the researchers used the transient plane source (TPS) technique to measure the thermal conductivity of a variety of nanofluids with different surfactants of varying concentrations, at different temperatures and pH values. For surfactants, thermal conductivity stabilizes after the addition of a certain concentration of that surfactant. Strongly acidic and alkaline environments negatively impact thermal conductivity. Using these results, the authors are able to determine the ideal conditions (temperature, pH, concentration of surfactant) to maximize the thermal conductivity of their prepared nanofluids.
Reference: Experimental Thermal and Fluid Science, 36 (2012) 22-29