Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-03-01

Journal: JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS

Included Journals: EI、SCIE

Volume: 42

Issue: 2

Page Number: 252-257

ISSN: 1876-1070

Key Words: Thermal conductivity; Surface tension; Viscosity; Ammonia-water; Carbon nanotubes

Abstract: The objective of this paper is to examine the effect of nanoparticles on the physical properties of a binary nanofluid by experiment. A carbon nanotubes-ammonia nanofluid (the binary nanofluid) was prepared without any surfactants. And the thermal conductivity, surface tension and kinetic viscosity of the binary nanofluid were measured experimentally. The effects of the mass fraction of carbon nanotubes, the concentration of ammonia and temperature on the physical properties of the binary nanofluid were systematically studied. The results showed that the CNTs-ammonia binary nanofluid had remarkably higher effective thermal conductivities than the base fluid, but hardly higher surface tension and kinetic viscosity. Finally, the correlation of the effective thermal conductivity of the binary nanofluid was made using the models in the literatures. (C) 2010 Published by Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers.