Preparation and Characterization of Nanofluids Containing Carbon Nanotubes Modified Using Inorganic Acids, Sodium Dodecyl Sulfate and Magnetic Nanoparticles Fe2O3 and Comparison of Their Thermal Conductivity Coefficient

. Aghabozorg, M.H; Rashidi, A.M.

Preparation and Characterization of Nanofluids Containing Carbon Nanotubes Modified Using Inorganic Acids, Sodium Dodecyl Sulfate and Magnetic Nanoparticles Fe2O3 and Comparison of Their Thermal Conductivity Coefficient

Authors

M.H . Aghabozorg ¹

A.M. Rashidi ²

¹ Department of Mechatronics Engineering, Research and Science Azad University, Kermanshah, Iran

² Nanotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran

Abstract

In this study for comparing the thermal conductivity of magnetic nanofluids with other nanofluids ,three sample nanofluids prepared. Functionalized nanofluids, nanofluids with surface active substance and magnetic nanofluids using hybrid carbon nanotube-iron oxide for weight percentages under 1% in distilled water as a base fluid. First functionalized nanofluids, multi-walled carbon nanotubes functionalized with carboxyl functional group was pickling, then preparing nanofluids with Sodium dodecyl sulfate (SDS) surfactant then magnetic nanoparticles was synthesized with hybrid Fe2O3-CNT for the first time .The thermal conductivity coefficient were measured by KD2pro device. The results showed that with enhancement of temperature and weight percentage the thermal conductivity coefficient were increased. magnetic nanofluids showed higher thermal conductivity in comparison with functionalized and nanofluids with surfactant SDS.

Keywords

Magnetic Nanofluids

Thermal conductivity coefficient

Heat transfer

Iron oxide nanoparticles

Hybrid