A group of researches at Tarbiat Modarres University in Tehran and Research Institute of Petroleum Industry (RIPI) presented optimized conditions in order to synthesize water nanofluid /carbon nanotube.
Solid-liquid suspensions, with particles in micrometer scale, corrode the equipment, clog the pipes, and increase the pressure drop during the heat transfer procedure. However, using nanofluids do not cause the said problems.
Majid Emami Meibodi and his colleagues have carried out researches on the optimized condition to produce and to use water nanofluid / carbon nanotube.
"The stability of nanofluids and their thermal conductivity are two important factors in the quality of nanofluids. Compared to the previous researches, the effect of more parameters on the stability and thermal conductivity of water nanofluid / carbon nanotube have been studied simultaneously in this research. The tests had been designed according to a standard method. Finally, the optimized condition of production and application of nanofluids was suggested," Emami said in an interview with the news service of Iran Nanotechnology Initiative Council.
The nanofluids used in this research were synthesized through a two-stage method. First, the nanoparticles were synthesized, and then they were dispersed within the base fluid.
This research has been published in details in International Communications in Heat and Mass Transfer, vol. 37, pp. 555-559, 2010.
"In order to study the behavior of heat transfer in fluids, it is necessary to measure some properties such as thermal conductivity, viscosity, density, and thermal capacity of the fluid, in addition to synthesise various nanofluids," Emami concluded, adding, "Moreover, it is necessary to determine different heat transfer factors including convectional heat transfer factor in constant temperature of the tube or the constant thermal flux. Our group took all the said steps, and the results have been published in various papers."
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