Thermal Conductivity of Water Based Nanofluids Containing Decorated Multi Walled Carbon Nanotubes with Different Amount of TiO2 Nanoparticles

In this paper, we report for the first time, thermal conductivity behavior of nanofluidscontaining decorated mwcnts with different amount of tio2 nanoparticles. tem imageconfirmed that the outer surface of mwcnts successfully decorated with tio2nanoparticles. the results of thermal conductivity behavior of nanofluids revealed thatthe thermal conductivity and enhancement ratio of thermal conductivity of mwcntstio2 at different amount of tio2 nanoparticles are higher than those of tio2 andmwcnts nanofluids. temperature and weight fraction dependence study also shows thatthe thermal conductivity of all nanofluids increases with temperature and weight fraction.however, the influence of temperature is more significant than that of weight fraction.we also found that decreasing amount oftio2 nanoparticles which introduce the outersurface of mwcnts leads to the augmentation of thermal conductivity of nanofluidscontaining mwcnts-tio2.