An experimental study of water-ethylene glygcol heat transfer improvement using MWCNT nanoparticles in a car radiator

the Current paper aims to examine experimentally the effect of the presence of multi-walled nanotubes(MWCNT) in water-Ethylene Glycol (EG) with a mixture of 70/30 as base fluid on the heat transfer of fluid insideradiator. The experiments were done at fluid temperature of 800C, and various parameters, like volumetric flow raterange from 2 to 8 Lit/min and mass concentrations of 0.01, 0.05 and 0.2 % wt of MWCNT. According to the results,it was observed that by adding MWCNT to the base fluid, heat transfer coefficient and Nusselt number are bothenhanced. Also, the higher the amount of MWCNT concentration and volumetric flow rate the higher the amount ofheat transfer coefficient and Nusselt number. In addition, it is concluded that, at the best state, by adding MWCNTto the base fluid, the Nusselt number is increased about 22%.

Keywords:

Car radiator , MWCNT , heat transfer