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The Effect of Base Fluid Type in Nanofluids for Heat Transfer Enhancement in Microtubes

In this paper, single phase model was used to investigate the effect of base fluid in enhancing the heat transfer for forced convection flow of SiO2 in microtube. Four different types of base fluid such as water, ethylene glycol, engine oil and glycerin were used in this investigation. Reynolds number used was ranged from 10 to 120. The results are presented in terms of axial and wall temperature along the tube radius and tube axis, axial velocity and Nusselt number. The result shows that the glycerin has the highest Nusselt number followed by engine oil, ethylene glycol then water.