Thermal Conductivity Enhancement of Transformer Oil using nano-SiO2 from rice husk ash

Nanofluid is a novel heat-transfer fluid prepared by dispersing nanometer-sized solid particles in traditional heat-transfer fluidto increase heat-transfer performance. Thermal conductivity and viscosity are the important thermophysical properties of any nanofluid which affect its heat transfer performance. In this study, transformer oil-based nanofluid was prepared by dispersing nano-SiO2 nanoparticles in transformer oil. Experiments have been conducted at different temperature (and with varying volume concentrations (0.1%, %0.2, 0.3% , 0.4% and 0.5%) of nanoparticles in the transformer oil. The results show a 16% enhancement of the thermal conductivity of SiO2 nanofluid with 0.5% Vol fraction

کلیدواژه ها:

Thermal conductivity ، Nanofluid ، SiO2 ، rice ash ، transformer oil