An experimental study on thermal conductivity of MgO nanoparticles suspended in a binary mixture of water and ethylene glycol

摘要

In the present study, the effects of solid volume fraction and temperature on the thermal conductivity of MgO/ water-EG (60:40) nanofluid are discussed. Samples of nanofluid are provided by two step method at different solid concentrations, including 0.1 %, 02%, 05%, 0.75%, 1%, 1.5%, 2% and 3%. The experiments are performed for different temperatures ranging from 20 to 50 ℃, using KD2 pro thermal analyzer which employed transient hot wire to measure thermal conductivity. The finding shows that thermal conductivity of nanofluid increases with increasing solid volume fraction or temperature. Based on the experimental data, new correlation for modeling the thermal conductivity of MgO/water-EG (60:40) for different solid volume fractions and temperatures was proposed.