Experimental study on heat transfer enhancement ability of water-based graphene oxide nanofluid Online publication date: Wed, 28-Nov-2018
by Hao Su; Xin-Yi Yu; Minzhong Gao; Yi-Ran Mo; Yi Zhang; Fei Xing; Aicheng Li
International Journal of Theoretical and Applied Multiscale Mechanics (IJTAMM), Vol. 3, No. 2, 2018
Abstract: Thermal properties of water-based nanofluid with different mass fraction of the graphene oxide nanosheets, and convective heat transfer capability in the microchannel heat exchangers at different temperature conditions are studied experimentally. Experimental results show that the nanofluid can be stable under 60°C, but it would precipitate after four hours heating at 99°C. The kinematic viscosity decreases with extent of 50%~60% as the temperature of nanofluid increases from 10°C to 45°C and the thermal conductivity arises by 17.54%. The heat transfer experiments show that convective heat transfer capacity of water-based graphene oxide nanofluid is better than water when the wall temperature is below 100°C. When the wall temperature of microchannel heat exchangers is above 100°C, the graphene oxide nanosheets would precipitate which leads to the deterioration of convective heat transfer capacity.
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