Title: Experimental study on heat transfer enhancement ability of water-based graphene oxide nanofluid

Authors: Hao Su; Xin-Yi Yu; Minzhong Gao; Yi-Ran Mo; Yi Zhang; Fei Xing; Aicheng Li

Addresses: Department of Propulsion Engineering, Xiamen University, Xiamen, 361005, China ' Department of Propulsion Engineering, Xiamen University, Xiamen, 361005, China ' School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China ' Department of Propulsion Engineering, Xiamen University, Xiamen, 361005, China ' Department of Propulsion Engineering, Xiamen University, Xiamen, 361005, China ' Department of Propulsion Engineering, Xiamen University, Xiamen, 361005, China ' Aviation Key Laborary of Science and Technology on Aero Electromechanical System Integration, Nanjing Research Center for Electromechanical and Hydraulic Engineering, Nanjing, 211106, China

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.

Keywords: graphene oxide; nanofluid; thermal properties; heat transfer enhancement; thermal conductivity.

DOI: 10.1504/IJTAMM.2018.096436

International Journal of Theoretical and Applied Multiscale Mechanics, 2018 Vol.3 No.2, pp.161 - 175

Available online: 22 Nov 2018 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article