Funct. Mater. 2022; 29 (3): 451-455.
Investigation of the effect of graphene nanofluid on heat transfer and cooling capacity of refrigerants
Luzhou Vocational & Technical College, Luzhou, 646000 Sichuan, China
The heat transfer of a graphene nanofluid has been studied. Graphene nanofluid samples of various concentrations were prepared as coolants, and the efficiency of their heat transfer (cooling) was calculated and measured. It was found that the cooling stability gradually decreases as the concentration of the additive increases; at a fixed inlet temperature, the heat transfer coefficient increased as the additive concentration and flow rate increased. On the example of a sample of 0.4 wt.%, it is shown that the heat transfer coefficient reaches 15537 W/(m2·K) at a flow rate of 1.0 m/s. It is shown that at a fixed flow rate, with an increase in the concentration of the additive and the temperature at the inlet, the heat transfer coefficient increases significantly. Experimental results confirm that graphene nanofluids can optimize heat transfer and cooling performance. Graphene nanofluids can be used in car radiators.
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