Abstract

In recent years, more and more researches and reports on nanofluids have been made, and hybrid nanofluids as new fluids have gradually entered the field of vision. Hybrid nanofluids have many excellent properties at the same time. Because the stability of hybrid nanofluids has an important influence on the thermal properties and flow heat transfer properties of the solution, the stability of nanoparticles suspended in the base liquid has become an important direction of research. The stability of graphene oxide-Al2O3 hybrid nanofluids was studied with ultrasonic time, dispersant and ultrasonic power as variables. The experimental results show that when the ratio of graphene oxide: Nano-Al2O3: dispersant is 1:1:1, ultrasonic time is 2 h and ultrasonic power is 300 w, the stability of graphene oxide- Al2O3 hybrid nanofluid solution is the best.

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