An experimental investigation of transient pool boiling of aqueous nanofluids with graphene oxide nanosheets as characterized by the quenching method.

Abstract: Quenching experiments with copper spheres were performed to characterize the transient pool boiling of aqueous nanofluids in the presence of graphene oxide nanosheets (GONs) at various dilute concentrations (⩽0.001wt.%). The CHF enhancement was found to vary non-monotonously with increasing the concentration of GONs. This non-monotonic variation was in accordance with the surface wettability change due to the deposited GONs after quenching. In addition to the primary effect of the deposition layers, the non-negligible influence of the suspended GONs was also identified, especially at relatively higher concentrations. [Copyright &y& Elsevier]