Abstract
This study investigates graphene oxide (GO) nanosheets with excellent thermal conductivity and water dispersibility as additives to achieve a trade-off between heat-transfer performance and drag reduction. We experimentally examine the pressure loss characteristics of GO nanosheet suspensions in ethylene glycol aqueous solution flowing through a recirculating pipeline system. The GO nanosheets have a size of 0.8 nm × 3 μm × 3 μm, and the test suspension concentration is 0.1%. When the base fluid is ethylene glycol, the results show that the suspension containing 0.1% graphene oxide nanosheet delays the transition to turbulence, and drag reduction occurs in this Reynolds number range.
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