Heat Transfer Enhancement in Helically Micro-Coiled Tubes Using Nanoparticle-Viscoelastic Fluids by Elastic Turbulence

In recent years, the application of micro-systems has received more and more attention. However, the microsystem scale is small, which greatly limits the flow Reynolds number. It’s difficult for the flow of Newtonian fluid to be turbulent flow at low Reynolds number, limiting the mixing and heat transfer in micro-systems. Nanoparticle-viscoelastic fluids (henceforth referred to as NPVE fluid) were utilized as the experimental group and water as the comparison group. Heat transfer performance of these two groups of fluids under different Reynolds numbers was tested, respectively. Heat transfer efficiency is approximately 35% stronger than water under the same conditions after using a viscoelastic suspension of nanoparticles.