Evaluation on Enhanced Heat Transfer Using Sonochemically Synthesized Stable Zno-Eg@Dw Nanofluids in Horizontal Calibrated Circular Flow Passage

In this research, Zinc Oxide-Ethylene @ glycol distilled water based nanofluid was synthesized using the sonochemical method. The convective heat transfer properties of as were observed for a closed single circular tube pipe in turbulent flow regimes. prepared nanofluids characterized by ultra violet spectroscopy (UV–VIS), UV–VIS absorbance, X-Ray diffraction (XRD), Fourier transform infrared (FTIR), Transmission electron microscopy (TEM) and stability analysis. Five calibrated k-type thermocouples mounted on surface test section. Analytical data related to exchanger, incorporated with section collected. addition ZnO solid nanoparticles EG@DW mixture enhanced value thermal conductivity other thermophysical characteristics nanofluids. Maximum at 45 °C 0.1 wt.% nanofluid. Increasing had increased subsequently change temperature from 20 °C. Furthermore, Nusselt numbers ZnO-EG@DW-based estimated various concentration present EG@DW-based fluid. presence into base fluid escalate (Nu) number 49.5%, 40.79%, 37% 23.06% 0.1, 0.075, 0.05 0.025 concentrations, respectively, room temperature. Varying (0.1, 0.025) shown improved (h) compared alone. absolute average ZnO-EG@DW highest mixture. magnitude 600 W/m2k 1200 Similarly, improvement three (0.075, noticed 600–1160, 600–950 600–900 W/m2k, which is greater than