Abstract: This research examines how coil design and other geometric aspects affect the characteristics of single phase flow and convective heat transfer. Copper tubes with internal diameters of 9.5mm, 1.5mm thickness, and 3000mm length were used in experiments on helical, conical, and spiral coil heat exchangers. According to the findings, helical coil heat exchangers had a convective heat transfer rate that was 9.54% greater than that of conical and spiral coil heat exchangers. As mass flow rate rose, Nusselt numbers climbed, demonstrating the efficiency of helical coil heat exchangers. The modeling of heat exchangers was carried out using computational fluid dynamics (CFD) software, and the CFD tool was utilized to confirm the experimental results of water outlet temperature. The results showed good agreement.

Keywords: spiral coil, flow rate, CFD, heat exchanger, geometry

| DOI: 10.17148/IARJSET.2023.10734