Experimental analysis of heat transfer enhancement in convergent divergent helical coiled tube heat exchanger using nanofluid

Abstract

High performance heat transfer systems are vital in numerous industrial applications and advanced electronic devices. Conventional heat transfer fluids, however, suffer from limited thermal conductivity, which constrains the efficiency of heat exchangers. Recent research has focused on innovative strategies to improve the thermal performance of these fluids such as helical coil, inserted helical coil and curved coil. Further more, to augument the heat transfer coefficient by using the convergent divergent helical coiled tube (CDHCT). One such strategy involves mixing highly thermally conductive particulate solids, such as metal oxides, into the base fluid, resulting in what are known as nanofluids deferment of nanoparticles sized between 1-100 nm. Many nanofluids demonstrate significantly higher convective heat transfer contrast to traditional fluids such as Cu, Al2O3. In this study, analyze the heat performance of a shell and CDHCT exchanger by Al2O3/water nanofluids. newline