Enhancement of Heat Transfer through a Hole Type Twisted Tape Insert using 0.4% Concentration Cuo (Copper Oxide) Nano Fluid

Abstract

Heat is transferred from one fluid to another fluid in the heat exchanger influenced by the motion of molecules of fluids in the heat exchanger tube. An experimental work was conducted for determining the enhancement of heat transfer in heat exchanger using water and nanofluid flowing through circular and horizontal duct inserted with rotating twisted tape. A stainless-steel pipe with outer diameter 34mm and internal diameter of 30mm with insertion of a test section length of 800mm, a stainless-steel twisted type tape with 2.37 twist ratio with holes of 2.5mm diameter with 40mm interval distance was pushed into the circular duct. The tape which is made to rotate inside the tube. An invariable heat of the tube was produced by using heaters located on the external part of the circular duct. The significant limitation of conventional fluids is its lower conductivity in the area of development of fluids for heat transfer that are needed in many applications. In this work, the suggestion of an advanced category of fluids, which can be produced by suspending Nanoparticles in establishing fluids are used. The suspension of Nanoparticles with the base fluid the thermo-physical attributes of Nanofluids are changed when compared with those of currently used fluids and this represents the hope for improved heat carrying capacity in the heat exchanger. The properties and possible use of the Nanofluids are estimated. In this investigation, an experimental study has been carried to determine the results of 0.4% concentration CuO (Copper Oxide) Nanofluid which is synthesized with water as base fluid in the place of currently used heat transfer fluids like water, etc. where we are comparing the experimental results obtained from experiments done on water and water based CuO Nanofluid at 0.4% concentration. The experiment is conducted using rotating hole type twisted tape with the speed varying from 0 to 300 RPM and flow rate is ranging from 1 to 3 LPM.