Heat Transfer Analysis of a Coil

Abstract

A helically coil-tube heat exchanger is generally applied in industry applications due to its compact structure, largerheattransfer area and higher heat transfer capability. Several studies from literature have also indicated that heat transfer rateinhelicallycoiled tube are superior to straight tube due to complex flow pattern exist inside helical pipe. The concept behind compact heat exchangeris to decrease size and increase heat load which is the typical feature of modern helical tube heat exchanger. While theheat transfercharacteristics of helical coil heat exchangers are available in the literature, In this project the comparison between the two types of Cone shaped helical coiled Heat exchangers with and without Annularfinsisdone with three different initial velocities (8 m/s, 10 m/s and 12 m/s). For this purpose, the CAD and CFD tools are used. CatiaV5R19isused to develop the CAD model of both Cone shaped Helical coil heat exchanger with and without annular fins. This modelsarefurtherexported to the neutral file format (.igs) to perform CFD analysis. Different Boundary conditions are applied like initial flowvelocity,Fluid as a air with its properties, atmospheric and fluid temperature etc. Base on the results generated through the CFDanalysis,conclusion is drawn.