Numerical ANALYSIS OF THE Double Tube Heat Exchanger with Leaf Shape of Fins

Abstract

A heat exchanger is a device used to transfer heat between a solid object and a fluid, or between two or more fluids. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact heat exchanger is a device used to transfer heat between a solid object and a fluid, or between two or more fluids. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact heat exchanger is a device used to transfer heat between a solid object and a fluid, or between two or more fluids. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact There number of method to increase the heat transfer in the heat exchanger .to increase surface area of the heat exchanger is one of them Enhanced surfaces, such as fins, can add a significant amount of surface area in the same package space. Heat exchangers are typically held to tightly constrained package envelopes, so adding enhanced surfaces is a common practice to improve performance. In this work performance of the heat exchanger with fins judged of the basis of the LMTD and over heat transfer coefficient using CFD technique .As expected manually it is very difficult that’s why ANSYS Fluent 16.0 used to analyse. At end of the work it is found heat transfer of the heat exchanger is increased after applying the fins.