Performance Analysis of Triple Concentric Tube Heat exchanger with Ribs-A Review

Abstract

Heat exchanger is a device which is used to transfer heat between a solid object and a fluid, or between two or more fluids separated by a wall to prevent mixing of the fluid. The performance of the heat exchanger generally depends on the various physical characteristics of the fluid and the material. In order to achieve the maximum efficiency of heat exchanger, many researchers have put their effort to maximize the performance along with reduced cost and size. There are several kinds of heat exchangers are used in industry such as plate type heat exchanger, shell and tube heat exchanger, double pipe heat exchanger, helical tube heat exchange. Double tube heat exchanger is conventionally used because of its cheaper cost and simple construction. it occupies more space. To resolve this problem a new heat exchanger was introduced i.e. triple tube heat exchanger. It provides additional flow passage with compact design and greater heat transfer area per unit length of heat exchanger as compared to the double pipe heat exchanger. To study the temperature distribution along the length of heat exchanger two combinations of the heat exchanger are used for this purpose, the first one named which means that the normal water flows through the innermost pipe, hot water flows through the inner annulus and the cold water flows through the outer annulus. The second combination used is named as where the cold water and normal water interchange between each other while hot water flow remains same as in configuration.