Heat exchangers facilitate heat transfer from one media to another. The common media is fluid which is segregated by a solid wall that prevent fluids coming in direct connection with each other. Heat Exchangers are widely used in industries such as air conditioning, natural-gas processing, power stations, petrochemical plants, and more. Heat Exchanging Equipment is basically classified according to their flow arrangement. There are 3 different types of flow arrangement available-Parallel Flow, Counter Flow, and Cross Flow. Among these, shell and tube heat exchangers are widely used in diverse industrial segment. Most of the heat exchangers contains double pipe, making them suitable for small scale industries.