In practice, all chemical process involves production or absorption of energy in the form of heat. Heat exchanger is commonly used in a chemical process to transfer heat fromthe hot fluid through a solid wall to a cooler fluid. There are different types of heat exchanger used in the industry but most of the industry used heat exchanger system. Heat exchangers are probably the most common types of heat exchanger applicable for wide range of operating temperature and pressure. They have larger ration of heat
transfer surface to volume than double pipe heat exchangers, and they are easy to manufacture in large variety of sizes and configuration. They can operate at high pressure, and their construction facilitates disassembly for periodic maintenance and cleaning. Heat exchanger find widespread used in refrigeration, power generation, heating and air-conditioning, chemical process, manufacturing, and medical application. A heat exchanger in an extension of the double pipe configuration. Instead of single pipe within a larger pipe, a heat exchanger consists of bundles of pipes or tubes enclosed within a cylindrical shell. In the heat exchanger one fluid flows through a tubes and a second fluid flows through within the space between the tubes and
the shell.