Heat exchangers are devices that enable heat exchange between fluids of different temperature. The hot fluid transfers energy by convection to the wall or surface of the tube. The heat is then conducted through the tube wall or plate where it is finally taken in by the cold fluid. Due to their versatile use, heat exchangers play a very important role in industry. They are used for heating and cooling interiors, in air conditioners, power plants, chemical factories, in the petrochemical and oil industries. In order to better adapt them to the role they are to play, various exchangers are available on the market.