Shell & Tube Heat Exchanger is designed for higher-pressure applications and consists of a series of tubes. It is widely used in a variety of applications as a cooling solution, including cooling of hydraulic fluid and oil in engines, transmissions and hydraulic power packs. It is classified into Fixed and Floating type heat exchangers. In Fixed type, there are absolutely no chances for inter mixing of two fluids. In Floating type, there are advantages of removability of tube bundle and access for cleaning both inner and outer side of tubes and shell.