The working principle of a tube cooler is to exchange heat inside and outside the tube through two media with different temperatures. The hot medium usually travels the shell side to transfer heat to the surface of the heat transfer tubes, while the cold medium travels the tube side to carry the heat away. Shell and tube coolers usually use water as the cold medium, so they are often called water coolers. During work, the heat medium transfers heat to the surface of the heat transfer tube through the shell side, and the cooling water flows in the tube, absorbs the waste heat released by the heat medium and is discharged from the water outlet, thereby keeping the working medium at the rated working temperature.