The heat pipe is a heat transfer element with extremely high thermal conductivity. The IGBT heat pipe heat sink transfers heat by evaporation and condensation of the working medium in the fully enclosed vacuum tube. It has extremely high thermal conductivity, good isothermality, and hot and cold heat. The heat transfer area on both sides can be arbitrarily changed, long-distance heat transfer, temperature control and other advantages. The heat exchanger composed of the heat pipe has the advantages of high heat transfer efficiency, compact structure, and small fluid resistance. Due to its special heat transfer characteristics, it can control the wall temperature and avoid dew point corrosion.

At present, it has been widely used in metallurgy, chemical industry, oil refining, boiler, ceramics, transportation, textile, machinery and other industries. The heat recovery and comprehensive utilization of thermal energy in the process have achieved significant economic benefits. Working principle of gravity heat pipe The heat side of the heat pipe absorbs the heat of the exhaust gas and transfers the heat to the working fluid (liquid) in the pipe. After the heat is absorbed by the working fluid, it is converted into steam in the form of evaporation and boiling. The steam rises to the heat release side under the pressure difference. At the same time, it condenses into a liquid to release the latent heat of vaporization, and the heat is transferred to the cold fluid on the heat release side, and the condensed liquid is returned to the heated side by gravity. Since the inside of the heat pipe is evacuated, the working fluid is easily evaporated and boiled, and the heat pipe starts quickly. The heat pipe can be provided with fins on both sides of the cold and hot to enhance heat transfer.