What is the working principle of heat pipe radiator?

Heat pipe radiator is generally hollow, the heat pipe has a very low boiling point of the material, in the fully enclosed vacuum tube of the vapor and liquid phase change to transfer heat, has a very high thermal conductivity, up to nearly 100 times the thermal conductivity of pure copper, because of the high thermal conductivity is regarded as a high. It is regarded as the representative of high end heat sink because of its high thermal conductivity. Wenxuan Thermal Energy's heat pipe radiator has three kinds of production process, including groove tube, metal mesh inner wall and sintered tube, and the material is generally copper or brass, according to the different design requirements to determine the heat pipe process or material.