Heat pipe is a novel heat transfer element with high thermal conductivity. It originated from the United States in the 1960s. In 1967, a stainless steel-water heat pipe was put into the orbit of the Earth satellite for the first time and operated successfully.

As soon as the theory of heat pipe was put forward, scientists all over the country attached great importance to it, and carried out a lot of research work, which enabled the rapid development of heat pipe technology. Heat pipe technology began to be mainly used in aerospace field.

Heat pipes have been studied since the 1970s. Since the 1980s, various heat pipe products such as heat pipe gas-gas exchange pipe, heat pipe gas-water heat exchanger, heat pipe waste heat boiler, heat pipe steam generator and heat pipe hot blast furnace have been developed successively. The heat pipe has been widely used in building materials industry, metallurgy industry, chemical and petrochemical industry, power engineering, textile industry, glass industry, electronic and electrical engineering and other fields.

Heat pipe is made of steel, copper, aluminum tube filled with heat conducting medium, pumped into a certain vacuum and sealed, the working medium in the tube is made of a variety of inorganic active metal and its platform mixture, has a self-extraordinary thermal activity and thermal sensitivity.

When hot and suction, when cold and release. This thermal superconducting working medium is activated at a certain temperature and transfers heat in the form of a molecular oscillating phase transition. Its strong thermal conductivity makes its thermal conductivity about ten thousand times that of the general metal, the conduction temperature does not fail and can be transferred at a very fast speed.

Features: Wide operating range, can be in the temperature of 30 degrees Celsius to 1000 degrees Celsius conduction of heat. Easy installation: not limited by the installation position, the heat pipe can be installed in any position according to the design needs, as long as there is a temperature difference can be heat transfer.

Super thermal conductivity: fast thermal conductivity, high strength, high efficiency, superconducting heat pipe heat transfer increases with the increase of temperature difference.

Excellent isothermal property: Good isothermal property makes the heat pipe transfer large heat flux and small heat transfer resistance under small temperature difference

A wide range of applications: superconducting heat pipe shape has greater flexibility, a wider range of applications, can adapt to a variety of harsh working environment.

Due to the many uses, types and types of heat pipes, as well as the differences in the structure, material and working liquid of heat pipes, there are many classifications of heat pipes. The commonly used classification methods are as follows:

(1) Heat pipes can be divided into two types according to the working temperature of heat pipes

Low temperature heat pipe (-- 273-- --0℃)

Temperature heat pipe (0 -- 250℃)

Medium temperature hot tube [250-- --450℃]

High temperature heat pipe (450 to 1000℃), etc.