Through the unidirectional cooling effect of heat pipe, a large amount of cold energy is stored in the underground permafrost layer in winter, which prevents the permafrost from melting in summer, forming a "permafrost layer" and improving the strength of the permafrost.
The low-temperature heat pipe technology independently developed by SUNPOWER Group has solved the worldwide problem of thawing deformation of permafrost in major national projects. It has effectively prevented the thawing settlement of permafrost foundation in railway, highway, bridge, culvert, tunnel, airplane runway, oil pipeline, transmission line tower foundation and other projects. It has been widely used in infrastructure construction.
Nano-heat pipe technology independently developed by SUNPOWER Group (5.0)：
The nano-heat pipe is heated by molecular vibration and forms a dark infrared radiation area about 60 cm around diameter. It has the characteristics of fast heating and stable heating. The heating efficiency of nano-heat pipe is 2-5 times higher than that of ordinary thermal material, and energy saving is 50-80%.
Hazard of permafrost：