I want to know the working principle of radiator heat pipe.

Heat pipe heat dissipation principle The principle of heat pipe technology is relatively simple, mainly using evaporation and condensation of working fluid to transfer heat (the working fluid of heat pipe covers liquid metals such as helium and nitrogen used at low temperature and sodium and potassium used at high temperature; The common working fluids of heat pipes are ammonia, water, propanol and methanol. A heat pipe generally consists of a shell, a wick and an end cover. The tube is pumped to a higher degree of vacuum, and then filled with an appropriate amount of working fluid, so that the capillary porous material of the wick near the inner wall of the tube is filled with liquid, and then sealed. The heat pipe has two ends, namely the evaporation end (heating end) and the condensation end (cooling end), and heat insulation measures are taken between the two ends as required. When one end of the heat pipe is heated (that is, when there is a temperature difference between the two ends), the liquid in the capillary core evaporates, and the steam flows to the other end under the pressure difference to release heat and condense into liquid, and the liquid flows back to the evaporation end along the porous material under the capillary action. In this way, heat can be quickly transferred along the heat pipe. Because the working fluid in the tube is saturated in the process of evaporation-condensation heat transfer, the heat pipe transfers heat at almost isothermal temperature. This is written on the Pacific computer network. I don't like copying other people's books, so I copied them this time and said the source. Belong to reprint. If you want to know more, you can go to the Pacific computer network:/power/reviews/0803/1244955 _1.html to see the introduction.