Working principle of heat pipe Heat Sink
When the heat pipe Heat Sink is in operation, the evaporation section absorbs the heat generated by the heat source (power semiconductor device, etc.) and makes the liquid in the liquid core tube boil into steam. The steam with heat moves from the evaporation section of the heat pipe Heat Sink to its cooling section. When the steam transfers heat to the cooling section, the steam condenses into liquid. The condensed liquid then returns to the evaporation section through the capillary action of the liquid absorption core on the pipe wall, thus repeating the above-mentioned circulation process to continuously heat dissipation.
Advantages of heat pipe Heat Sink
The heat pipe in the heat pipe Heat Sink has the advantages of fast heat transfer speed. The heat pipe installed in the Heat Sink can effectively reduce the thermal resistance value and increase the heat dissipation efficiency. It has high thermal conductivity, which is hundreds of times of the thermal conductivity of pure copper. It has the reputation of "thermal superconductor". The heat pipe CPU Heat Sink with good technology and design will have the strong performance that ordinary air-cooled Heat Sink without heat pipe cannot achieve. At present, most of CPU Heat Sink use heat pipe technology. The heat transfer efficiency of heat pipe is related to diameter, structure and process. At present, 6mm heat pipe is mostly used in the better heat pipe Heat Sink , and 8mm products are also used in some cases. A research institute has given a set of reference values, the heat pipe with a diameter of 3mm can only transfer 15W heat in 2.8 standard heat transfer cycles, while the heat pipe with a diameter of 5mm can transfer 45W heat in 1.8 heat transfer cycles, which is 3 times of that of 3mm heat pipe! And the heat pipe product with a diameter of 8mm can transfer up to 80W heat in only 0.6 cycles. Such a high heat transfer, if there is no good Heat Sink design and fan with, it is easy to cause the heat can not be normal divergence.
The application of heat pipe Heat Sink in civil electronic products, computers, CPUs, video cards and other aspects is only a small sector, and its application in industrial power electronics is also wide, such as new energy, power industry, IGBT, SVG and other high-power devices can use heat pipe Heat Sink to heat.