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Aluminum Heat Sink & Profile Manufacturing

address:No. 51 Luming Road Heavy River Management District - Qing Town Dongguan City

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Telephone:+86 13827205356

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FIN radiator with high-power heat pipe

time:2021-05-10 17:12 author:Heat sink design click:

Basic characteristics of high-power heat pipe FIN radiator
The heat pipe fin is a heat transfer element that relies on the phase change of its internal working liquid to realize heat transfer, and has the following basic characteristics.

Thermal conductivity of heat pipe fins
The inside of the heat pipe mainly relies on the vapor and liquid phase of the working fluid to transfer heat, and the thermal resistance is very small, so it has a high thermal conductivity. Compared with metals such as silver, copper, and aluminum, a heat pipe per unit weight can transfer several orders of magnitude more heat. Of course, high thermal conductivity is also relative. The temperature difference always exists, it is impossible to violate the second law of thermodynamics, and the heat transfer capacity of the heat pipe is limited by various factors, and there are some heat transfer limits; The axial thermal conductivity of the heat pipe is very strong, and there is not much improvement in the radial direction (except for the radial heat pipe).

Isothermal properties of heat pipe fins
The steam in the inner cavity of the heat pipe is saturated. The pressure of saturated steam depends on the saturation temperature. The pressure drop of saturated steam flowing from the evaporation section to the condensation section is very small. According to the equations in thermodynamics, the temperature drop is also very small, so the heat pipe has excellent isothermal properties.

Variability of heat pipe radiator
The heat pipe can independently change the heating area of the evaporation section or the cooling section. That is, a smaller heating area is used to input heat, and a larger cooling area is used to output heat. Or the heat pipe can input heat with a larger heat transfer area and output heat with a smaller cooling area. In this way, the heat flux density can be changed, and some heat transfer problems that are difficult to solve by other methods can be solved.


Tower type high-power heat sink     High-power heat pipe heat sink