Heat pipe heat sink performance and advantages

The heat pipe heat sink is a highly efficient heat sink that has unique heat dissipation characteristics. That is, it has a high thermal conductivity, and the axial distribution of the temperature between the evaporation section and the cooling section is uniform and substantially equal.

The thermal resistance of the heat sink is determined by the thermal conductivity of the material and the effective area within the volume. When the volume of the solid aluminum or copper heat sink reaches 0.006m3, increasing the volume and area does not significantly reduce the thermal resistance. For discrete semiconductor devices with double-sided heat dissipation, the thermal resistance of air-cooled all-copper or all-aluminum heat sinks can only reach 0.04 °C/W. The heat pipe radiator can reach 0.01 ° C / W. Under natural convection cooling conditions, heat pipe heat sinks can be more than ten times more efficient than solid heat sinks.

Heat pipe radiators have the following advantages:

  1 The thermal response speed is fast, and its ability to transfer heat is more than 1000 times larger than the copper tube of the same size and weight;

  2 small in size and light in weight;

  3 high heat dissipation efficiency, which can simplify the heat dissipation design of electronic equipment, such as variable air cooling for self-cooling;

  4 No need for external power supply, no special maintenance is required during work;

  5 has a good isothermality, after the heat balance, the temperature gradient of the evaporation section and the cooling section is quite small, which can be approximated as 0;

  6 Operation is safe and reliable, and does not pollute the environment.