The Heat Dissipation Principle Of Heat Pipe Heat Sink?

The heat pipe heat sink is a new type of heat sink developed by using the energy of heat pipe technology  to make major improvements to many old heat sinks or heat exchange systems. There are two main types of heat pipe radiators: natural cooling and forced air cooling. Air-cooled heat pipe heat sinks can be made smaller in thermal resistance, and are often used in high-power power supplies.

The copper heat pipe heat sink includes a sealed pipe, a wick and a stream channel. The suction core surrounds the tube wall of the sealed tube and is immersed in a volatile saturated liquid. These liquids can be distilled water, or ammonia, methanol, or acetone, etc. The heat pipe heat sink filled with liquid ammonia, methanol, acetone and other liquids still has good heat dissipation performance at low temperatures.

When the heat pipe heat sink is running, its evaporation part absorbs heat from the heat source (power semiconductor devices, etc.), and the liquid in the liquid core tube is boiled and converted into steam. The heated steam moves from the evaporation part of the heat pipe heat sink to the cooling part. When the steam transfers heat to the cooling part, the steam condenses into a liquid. The condensed liquid returns to the evaporation section through the capillary action of the wick on the tube wall, thus repeating the above-mentioned circulation process to continue heat dissipation.