Heat pipe radiators are new products that use heat pipe […]
Heat pipe radiators are new products that use heat pipe technology to make significant improvements to many older radiators or heat exchange products and systems. Heat pipe radiators have two categories: natural cooling and forced air cooling. The thermal resistance of the air-cooled heat pipe radiator can be made smaller and is often used in high-power power supplies.
Principle of heat dissipation
The heat pipe radiator consists of a sealed tube, a wick, and a steam passage. The wick surrounds the wall of the sealed tube and is saturated with a volatilizable saturated liquid. This liquid may be distilled water or ammonia, methanol or acetone. Heat pipe radiators filled with liquids such as ammonia, methanol, acetone, etc. still have good heat dissipation at low temperatures.
When the heat pipe radiator is in operation, the evaporation section absorbs the heat generated by the heat source (power semiconductor device, etc.), and the liquid in the wicking tube is boiled into steam. The steam with heat moves from the evaporation section of the heat pipe radiator to its cooling section, and when the steam transfers heat to the cooling section, the steam condenses into a liquid. The condensed liquid is returned to the evaporation section through the capillary action of the wick on the wall of the tube, thus repeating the above-described cyclic process to continuously dissipate heat.