Heat Pipe Heat Sink Performance
Heat pipe heat sink is composed of sealing tube, suction core and steam channel. The suction core is surrounded on the wall of the sealed tube and impregnated with saturated volatile liquid. The liquid can be distilled water, ammonia, methanol or acetone. The heat pipe heat sink filled with liquid such as ammonia, methanol and acetone still has good heat dissipation ability at low temperature.
When the heat pipe heat sink is running, its evaporation section absorbs the heat generated by the heat source ( power semiconductor device, etc.), making the liquid in its wick boil to steam. The heated steam moves from the evaporating section of the heat pipe heat sink to its cooling section, where it condenses into a liquid. The condensed liquid is then returned to the evaporation section through the capillary action of the suction core on the wall, so as to repeat the above cycle process of continuous heat dissipation.
Heat pipes have an extremely effective high thermal conductivity. While solid conductors such as aluminum, copper, graphite and diamond have thermal conductivities ranging from 250 W/m•K to 1,500 W/m•K, heat pipes have effective thermal conductivities that range from 5,000 W/m•K to 200,000 W/m•K. Heat pipes transfer heat from the heat source (evaporator) to the heat sink (condenser) over relatively long distances through the latent heat of vaporization of a working fluid. Heat pipes typically have 3 sections: an evaporator section (heat input/source), adiabatic (or transport) section and a condenser section (heat output/sink).
Heat pipe heat sink advantages :
· Fast thermal response speed
· Light weight
· High heat dissipation efficiency
· No need external power supply
· Good isothermal
· Safe and reliable operation
PowerWinx is heat pipe heat sink manufacturers with advanced heat pipe technology, looking for heat pipe heat sink or advance thermal solutions, please contact us.