HeatPipe Assembly heatsink for high power LED lighting
High power LED lighting (above 300W) mainly use heat pipe heatsink for heat dissipation, but this heat dissipation technology is also facing the challenge inherited from PC processor heat dissipation. There are three heat transfer modes: conduction, convection and radiation. Any heat dissipation design is a comprehensive application of these modes.
At present, there are three common heat dissipation methods in the LED industry: natural heat dissipation, forced convection heat dissipation and heat pipe heat dissipation. The heat pipe heat dissipation is the best and stable heat dissipation device at present. Its heat conduction speed is dozens to hundreds of times higher than that of traditional metals. This feature is better for LED. It can quickly transfer the heat generated by led to other places in the fastest way, which is faster and more effective than any other method. The disadvantage is that the cost is high. If we realize the standardization of heat pipe heat dissipation After modularization, its cost will not be a problem.
From the perspective of use, the heat pipe has the advantage of extremely fast heat transfer speed. Installing it in the radiator can effectively reduce the thermal resistance and increase the heat dissipation efficiency. Heat pipe, also known as "thermal superconductor", its core function is heat conduction. It transfers heat through the vapor-liquid phase change of working medium in a fully closed vacuum tube. It has high thermal conductivity, which is hundreds of times higher than that of pure copper.
From a technical point of view, the core role of heat pipe is to improve the efficiency of heat transfer and quickly take heat away from the heat source. The working principle of heat pipe is very simple. Heat pipe is divided into evaporation heating end and condensation end. When the heating end is heated, the liquid around the pipe wall vaporizes and generates steam. At this time, this part of the pressure increases, and the steam flows to the condensing end. After reaching the condensing end, it is cooled and condensed into liquid, and heat is released at the same time. Finally, it returns to the heating end with the help of capillary force to complete a cycle.
From a technical point of view, the core role of heat pipe is to improve the efficiency of heat transfer and quickly take heat away from the heat source. The working principle of heat pipe is very simple. Heat pipe is divided into evaporation heating end and condensation end. When the heating end is heated, the liquid around the pipe wall vaporizes and generates steam. At this time, this part of the pressure increases, and the steam flows to the condensing end. After reaching the condensing end, it is cooled and condensed into liquid, and heat is released at the same time. Finally, it returns to the heating end with the help of capillary force to complete a cycle.
Benefits of LED heatpipe heatsink:
1. Small size. Meet the needs of miniaturization and integration of LED control system.
2. High TDP suppport for LED with high power.
3. Good thermal performance .The thermal resistance of the heat dissipation device is very small, which can quickly emit more heat in a limited space, so as to ensure that the device and devices can work in a low temperature environment for a long time.
4. Good cost save with long service life time.
5. No extra maintenance required.
6. Energy saving, no need extra power to run the system.
7. High reliablity.
