Heat pipes can be made into almost any shape by bending and/or flattening, subject to certain parameters. The typical minimum bending radius is 3 times the diameter of the pipe.
Commonly referred to as Qmax, the maximum heat pipe carrying capacity usually increases as the pipe diameter increases.
When standard solid base fin radiators do not meet thermal and/or mechanical requirements, adding heat pipes to the thermal solution can often solve the problem.
A constant heat transfer tube (CCHP or simply "Standard heat pipe") has a fixed thermal conductivity between the evaporator and the condenser and is the most popular type of two-phase device used to cool electronic devices.
Heat pipe radiator has become a widely used cooling solution in modern electronic devices due to its efficient thermal management capabilities. Its main features include the following aspects:
In recent years, with the continuous miniaturization of electronic devices and the increase in power density, heat management has become increasingly important. Among many heat dissipation solutions, aluminum shovel-tooth heatsinks are gradually gaining favor in the market due to their excellent heat dissipation performance and lightweight characteristics.
Thermal conductivity - The thermal conductivity of heat pipes actually varies between 1,500 and 60,000 W/(mK), unlike solid metals, which have a thermal conductivity of about 180 W/(mK) for aluminum and about 400 W/(mK) for copper.
A heat pipe is a passive two-phase heat transfer device designed to improve the performance of a standard heat sink through the evaporation and condensation cycle of the working fluid enclosed in a vacuum-sealed housing.
The most common manufacturing methods for radiators used in combination with heat pipes or soak plates are CNC machining, forging, die casting, zipper fins, extrusion, bonding and turning.
Although this category sounds unwieldy, it actually only includes solid metal radiator assemblies, radiators using two-phase devices, and pumped liquid radiators.
The radiator material used for electronic cooling applications is almost always aluminum or copper.
In order to choose the right heat sink for cooling electronic applications, it is useful for engineers to understand the definitions, uses and advantages of the different types of heat sinks.
