For commercial purposes, some manufacturers (there are many well-known manufacturers) take advantage of the characteristics of the public (who do not have the ability to identify) to produce some eye-catching products (such as barbecue grills, etc.), create buying points, and Spend huge amounts of money on publicity (advertising, expert reviews, etc.) to mislead the public in order to make huge profits.
When the heat pipe is used on the ground, gravity can help the condensate return. At this time, there is no need for a wick in the pipe. Just place the heat pipe at an angle or vertically, so that the heating section is below , the cooling section is at the top. Such heat pipes are called gravity-assisted heat pipes or gravity heat pipes. Most of the heat pipe heat exchangers we use use gravity heat pipes.
Capillary heat pipes also have: Capillary limitations - the flow rate of the fluid is greater than the capillary transport capacity (wacko:). This phenomenon tends to dry out the capillaries. Therefore, the installation direction of the heat pipe should be considered. It is best to have the heat dissipation end slightly higher, followed by horizontal, and wrongly, the heat dissipation end is low.
Therefore, when purchasing a heat pipe radiator, you should consider your own chassis, motherboard, etc. to choose the appropriate product.