Heat Sink Extrusions and Extruded Aluminum Heatsinks

Heat sink extrusions can have many benefits over other types of heatsinks. Here are some possible reasons why your application may benefit from the use of heat sink extrusions. Extruded heat sinks can be more efficient than stamped heat sinks. Fully machined assemblies are typically much more expensive than extruded heatsinks, which makes the extruded variety much easier on your pocketbook. Because many extruded heat sinks are readily available typically in many standard sizes and shapes, availability is likely to be assured. If your application requires customization, most heatsink specialists can readily accommodate such requests for heat sink extrusions. When considering particular metals, extruded aluminum heatsinks can have a significant advantage in terms of heatsink weight when compared to copper. Depending on the heat sink company you choose to work with, you may find one with types of mounting systems that eliminate the need for mounting tools and hardware specifically for that task.

Extruded heatsinks can be a better option than machined assemblies or stamped heat sinks. Heat sink extrusions can provide a broader range of solutions for higher powered systems and components. Depending on your needs for your specific application, complex fin structures are possible via extruded aluminum heatsinks when using raw aluminum and an extrusion die. The more complex fin structures can allow for greater heat dissipation via greater surface area, making the general task of heat management a much easier and cheaper one. Contact a specialist today to take advantage of all this!

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Introduction to Heatpipes

Heat pipes are devices used for heat transfer that combine two principles: phase transition and thermal conductivity. These principles are combined in order to manage the transfer of heat that takes place between two solid interfaces. Where a liquid comes in contact with the hot heatpipe, this liquid turns into a vapor, which travels along the heat pipe until it reaches the cold interface where it condenses back into a liquid; this relseases the latent heat. The process repeats when the liquid then returns to the hot interface of the heatpipe again via capillary action or centrifugal force or gravity.

Heatpipes are very effective thermal conductors, though the specific thermal conductivity varies from heat pipe to heatpipe according to the length. Heat pipes typically are composed of a sealed pipe made of a material appropriate for the fluid that is being used. For example, copper is typical for water heatpipes, while aluminum is usually used for ammonia heat pipes. A vacuum pump is used to remove air from the empty heatpipe before a working fluid partially fills the heat pipe prior to sealing. Within the temperature range of the operating heat pipe, the heatpipe should contain both liquid and vapor.

Heatpipes date back to the advent of steam technology during the steam age, along with the “Perkins Tube” which was used widely in working ovens and train boilers. The term “heatpipe” wasn’t coined until 1963, when George Grover independently developed the technology at Los Alamos National Laboratory.

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