The design of the solution, in addition to a number of other criteria, is one of the primary determinants of whether or not the thermal performance of a heat sink may be improved. They are connected in some way. Let’s go through these elements, which could help you optimize the design of your heat sink and get the performance you’re looking for in the process.
When designing heat sinks, it is important to maximize the amount of surface area that is in contact with the fluid that is being cooled or with the air that is surrounding the heat sink. In principle, this doesn’t sound like a difficult undertaking, and when you have professionals working on the design, the process definitely gets easier. You will end up saving money as a result of this decision.
Why? because you have the greatest opportunity to realize considerable cost savings at the design phase of the project. When the design is finalized, you will no longer have the ability to make significant changes that will result in cost savings. If this is the case, my recommendation is that you seek out the necessary experience in many fields, such as the following:
Fabrication engineering product design and development extrusion technique aluminum design
There is sophisticated software available on the market, and you can purchase it if you want to perform computational fluid dynamics (CFD). You can use this information to create a heat sink. However, I am of the opinion that there is more work involved in achieving one’s goals.
When expertise is brought in early, many options for alloy selection, recommendations for surface treatment, and input into the overall design can be obtained.
Integration of functionality such as screw ports, cable channels, and capabilities for attaching other parts is an example of this.
These are going to be seasoned professionals who are familiar with your business and are aware that better thermal performance achieved through the use of aluminum extrusions typically results in a reduction in weight, an increase in efficiency, and a decrease in the total cost.
What exactly are heat sinks?
A passive heat sink is a mechanical component that is attached to an electrical component for the purpose of transporting heat away from the electrical component and into the environment around it. This type of heat sink is known as a “passive heat sink.” This environment is most frequently composed of air, although it occasionally takes the form of other fluids like water or coolant as well. Due to the limited thermal conductivity of air, electrical components require this additional cooling help, which can be provided by various mechanical heat sink design configurations. Heat sinks are commonly fabricated from CNC-machined aluminum extrusion or copper, and they have heat sink fins or pins that function to enhance the component’s surface area in order to promote the component’s heat transfer to the fluid that is surrounding it. The figure below shows two different types of mechanical heat sinks: a pin type heat sink (on the left) and a fin type heat sink (on the right).
Heat sinks made of aluminum can have their thermal performance improved by the following factors:
Heat sinks made of aluminum are typically either air-cooled or liquid-cooled. It makes little difference whether yours relies on air or liquid cooling; the primary aspects that determine its thermal performance are the flow of air or liquid and the design of the fins and channels. Other considerations to make during the design phase include the following:
- surface therapy
- The force of resistance to heat
- Techniques of jointing
- Materials, including the material that makes up the thermal interface
The majority of heat sinks are constructed from aluminum alloys of the 6000 series, specifically alloys with the numbers 6060, 6061, and 6063. Other common materials include copper, nickel, and titanium. The heat conductivity of these alloys has been measured to be at consistently high levels. The thermal properties of aluminum are not as favorable as the thermal qualities of copper; however, an extruded aluminum heatsink weighs about half as much as a copper conductor with the same conductivity would, and the aluminum solution is also less expensive than the copper option.