What is the function of a finned heat sink?
Release time:
2022-05-25 12:01
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The finned heat sink draws in cool air from above through a fan, and when in use, it absorbs heat from the lower fins as the airflow passes through and then dissipates it. It is important to note that this top-down airflow direction, although different from the heat dissipation design of the main chassis, can effectively lower the overall temperature of the motherboard over a wider range. Below, we will introduce the function of the finned heat sink.
Finned radiatorThe fan draws in cold air from above, and when in use, it mainly absorbs heat from the airflow passing through the fins below before dissipating it. It is important to note that although this top-down airflow direction differs from the heat dissipation design of the main chassis, it can effectively lower the overall temperature of the motherboard over a wider range. Below, we will introduce the function of the finned radiator.
Finned radiators are currently quite common devices. There are many knowledge points involved in their use. In fact, the air convection effect produced by this type is slightly inferior to that of tower coolers, but it can simultaneously dissipate heat for nearby memory modules or dedicated graphics cards, which is a significant advantage. Moreover, finned radiators are lighter in construction, increasing the heat dissipation surface area and providing good thermal performance. For example, when used as high-hanging industrial lights, traditional die-cast aluminum and profile aluminum are heavier, which can pose certain safety risks; finned radiators are safer in this regard. Additionally, because they are assembled parallel to the motherboard, they are generally compatible with all sizes of computer cases, making them a reliable choice for medium and small cases.
Finned radiators are actually much more expensive than radiators made from other materials; however, they also have some shortcomings during use. For instance, due to differences in manufacturing processes, the production cost of finned radiators is higher, so their market price is correspondingly higher. Therefore, finned types are generally made as higher-end products. This type of radiator technology is now applied in LED lights such as corn lights, industrial lights, floodlights, and panel lights. Finned radiators are lighter in construction and increase the heat dissipation surface area while providing good thermal performance. Additionally, because they can achieve a much higher ratio of fin height to spacing compared to extruded aluminum types, choosing a joint finned radiator can yield better cooling performance.
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How much do you know about finned heat sinks?
The characteristics of finned heat sinks are that the fins break through the original proportional limitations, resulting in good heat dissipation effects, and different materials can be used to make the fins. The drawbacks are also quite obvious, as the heat sink and the base are bonded with thermal paste and solder, which can cause interface resistance issues that affect heat dissipation. To improve these shortcomings, two new technologies have been applied in the field of heat sinks.
Introduction to the characteristics of finned heat sinks.
The finned heat sink is a device used for electronic components that are prone to heating in electrical appliances. It is made of aluminum alloy, yellow or bronze, and comes in plate, sheet, or multi-sheet shapes. For example, the CPU in a computer requires a considerable size, and the power tubes, line tubes, and amplifier tubes in televisions all need to dissipate heat. Typically, a layer of thermal grease should be applied to the contact surface of the electronic components to more effectively conduct the heat generated by the components, which is then dissipated into the surrounding air.
Introduction to the advantages of finned heat sinks
The finned heat sink primarily achieves heat dissipation through conduction, involving dielectric heat sinks that are in direct contact with the processor. After absorbing heat, it dissipates through convection. During the convection process, the area is mainly determined by the surface area of the fins. Common methods used in the industry include: increasing the number of fins and increasing the length of the fins. One of the reflected data points is the 'thickness ratio', which is the ratio of fin thickness to its height.
Introduction to finned heat sinks
The finned heat sink primarily achieves heat dissipation through conduction, involving a medium heat sink that is in direct contact with the processor. After absorbing heat, the heat sink dissipates it through convection. In the convection heat dissipation process, the heat dissipation area is mainly determined by the surface area of the heat dissipation fins. The larger the surface area, the better the heat dissipation effect. The smaller the surface area, the worse the heat dissipation effect.
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