Several issues that must be understood when operating a finned heat sink.
Release time:
2022-06-07 12:30
Source:
Previously, we introduced and explained the principles of finned heat exchangers. In this issue, we will briefly describe the precautions to be taken during the use of finned heat exchangers. As a professional company, we are very familiar with our products.
Previously, we introduced and explained the principles offin heat exchangers. In this issue, we will briefly describe the precautions to take during the use of fin heat exchangers. As a professional company, we are very familiar with our products.
Fin heat exchangers primarily use metals with good thermal conductivity, lightweight, and easy to process (mostly aluminum or copper; silver is too expensive and generally not used) attached to the heating surface to dissipate heat through a composite heat exchange mode. Simply put, it is a device used for cooling electrical appliances, and you should at least know these functions when you see it in the future. It has become an essential component in modern electrical appliances, with various materials depending on the usage scenario and purpose. Because of the different materials, the usage occasions also vary. For example, there are steel, aluminum profiles, copper, and copper-aluminum composite heat exchangers. These are some of the more common types on the market today. Each type of fin heat exchanger has specific precautions during use; understanding these in advance can ensure that the heat exchanger operates in an ideal environment. Additionally, to speed up cooling, some places also use air cooling, water cooling, and other equipment.
First of all, fin heat exchangers are widely used due to their lightweight, corrosion resistance, and cost-effectiveness. During the operation of the heat exchanger, we need to pay attention to the dust on the surface of the fin heat exchanger because there will definitely be dust after long-term use. Therefore, it is essential to clean it thoroughly over time. Moreover, since the working principle of fin heat exchangers involves greater contact with air for heat exchange, a larger contact area means higher cooling efficiency. However, if the surface of the fins is covered with dust, it will obstruct the heat exchange between the fins and the air. Thus, using it in such a condition will naturally reduce the cooling effect of the fins. In harsh environments, regular cleaning of dust is even more necessary.
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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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