How much do you know about finned heat exchangers?
Release time:
2022-08-16 11:27
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There are many new types of equipment in the industrial field that play a significant role during use. For example, finned radiators, commonly referred to as heat sinks, are classified as 'passive heat dissipation components' in the field of electronic engineering design. When used, metals that have good thermal conductivity, are lightweight, and easy to process are attached to the heated surface, utilizing a composite heat exchange method for cooling.
There are many new types of equipment in the industrial field, which indeed play a significant role during use. For example,fin heat sink, also known as radiators, are classified as "passive heat dissipation components" in the field of electronic engineering design. During use, metals with good thermal conductivity, light weight, and easy processing are mainly attached to the heated surface, using a composite heat exchange method for heat dissipation. The fin heat sink is made of gray cast iron. It is divided into column type, wing type, column-wing type, and plate-wing type according to structural form. It includes a main body and two connecting parts. Each end of the main body is equipped with two fixing holes, and a perforation is opened in the middle part, with a joining part protruding towards one side of the fin heat sink at this perforation.
When using the fin heat sink, it mainly connects this type of product to the heat pipe through perforations and connecting parts. In fact, the connecting part extends vertically from both ends of the main body, including a vertical part and a bearing part. When using the fin heat sink, it is essential to understand that the vertical part actually includes a receiving block and two receiving blocks. The sides of the receiving block form receiving parts; in addition, the fin heat sink is parallel to the main body and has two fixing protrusions protruding at the fixing holes corresponding to the main body. It has a long service life and can last as long as the building.
The fin heat sink draws in cold air from above through a fan; during use, it mainly absorbs the heat source when its airflow passes through the lower fins and then dissipates heat. It should be noted that although this airflow direction from top to bottom differs from the cooling design of the main chassis, it can significantly reduce the overall temperature of the motherboard.
The fin heat sink is currently a commonly used device, and there are still many knowledge points involved in its use. In fact, the air convection effect produced by this type is slightly worse than that of tower coolers; however, it can simultaneously dissipate heat for peripheral memory sticks or independent graphics cards, which is a significant advantage. Moreover, fin heat sinks are lighter in construction, increasing the surface area for heat dissipation and improving cooling efficiency. For example, when used in situations like hanging industrial lights at high altitudes, traditional die-cast aluminum or profile aluminum can be relatively heavy, posing certain safety risks; thus, fin heat sinks are comparatively safer.
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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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