Aluminum alloy electronic radiator
What is the method of reducing the thermal resistance of aluminum alloy electronic radiators?
Electronic heat sinks are usually heat sinks for high-power electronic components. Without external power supply, natural cooling, most of them are made of aluminum alloy profiles, cut to the required size according to the size of components, such as high-power switch tubes or triodes. Heat sinks. Of course, in special circumstances, super-power electronic components also have fans, such as switching power supply switch tube must be installed cooling fan.
In the design of an actual electronic-electronic heat sink, the increase in the width of the electronic-electronic heat sink can be used as an effective method to reduce the thermal resistance under the conditions of weight and volume allowable. The geometry of the fins influences the geometry of the ribs including thickness, height, and spacing of the ribs, and the relationship of the factors to the junction temperature. With the increasing thickness of the ribs, the thermal resistance of the electronic and electronic heatsinks does not change significantly, and the junction temperature changes slightly from the first drop to the rise, and the temperature change rate changes from negative to positive.
In fact, changing the thickness of the fins only brings about changes in the internal heat transfer performance and internal temperature field of the electronic-electronic heat sink, the contact area between the ribs and the outside air cannot be changed, and the convection heat transfer coefficient cannot be improved, so the thickness variation is to the electronic electronic radiator. The thermal resistance has little effect. In actual aluminum heat sink design, the thickness of the ribs is not a very important parameter. Excessively thick fins not only bring about increase in weight, but also cause the width of the electronic radiator and the number of fins to remain unchanged. Rib spacing decreases.
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