What is a heat pipe radiator?
Using heat pipe technology, many old radiators or heat exchange products and systems can be greatly improved to produce new products. The thermal resistance of the radiator is determined by the thermal conductivity of the material and the effective area in the volume. When the volume of solid aluminum or copper radiator reaches 0.006m3, increasing its volume and area can not obviously reduce the thermal resistance. For discrete semiconductor devices with double-sided heat dissipation,
The thermal resistance of air-cooled all-copper or all-aluminum radiator can only reach 0.04℃/w, and that of heat pipe radiator can reach 0.01℃/w. Under the condition of natural convection cooling, the performance of heat pipe radiator can be improved more than ten times than that of solid radiator.
Advantages of heat pipe radiator, aluminum (copper) solid radiator and water-cooled radiator
1, with strong heat dissipation. At a wind speed of 6 meters per second,
The thermal resistance is 0103 e/w; The thermal resistance of heat pipe and water cooling is only 0. 1.0 1e/w under the same conditions. 2, high cost performance. Under the same thermal resistance, the consumption material of heat pipe radiator is only half that of aluminum (copper) solid radiator, while water-cooled radiator not only has many devices, but also needs to increase water system. At present, Gezhouba Power Plant uses loop heat pipe radiators in a high-power rectifier cabinet, including 3F, 14F and 19F. The principle of loop heat pipe is as follows: loop heat pipe consists of evaporator, steam section, condensation section, reflux section and compensation chamber. There is a group of capillary structures in the evaporator, and there are many steam channels on the inner wall or capillary structure of the evaporator. In actual use, the temperature rise of power devices in the power cabinet equipped with loop heat pipe radiator is low, and all of them are running far below their limit junction temperature of 0, which meets the heat dissipation requirements. However, due to the assembly form of loop heat pipe, the whole power cabinet is full of heat dissipation devices.
The ambient temperature in the cabinet is very high. 3. Heat pipe radiator has the advantages of both aluminum radiator and copper radiator. In the case of natural air cooling, the minimum thermal resistance can reach 0 104e/W, which realizes efficient heat dissipation under natural conditions. At the same time, there is also a fan with thermostat, which automatically starts the fan when the ambient temperature is too high, ensuring the long-term rated operation of the power device in a state far below its limit/junction temperature of 0. Moreover, there is no noise when the heat pipe radiator works normally, and there is little dust in the equipment, which brings great convenience to maintenance personnel.
The above is the introduction I brought to you. If you want to know more, please continue to pay attention to Qijia Consulting. Please look forward to more wonderful consultation.