| Citation: | FU Na, ZHANG Xi. Analysis and optimization of temperature field uniformity of proton exchange furnace[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(4): 735-742. doi: 10.13700/j.bh.1001-5965.2018.0350(in Chinese)
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Aimed at the problem of temperature field uniformity of proton exchange furnace, combined with the structural characteristic of the furnace, temperature control algorithm was developed based on FLUENT user-defined function (UDF). Based on this, various heating and temperature control schemes were proposed. The FLUENT software was used to simulate temperature field of the furnace under different schemes. The relationship between the temperature field uniformity and the placement of the sensor and the height of the heating wire under different temperature control methods was analyzed to find the best scheme. The results show that the temperature field uniformity is best when three temperature controllers are used, the positions of three sensors are respectively arranged in the middle of three heating wires, and the height of heating wire is arranged 4 times the length of the uniform temperature zone. The maximum temperature deviation in the uniform temperature zone is 0.03℃. For a given structure of the vertical furnace, increasing the height of the heating wire and optimizing the design of the sensor layout and temperature control method of the furnace body can improve the temperature field uniformity. This method provides ideas for optimizing temperature field uniformity of the same type of electric heating furnace.
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