Abstract
The heat transfer characteristics of feedthrough flange under high alternating current excitation were investigated by three-dimensional finite element model. The correlations between the heat transfer behaviors and system parameters including applied current, ceramic thickness and working time were discussed comprehensively. A remarkable absorbed power beyond 100 W in flange would be produced by the electromagnetic field from wires. Under natural cooling condition, there is an obvious temperature rise about 40°C in the flange center after 10 min of current excitation. Three types of water cooling solutions acting on flange surface, e.g. line type, circle type and S type solutions, were proposed to reduce the flange temperature under high alternating current and long working time condition. By the S type water cooling mode, the best cooling effect can be achieved that the maximum temperature rise is about 20°C and the average temperature rise is less than 5°C.
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This work was supported by the National Natural Science Foundation of China (Grant Nos. 51734008, 51522102, 5132 7901 and 51474175), the National Key R&D Program of China (Grant No. 2018YFB2001800) and the Shannxi Key Industry Chain Program (Grant No. 2019ZDLGY05-10).
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Cai, X., Wang, H. Heat transfer analysis of feedthrough flange under high alternating current condition. Sci. China Technol. Sci. 63, 686–692 (2020). https://doi.org/10.1007/s11431-019-1497-4
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DOI: https://doi.org/10.1007/s11431-019-1497-4