| 摘要: |
| 针对高速列车IGBT模块的高效散热问题,设计了一种应用于干冰微粒喷射冷却的针肋散热器。建立了三组不同针肋参数模型,通过数值模拟研究分析了针肋数量、直径、高度对散热效果的影响,得出了最优针肋散热器的针肋数量为64、直径12mm、高度45mm,相比于无肋散热器其换热基板表面温度降低了10.57℃,散热器内部干冰升华比率提高了17.2%。通过实验观测到了干冰微粒冷却流体在管内流动状态以及干冰微粒在散热器内部扰动碰撞过程,验证了模拟结果,干冰微粒喷射冷却使热源功率为1.6kW的IGBT模块保持在25℃左右,满足其散热需要,为深入研究干冰微粒喷射冷却技术提供指导。 |
| 关键词: 干冰升华 散热器 相变 IGBT模块 |
| DOI： |
| 投稿时间：2023-03-29 修订日期：2023-05-27
录用日期：2023-07-27 |
| 基金项目:国家级大学生创新训练计划项目（202210069015）；天津市研究生科研创新项目（2022SKY326） |
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| Design of High-speed Train IGBT Heat Sink Based on Dry Ice Particle Spray Cooling |
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| Abstract: |
| Aiming at the problem of high-efficiency heat dissipation of IGBT module in high-speed trains, a pin-fin heat sink applied to dry ice particle spray cooling was designed. Three sets of different pin-fin parameter models were established, and the influence of pin-fin number, diameter, and height on the heat dissipation effect was analyzed by numerical simulation, and the optimal pin-fin heat sink had 64 pin-fin numbers, a diameter of 12mm, and a height of 45mm. Compared with the no-fin heat sink, the surface temperature of the heat transfer substrate is reduced by 10.57°C, and the sublimation rate of dry ice inside the radiator is increased by 17.2%. The flow state of the dry ice particle cooling fluid in the pipeline and the disturbance and collision process of the dry ice particle inside the heat sink were observed by experiments, and the simulation results were verified. The dry ice particle spray cooling kept the IGBT module with a heat source power of 1.6kW at about 25°C to meet its heat dissipation requirements. It is necessary to provide guidance for in-depth research on dry ice particle spray cooling technology. |
| Key words: dry ice sublimation heat sink cphase change IGBT module |
