| 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3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，得出最优针肋散热器的针肋数量为64、直径为12 mm、高度为45 mm，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1.6 kW的IGBT模块保持在约25 ℃，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
|
| 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）资助。 |
|
| Design of IGBT Heat Sink in High-speed Trains Based on Dry Ice Particle Spray Cooling |
| Ning Jinghong,Ren Ziliang,Song Zhipeng,Zhu Sen,Sun Luyao,Gao Xue |
| (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce) |
| Abstract: |
| To address the problem of high-efficient heat dissipation in the insulated gate bipolar transistor (IGBT) modules used in high-speed trains, a pin-fin heat sink was designed and applied to dry ice particle spray cooling. Three sets of different pin-fin parameter models are established, and the influence of the pin-fin number, diameter, and height on the heat dissipation effect is analyzed by numerical simulation. The optimal pin-fin heat sink has 64 pin-fins, a diameter of 12 mm, and a height of 45 mm. Compared with the baseline heat sink without fins, 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 processes of the dry ice particles inside the heat sink are observed experimentally, and the simulation results are verified. The dry ice particle spray cooling keeps the IGBT module with a heat source power of 1.6 kW at approximately 25 °C to meet its heat dissipation requirements. Therefore, it is necessary to provide guidance for in-depth research on dry ice particle spray cooling technology. |
| Key words: dry ice sublimation heat sink phase change IGBT module |
