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陈 浩,康 伟,石秋雨,等. 重力驱动自然对流-相变耦合散热系统数值模拟[J]. 科学技术与工程, 2020, 20(32): 13188-13196.
CHEN Hao,KANG Wei,SHI Qiu-yu,et al.Numerical Simulation of Natural Convection and Phase Transition Coupling Heat Sink Driven by Gravity[J].Science Technology and Engineering,2020,20(32):13188-13196.
重力驱动自然对流-相变耦合散热系统数值模拟
Numerical Simulation of Natural Convection and Phase Transition Coupling Heat Sink Driven by Gravity
投稿时间:2019-09-30  修订日期:2020-07-07
DOI:
中文关键词:  自然对流  电力设备 两相流  传热
英文关键词:natural convection electrical equipment two-phase flow heat transfer
基金项目:(51225602)资助,国家自然科学基金项目(面上项目,重点项目,重大项目)
           
作者单位
陈 浩 MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science &
Technology
康 伟 全球能源互联网研究院有限公司先进输电技术国家重点实验室
石秋雨 全球能源互联网研究院有限公司先进输电技术国家重点实验室
李 强 南京理工大学能源与动力工程学院电子设备热控制工信部重点实验室
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中文摘要:
      为实现大功率电力设备在自然对流下的有效散热,设计了重力驱动的自然对流-相变耦合散热系统。冷凝板表面安装的翅片增大了系统散热面积。系统内部具有两相回路,通过工质在回路中的相变换热,实现热量的有效传递。通过建立重力驱动自然对流-相变耦合散热系统的流动与传热模型,模拟研究系统内部的两相流动与传热传质过程。模拟研究结果表明,系统在热量输入后能够迅速启动,充液率为40%且总功率为3600 W时,系统最高温度为350.24 K。可见该系统能够对大功率电力设备进行及时有效的散热。
英文摘要:
      A new natural convection and phase transition coupling heat sink driven by gravity is proposed for the effective heat dissipation of high-power electrical equipment under natural convection. Fins installed on the condensation substrate increase the heat dissipation area of heat sink. The heat can be transferred from evaporation substrate to condensation substrate by phase transition of working medium in two-phase fluid loop. A flow and heat transfer model of the heat sink was established and two-phase flow, heat transfer and mass transfer process in the heat sink are simulated. Simulation results indicate that the heat sink can start quickly and the maximum temperature is 350.24 K while the filling ratio is 40% and the total heating power is 3600 W. It is concluded that the heat generated by high-power electrical equipment can be dissipated effectively through the heat sink。
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