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丙烯环路热管补偿器的可视化实验研究

刘成 谢荣建 王仕越 吴亦农

刘成, 谢荣建, 王仕越, 等 . 丙烯环路热管补偿器的可视化实验研究[J]. 北京航空航天大学学报, 2020, 46(5): 933-940. doi: 10.13700/j.bh.1001-5965.2019.0322
引用本文: 刘成, 谢荣建, 王仕越, 等 . 丙烯环路热管补偿器的可视化实验研究[J]. 北京航空航天大学学报, 2020, 46(5): 933-940. doi: 10.13700/j.bh.1001-5965.2019.0322
LIU Cheng, XIE Rongjian, WANG Shiyue, et al. Visualization experimental study of compensation chamber of a propylene loop heat pipe[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(5): 933-940. doi: 10.13700/j.bh.1001-5965.2019.0322(in Chinese)
Citation: LIU Cheng, XIE Rongjian, WANG Shiyue, et al. Visualization experimental study of compensation chamber of a propylene loop heat pipe[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(5): 933-940. doi: 10.13700/j.bh.1001-5965.2019.0322(in Chinese)

丙烯环路热管补偿器的可视化实验研究

doi: 10.13700/j.bh.1001-5965.2019.0322
基金项目: 

国家自然科学基金 51776121

详细信息
    作者简介:

    刘成  男, 博士研究生。主要研究方向:环路热管

    谢荣建  男, 博士, 副研究员。主要研究方向:空间载荷热控技术

    通讯作者:

    谢荣建, E-mail: xierongjian@mail.sitp.ac.cn

  • 中图分类号: TK124

Visualization experimental study of compensation chamber of a propylene loop heat pipe

Funds: 

National Natural Science Foundation of China 51776121

More Information
  • 摘要:

    通过采用石英补偿器和高速摄像机实现了对丙烯环路热管补偿器的可视化实验研究,重点研究了补偿器内工质的状态随充装量和传热量的变化及充装量对环路热管传热性能的影响。研究发现,容积为51.4 mL的环路热管最佳充装量约为19.7 g。充装量小于最佳充装量的各工况下,能观察到对应补偿器内工质液面高度低于引流管,蒸发器和补偿器之间相变换热强烈,引流管外壁面明显有工质的冷凝及流动,且工质冷凝和流动的速度随着传热量的增加而加快;随着充装量增加,环路热管传热热阻减小,280 K工作温度以下的传热量增大。最佳充装量对应的补偿器内液面高度浸没引流管而接近蒸发器核心通道顶端,得到280 K以下最大传热量为40 W,对应的最优传热热阻为2 K/W。充装量大于最佳充装量的工况下,补偿器内液面高度超过蒸发器核心顶端,随着充装量增加,环路热管传热热阻增大,280 K以下的传热量减小。补偿器和蒸发器核心通道内的工质分布能影响蒸发器向补偿器的漏热量,这是充装量影响环路热管性能的重要原因。

     

  • 图 1  环路热管结构示意图

    Figure 1.  Schematic of loop heat pipe structure

    图 2  补偿器与蒸发器连接示意图

    Figure 2.  Schematic of connection between compensation chamber and evaporator

    图 3  O形密封圈横切面示意图

    Figure 3.  Schematic of transverse section of O-shaped sealing ring

    图 4  实验系统示意图

    Figure 4.  Schematic of experimental system

    图 5  降温前后补偿器内液面高度变化对比

    Figure 5.  Comparison of liquid levels inside compensation chamber before and after cooling

    图 6  充装量为13.7 g时环路热管的启动过程

    Figure 6.  Start-up process of loop heat pipe with a working fluid inventory of 13.7 g

    图 7  充装量为16.7 g时补偿器内的工质状态

    Figure 7.  States of working fluid inside compensation chamber with a working fluid inventory of 16.7 g

    图 8  充装量为19.7 g时环路热管启动及运行

    Figure 8.  Start-up and operation of loop heat pipe with a working fluid inventory of 19.7 g

    图 9  充装量为22.7 g时补偿器内液面高度的变化

    Figure 9.  Variation of liquid level inside compensation chamber with a working fluid inventory of 22.7 g

    图 10  280 K工作温度以下的环路热管传热热阻

    Figure 10.  Heat transfer thermal resistances of loop heat pipe for operating temperatures below 280 K

    表  1  环路热管参数

    Table  1.   Parameters of loop heat pipe

    部件 尺寸 数值
    蒸发器 长度×外径/(mm×mm) 90×24
    长度×内径/(mm×mm) 90×20
    毛细芯 孔径/μm 1.75
    气体管线 长度×外径/(mm×mm) 1030×3
    长度×内径/(mm×mm) 1030×2
    冷凝器 长度×外径/(mm×mm) 540×6
    长度×内径/(mm×mm) 540×3
    液体管线 长度×外径/(mm×mm) 1100×3
    长度×内径/(mm×mm) 1100×2
    补偿器 长度×外径/(mm×mm) 60×24
    长度×内径/(mm×mm) 60×20
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-06-20
  • 录用日期:  2019-08-30
  • 刊出日期:  2020-05-20

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