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液氮温区平板蒸发器环路热管实验研究

张畅 谢荣建 张添 鲁得浦 吴亦农 洪芳军

张畅, 谢荣建, 张添, 等 . 液氮温区平板蒸发器环路热管实验研究[J]. 北京航空航天大学学报, 2019, 45(6): 1211-1217. doi: 10.13700/j.bh.1001-5965.2018.0623
引用本文: 张畅, 谢荣建, 张添, 等 . 液氮温区平板蒸发器环路热管实验研究[J]. 北京航空航天大学学报, 2019, 45(6): 1211-1217. doi: 10.13700/j.bh.1001-5965.2018.0623
ZHANG Chang, XIE Rongjian, ZHANG Tian, et al. Experimental study on a liquid nitrogen temperature region loop heat pipe with flat evaporator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(6): 1211-1217. doi: 10.13700/j.bh.1001-5965.2018.0623(in Chinese)
Citation: ZHANG Chang, XIE Rongjian, ZHANG Tian, et al. Experimental study on a liquid nitrogen temperature region loop heat pipe with flat evaporator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(6): 1211-1217. doi: 10.13700/j.bh.1001-5965.2018.0623(in Chinese)

液氮温区平板蒸发器环路热管实验研究

doi: 10.13700/j.bh.1001-5965.2018.0623
基金项目: 

国家自然科学基金 51776121

详细信息
    作者简介:

    张畅  男, 博士研究生。主要研究方向:低温热管

    吴亦农  男, 博士, 研究员, 博士生导师。主要研究方向:小型低温制冷机

    通讯作者:

    吴亦农, E-mail: wyn@mail.sitp.ac.cn

  • 中图分类号: V221+.3;TB553

Experimental study on a liquid nitrogen temperature region loop heat pipe with flat evaporator

Funds: 

National Natural Science Foundation of China 51776121

More Information
  • 摘要:

    深低温环路热管是一种高效的深低温两相传热器件,未来可广泛应用于红外探测等空间项目的低温热控系统。为有效减小热管与热负荷间的接触热阻及热管的背向漏热,采用氧化锆作为毛细芯材料,研发了氮工质平板蒸发器环路热管,重点研究了热管的自启动特性、传热性能以及在间歇性热负荷下的运行情况。结果表明:在无辅助情况下,液氮温区平板蒸发器环路热管自启动性能良好,可依靠工质扩散从室温迅速降温至液氮温区。环路热管能够在70~100 K温区稳定运行,热阻随运行温度和热负荷的上升而减小,最大传热功率为15 W,最小热阻为0.8 K/W。在蒸发器间歇性加热的情况下,环路热管可以保持温度稳定,热响应迅速,无需二次降温。液氮温区平板蒸发器环路热管有效满足了空间低温光学系统的热控制系统的热传输需求。

     

  • 图 1  平板蒸发器环路热管结构及温度测点示意图

    Figure 1.  Schematic of loop heat pipe structure with flat evaporator and temperature measurement points

    图 2  氧化锆毛细芯实物图

    Figure 2.  Zirconia capillary wick prototype

    图 3  实验系统示意图

    Figure 3.  Schematic of experimental system

    图 4  启动过程中环路热管温度变化

    Figure 4.  Change of loop heat pipe temperature in startup process

    图 5  环路热管温度随功率的变化

    Figure 5.  Variation of temperature with power for loop heat pipe

    图 6  热阻随工作温区变化

    Figure 6.  Variation of thermal resistance with operating temperature region

    图 7  环路热管间歇运行温度变化

    Figure 7.  Intermittent operation temperature variation of loop heat pipe

    表  1  环路热管结构参数

    Table  1.   Structure parameters of loop heat pipe

    参数 数值
    热管总长/mm 750
    毛细芯最大孔径/μm 1
    蒸发器尺寸/(mm×mm×mm) 90×24×10
    冷凝管线长度/mm 500
    气液管道内外径/mm 4/6
    补偿器尺寸/(mm×mm) 96×118
    储气库体积/mL 500
    蒸发器壁厚/mm 2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-10-29
  • 录用日期:  2018-12-21
  • 网络出版日期:  2019-06-20

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