Volume 13 Issue 3
Jun.  2020
Turn off MathJax
Article Contents
ZHANG Yu-chen, WANG Fei-xiang, XU Fang-yu, HUANG Shan-jie, TAN Xu, LU Wen-long, XIAO Jian-guo, JIA Yu-chao, LUO Hong. Development of the inverted-cone diversion type heat-stop for solar telescopes[J]. Chinese Optics, 2020, 13(3): 586-594. doi: 10.3788/CO.2019-0139
Citation: ZHANG Yu-chen, WANG Fei-xiang, XU Fang-yu, HUANG Shan-jie, TAN Xu, LU Wen-long, XIAO Jian-guo, JIA Yu-chao, LUO Hong. Development of the inverted-cone diversion type heat-stop for solar telescopes[J]. Chinese Optics, 2020, 13(3): 586-594. doi: 10.3788/CO.2019-0139

Development of the inverted-cone diversion type heat-stop for solar telescopes

Funds:  Supported by National Natural Science Foundation of China (No.11803089, No. 11873091, No.11673064)
More Information
  • Corresponding author: xu_fangyu@ynao.ac.cn
  • Received Date: 03 Jul 2019
  • Rev Recd Date: 20 Aug 2019
  • Publish Date: 01 Jun 2020
  • For large-aperture ground-based open-structure solar telescopes, an increase in heat-stop temperature will result in deterioration of image quality. In particular, heat-stop, located closely to the light-passing hole, has a great influence on image quality. This is one of the problems for the Chinese Giant Solar Telescope (CGST) development plan. For solving the heat-stop temperature control problem, the overall cooling efficiency should be high and further strengthen is implemented at key locations to achieve uniform temperature control. According to the above problem, an Inverted-Cone Diversion Type (ICDT) heat-stop design is proposed, which can reduce the temperature of the light-passing hole and make the hottest area away from the light-passing hole. The simulation results of cooling efficiency and heat-stop temperature field show that this scheme is obviously superior to its predecessor. The temperature of ICDT′s heat-stop is up to 3 ℃ above ambient, which is better than GREGO′s temperature difference of 7 ℃. The research team also carried out the heat-stop temperature field measurement experiment and verified the accuracy of the temperature field simulation′s results showing that ICDT heat-stop design has good temperature control capability.

     

  • loading
  • [1]
    刘忠, 邓元勇, 季海生, 等. 中国地基大太阳望远镜[J]. 中国科学: 物理学 力学 天文学,2012,42(12):1282-1291.

    LIU ZH, DENG Y Y, JI H SH, et al. Ground-based giant solar telescope of China[J]. Scientia Sinica Physica,Mechanica &Astronomica, 2012, 42(12): 1282-1291. (in Chinese)
    [2]
    LIU Y Y, GU N T, RAO CH H. Quantitative evaluation on internal seeing induced by heat-stop of solar telescope[J]. Optics Express, 2015, 23(15): 19980-19995. doi: 10.1364/OE.23.019980
    [3]
    DENKER C, GOODE P R, REN D, et al. Progress on the 1.6-meter new solar telescope at big bear solar observatory[J]. Proceedings of SPIE, 2006, 6267: 62670A.
    [4]
    DIDKOVSKY L V, KUHN J R, GOODE P R. Optical design for a new off-axis 1.7-m solar telescope (NST) at big bear[J]. Proceedings of SPIE, 2004, 5171: 333-343. doi: 10.1117/12.518671
    [5]
    RIMMELE T R, KEIL S L, KELLER C U, et al. Technical challenges of the advanced technology solar telescope[J]. Proceedings of SPIE, 2003, 4837: 94-109. doi: 10.1117/12.456707
    [6]
    WAGNER J, RIMMELE T R, KEIL S, et al. Advanced technology solar telescope: a progress report[J]. Proceedings of SPIE, 2008, 7012: 70120I.
    [7]
    BERRILLI F, EGIDI A, DEL MORO D, et al. The heat stop for the 4-m European Solar Telescope EST[J]. Proceedings of SPIE, 2010, 7733: 77332Z.
    [8]
    LIU Y Y, GU N T, RAO CH H, et al. Heat-stop structure design with high cooling efficiency for large ground-based solar telescope[J]. Applied Optics, 2015, 54(21): 6441-6447. doi: 10.1364/AO.54.006441
    [9]
    中国科学院西安光学精密机械研究所. 基于双通道冷却的大口径太阳望远镜全吸收式热光阑: 中国, CN109164567A[P]. 2019-01-08.

    Xi’an Institute of Optics and Precision Mechanics, CAS. Large-caliber solar telescope full absorption thermal diaphragm based on dual-channel cooling: CN, CN109164567A[P]. 2019-01-08. (in Chinese)
    [10]
    VOLKMER R, EISENTRÄGER P, EMDE P, et al. Mechanical design of the solar telescope GREGOR[J]. Astronomische Nachrichten, 2012, 333(9): 816-822. doi: 10.1002/asna.201211740
    [11]
    VOLKMER R, VON DER LUHE O, SOLTAU D, et al. Optical and thermal design of the main optic of the solar telescope GREGOR[J]. Proceedings of SPIE, 2003, 5179: 270-281. doi: 10.1117/12.506710
    [12]
    COLLADOS M, BETTONVIL F, CAVALLER L, et al. European Solar Telescope: project status[J]. Proceedings of SPIE, 2010, 7733: 77330H. doi: 10.1117/12.856994
    [13]
    杨世铭, 陶文铨. 传热学[M]. 4版. 北京: 高等教育出版社, 2006.

    YANG SH M, TAO W Q. Heat Transfer[M]. 4th ed. Beijing: Higher Education Press, 2006. (in Chinese)
    [14]
    GNIELINSKI V. New equations for heat and mass transfer in the turbulent flow in pipes and channels[R]. Berlin: NASA, 1975: 8-16.
    [15]
    董韶峰, 李荫堂. 常热流密度矩形管内层流对流换热系数的数值计算[J]. 能源技术,2010,31(2):70-72.

    DONG SH F, LI Y T. Numerical simulation about convection of laminar flow through rectangular pipe under constant heat flux[J]. Energy Technology, 2010, 31(2): 70-72. (in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(7)  / Tables(3)

    Article views(1730) PDF downloads(56) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return