Effects of Space Geometry, Season and Weather Condition on Different Components of Outdoor Thermal Radiation

  • Kuixing Liu
  • Wenyu Liu
  • Tingting Gan
  • Dayi LaiEmail author
  • Gang Liu
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


Thermal radiation is an important component of outdoor thermal environment since it accounts for a significant part of thermal load on human body. This study investigated the radiation fields in two outdoor spaces with different Sky View Factors (SVFs) in summer and autumn, and under sunny and overcast weather conditions. The result shows that the decrease of SVF significantly reduced the short-wave radiation due to the block of the sun. In contrast, the change in SVF had a much smaller impact on the level of long-wave radiation. The total level of radiation among seasons had a huge difference, as the difference in the Tmrt among seasons exceeded 30 °C. Weather condition had a smaller impact on the total level of radiation than season, as the Tmrt on a sunny day was only about 10 °C higher than that on an overcast day. The findings of this study provide a database for studying the radiation field and thermal comfort in outdoor spaces.


Outdoor thermal comfort Outdoor radiation Outdoor thermal environment Sky view factor 



This research is financially supported by the National Natural Science Foundation of China (No. 51708400).


  1. 1.
    Thorsson, S., Lindberg, F., Eliasson, I., Holmer, B.: Different methods for estimating the mean radiant temperature in an outdoor urban setting. Int. J. Climatol. 27(14), 1983–1993 (2007)CrossRefGoogle Scholar
  2. 2.
    Kántor, N., Kovács, A., Lin, T.P.: Looking for simple correction functions between the mean radiant temperature from the “standard black globe” and the “six-directional” techniques in Taiwan. Theoret. Appl. Climatol. 121(1–2), 99–111 (2015)CrossRefGoogle Scholar
  3. 3.
    Tan, C.L., Wang, N.H., Jusuf, S.K.: Outdoor mean radiant temperature estimation in the tropical urban environment. Build. Environ. 64, 118–129 (2013)CrossRefGoogle Scholar
  4. 4.
    Krüger, E.L., Minella, F.O., Matzarakis, A.: Comparison of different methods of estimating the mean radiant temperature in outdoor thermal comfort studies. Int. J. Biometeorol. 58(8), 1727–1737 (2014)CrossRefGoogle Scholar
  5. 5.
    Wang, S., Li, Y.: Suitability of acrylic and copper globe thermometers for diurnal outdoor settings. Build. Environ. 89, 279–294 (2015)CrossRefGoogle Scholar
  6. 6.
    VDI.: Methods for the human-biometerological assessment of climate and air hygiene for urban and regional planning. Part I: Climate, VDI guideline 3787. Part 2. Beuth, Berlin (1994)Google Scholar
  7. 7.
    ASHRAE.: ASHRAE Handbook (SI), Fundamentals. American Society of Heating. Refrigerating and Air-conditioning Engineers, Inc., Atlanta (2009)Google Scholar
  8. 8.
    ISO7726 Ergonomics of the Thermal Environment Instruments of measuring physical quantities. ISO, Switzerland (1998)Google Scholar
  9. 9.
    Lai, D., Guo, D., Hou, Y., Lin, C., Chen, Q.: Studies of outdoor thermal comfort in northern China. Build. Environ. 77, 110–118 (2014)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Kuixing Liu
    • 1
  • Wenyu Liu
    • 2
  • Tingting Gan
    • 2
  • Dayi Lai
    • 3
    Email author
  • Gang Liu
    • 1
  1. 1.School of ArchitectureTianjin UniversityTianjinChina
  2. 2.Tianjin International Engineering Institute, Tianjin UniversityTianjinChina
  3. 3.Department of Architecture, School of DesignShanghai Jiao Tong UniversityShanghaiChina

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