Investigation into outdoor thermal comfort conditions by different seasonal field surveys in China, Guangzhou

  • Zhaosong Fang
  • Xiwen Feng
  • Xiaoning Xu
  • Xiaoqing Zhou
  • Zhang Lin
  • Ying JiEmail author
Original Paper


Outdoor microclimatic conditions strongly affect the thermal comfort of pedestrians. A transversal field survey was conducted in Guangzhou, together with micrometeorological measurements. The outdoor physiological equivalent temperature (PET) varied from 3 to 59 °C. Regression lines were obtained to establish correlations of the mean thermal sensation vote (MTSV) with the PET bins with a width of 1 °C. Furthermore, the thermal comfort range of PET, neutral PET (NPET), and preferred PET was analyzed. The results indicated that, for the young people, thermal comfort range of PET spanned from 19.2 to 24.6 °C. The NPET and preferred PET significantly differed in different seasons. The NPET was higher in the summer than that in the winter and transitional seasons. However, the preferred PET of the summer was lower than that of the winter. The PET limits of different thermal stress categories were also confirmed, which differed from those in other cities. Thus, the impacts of adaptation on thermal comfort range were significant for people in outdoor environment.


Outdoor thermal comfort Physiological equivalent temperature (PET) Thermal adaptation Thermal comfort range Neutral temperature 



The authors thank all students who participated in the surveys.

Funding information

This study was fully supported by a grant from the National Key R&D Program of China (Project No. 2018YFC0705900) and the Opening Funds of State Key Laboratory of Building Safety and Built Environment and National Engineering Research Center of Building Technology (Project No. BSBE2018-03).


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Copyright information

© ISB 2019

Authors and Affiliations

  • Zhaosong Fang
    • 1
  • Xiwen Feng
    • 1
  • Xiaoning Xu
    • 1
  • Xiaoqing Zhou
    • 2
  • Zhang Lin
    • 3
  • Ying Ji
    • 4
    Email author
  1. 1.School of Civil EngineeringGuangzhou UniversityGuangzhouChina
  2. 2.Guangdong Provincial Key Laboratory of Building Energy Efficiency and Application TechnologiesGuangzhou UniversityGuangzhouChina
  3. 3.Division of Building Science and TechnologyCity University of Hong KongKowloonHong Kong
  4. 4.College of Architecture and Civil EngineeringBeijing University of TechnologyBeijingChina

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