Huang, Xin;
Xiao, Ye;
Chen, Jiani;
Wei, Shen;
Zhou, Haixia;
Miao, Wanlin;
Kang, Ruixiang;
... Yu, Wei; + view all
(2025)
Developing a practical method coupling the impact of temperature, humidity, and air velocity on human acceptable temperature in warm environment.
Building and Environment
, 285
(Part A)
, Article 113566. 10.1016/j.buildenv.2025.113566.
![[thumbnail of Wei_Developing Manuscript (Clean Version).pdf]](https://discovery.ucl.ac.uk/style/images/fileicons/text.png) |
Text
Wei_Developing Manuscript (Clean Version).pdf Access restricted to UCL open access staff until 21 August 2026. Download (4MB) |
Abstract
In hot-summer and cold-winter regions of China, occupants often use fans to provide thermal comfort in warm environments. However, there is a lack of research on the air velocity compensation of thermal comfort boundaries under the effect of heat-humidity coupling. This study used the Griffiths method in conjunction with standard effective temperature (SET) to objectively evaluate the effects of air movement on humidity, acceptable temperature, and physiological responses. Participants conducted experiments in climatic chambers with three temperatures (28 ℃, 30 ℃, and 32 ℃) and three relative humidity conditions (30 %, 50 %, and 90 %) with different air velocities. The results indicate that SET can effectively reflect the average trend of changes in human skin physiological indicators, but it has limitations in reflecting transient changes. Under the coupling effect of temperature, humidity, and air velocity, the improvement effect of air velocity on high-humidity environment was significantly better than that of low-humidity environment. The negative impact of high humidity begins to manifest when the air temperature exceeds 27.8 ℃. The comfort range of SET in the hotter environment is 22.6~27.0 ℃. With an airflow of 0.8 m/s, the upper acceptable temperature limits in 30 % RH, 50 % RH, and 90 % RH environments can be extended to 31.6 ℃, 31.4 ℃, and 29.2 ℃, respectively. These limits exceed those specified in the ASHRAE 55 standard. These results can be used as a reference for the design of air velocity in hot and humid environments, with consideration of thermal comfort and sustainability.
| Type: | Article |
|---|---|
| Title: | Developing a practical method coupling the impact of temperature, humidity, and air velocity on human acceptable temperature in warm environment |
| DOI: | 10.1016/j.buildenv.2025.113566 |
| Publisher version: | https://doi.org/10.1016/j.buildenv.2025.113566 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Thermal comfort Air movement Hot and humid environments Thermal adaptation Acceptable temperature-air velocity zones |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10212593 |
Archive Staff Only
 |
View Item |
