Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of local heating on thermal comfort of standing people in extremely cold environments
Abstract Most snow games at the 2022 Winter Olympics will be held in Chongli, where the lowest temperature is predicted to reach −15 °C or even lower, according to the historical temperature data from the past ten years. Thus, audiences watching games in open-air venues might suffer from this extremely cold environment. In this study, basic analyses on the body thermal comfort of the standing people were conducted at a mean temperature of −13.8 °C in a cryogenic chamber, and the effectiveness of local heating measures for the feet, hands, and back that could be adopted to standing audience was evaluated. Eight male subjects participated in the experiment; subjective evaluations were performed, and the physiological parameters and energy consumption of the heating equipment were recorded. The results show that heating insoles (43.9–48.9 °C), heating railings with armrests (54 W, for two hands), and backrests (82 W) significantly improve the overall and local thermal comfort of the subjects.
Highlights Evaluated the effects of different heating measures at a temperature of – 13.8 °C. Analyzed subjective evaluations and physiological parameters. Heating insoles with a surface temperature of 43.9–48.9 °C were preferred for feet. Heating armrests with a power of 54 W were sufficient for hands through conduction. Heating backrest with a power of 82 W was sufficient for torso through conduction.
Effects of local heating on thermal comfort of standing people in extremely cold environments
Abstract Most snow games at the 2022 Winter Olympics will be held in Chongli, where the lowest temperature is predicted to reach −15 °C or even lower, according to the historical temperature data from the past ten years. Thus, audiences watching games in open-air venues might suffer from this extremely cold environment. In this study, basic analyses on the body thermal comfort of the standing people were conducted at a mean temperature of −13.8 °C in a cryogenic chamber, and the effectiveness of local heating measures for the feet, hands, and back that could be adopted to standing audience was evaluated. Eight male subjects participated in the experiment; subjective evaluations were performed, and the physiological parameters and energy consumption of the heating equipment were recorded. The results show that heating insoles (43.9–48.9 °C), heating railings with armrests (54 W, for two hands), and backrests (82 W) significantly improve the overall and local thermal comfort of the subjects.
Highlights Evaluated the effects of different heating measures at a temperature of – 13.8 °C. Analyzed subjective evaluations and physiological parameters. Heating insoles with a surface temperature of 43.9–48.9 °C were preferred for feet. Heating armrests with a power of 54 W were sufficient for hands through conduction. Heating backrest with a power of 82 W was sufficient for torso through conduction.
Effects of local heating on thermal comfort of standing people in extremely cold environments
Deng, Yue (Autor:in) / Cao, Bin (Autor:in) / Liu, Bin (Autor:in) / Zhu, Yingxin (Autor:in)
Building and Environment ; 185
31.08.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch