In order to understand the differences in thermal environments before and after the heating shutdown in cold regions and explore the variation patterns of occupants'thermal comfort,a study was conducted in student dormitories at a university in Xi'an,a cold city in China.The research employed a combined approach of objective thermal environment measurements and subjective questionnaire surveys.The results revealed that the indoor temperature was higher before the heating shutdown,and the students perceived a warmer sensation before the shutdown.The thermal acceptability and satisfaction rates were lower after the heating shutdown,and the acceptance of slightly colder or hotter environments decreased as well.The comfortable temperature range that satisfies an 80%satisfaction demand is from 21.4℃ to 24.1℃ before heating shutdown,and is from 19.2℃ to 24.8℃ after heating shutdown.Additionally,the dormitories were drier before the shutdown.Based on thermal environment measurements and questionnaire results,we aim to provide specific optimization recommendations for heating strategies in university dormitories in the Xi'an region.Meanwhile,we hope to offer insights for research on thermal comfort in university dormitories in cold regions.
before and after heating shutdowncold zonecollege dormitorythermal environmentthermal comfort