Occupant Perception and Indoor Environmental Quality in a University Dormitory: A Case Study From South Korea

Abstract

This study examined the relationship between measured indoor environmental factors and occupant perception in a university dormitory in South Korea. Temperature, relative humidity, and carbon dioxide (CO₂) levels were measured in individual rooms, while residents completed surveys assessing their perceptions of thermal environment, air quality, lighting, acoustic environment, and overall indoor environmental quality (IEQ). The analysis revealed distinct patterns across satisfaction groups: perceptions of thermal comfort and air quality were the strongest predictors of overall satisfaction among occupants with low IEQ ratings, while perceptions of natural daylight and acoustic conditions were more influential among highly satisfied occupants. For participants highly satisfied with thermal conditions, fluctuations in humidity significantly predicted satisfaction. Similarly, for those highly satisfied with air quality, variations in CO₂ concentration emerged as a key factor. Greater variability in environmental conditions, rather than static control, was associated with higher satisfaction levels, highlighting the potential benefits of dynamic environmental management strategies. These findings offer insights into the nuanced interplay between objective indoor conditions and subjective occupant perceptions, underscoring the importance of user-centered design and operation in residential buildings such as university dormitories.