Evaluation of indoor air quality in low-rise and high-rise apartment units in Hanoi, Vietnam

Tóm tắt

Indoor environmental quality during the operational phase of residential buildings plays a critical role in ensuring long-term occupant health and comfort. As part of the CAMaRSEC research project, a year-long measurement campaign of indoor microclimate conditions was conducted in 49 apartment units located within 15 high-rise residential buildings in Vietnam. Key parameters examined included temperature, relative humidity, indoor CO₂ concentrations, window orientation, and floor level. Apartments situated on lower floors and higher floors with naturally ventilated living rooms were selected to assess and compare indoor environmental quality by analysing thermal–humidity conditions, bioclimatic comfort, and temporal variations across units. Results reveal small differences in indoor microclimate conditions between low-rise and high-rise units. The high-rise units also show slightly higher indoor CO₂ concentrations due to prolonged periods of door-closing and tight seals. Based on these findings, the study proposes targeted recommendations aimed at improving indoor air quality.