期刊
INDOOR AIR
卷 29, 期 5, 页码 828-839出版社
WILEY
DOI: 10.1111/ina.12582
关键词
bedroom; carbon dioxide; infiltration rate; long-term measurements; residential building; windows opening behavior
类别
资金
- National Key Project of the Ministry of Science and Technology, China, on Green Buildings and Building Industrialization [2016YFC0700500]
The ventilation modalities in most Chinese residences are infiltration and opening windows. We measured infiltration rates and air change rates at night, with no attempt to change occupants' behaviors, of urban residences in five climate zones of China during four seasons. Using the CO2 decay method, we found the median infiltration rate for 294 residences to be 0.34 h(-1). Using occupant-generated CO2 as tracer gas, we determined air change rates over the course of 1 year in 46 bedrooms at night from mass balance considerations. In 54% of the measurements, windows were closed, so ventilation was only by infiltration. Windows were mainly closed when the outdoor temperature was below 15 degrees C and above 26 degrees C. The median infiltration rates did not differ appreciably among seasons and climate zones and were always less than 0.45 h(-1).
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