Air change rates at night in northeast Chinese homes

作者：Hou, Jing; Zhang, Yufeng; Sun, Yuexia^*; Wang, Pan; Zhang, Qingnan; Kong, Xiangrui; Sundell, Jan

来源：Building and Environment, 2018, 132: 273-281.

DOI：10.1016/j.buildenv.2018.01.030

• Air change rate
• Tracer gas
• Residential building
• Natural ventilation
• Bedroom
• Occupant's behaviour

Air change rate data for dwellings in China are scarce. We carried out a study of ventilation rates in 399 homes in Tianjin and Cangzhou, China. Carbon dioxide concentration was continuously measured for 24 h in bedrooms and living rooms. The air change rate at night was calculated using a single zone mass balance model. In the whole home, the median air change rates during sleeping time for spring, summer, autumn and winter were 0.27 h(-1), 1.11 h(-1), 0.29 h(-1), 0.30 h(-1). In the child's bedroom with closed window and door, the median air change rates during sleeping time for spring, summer, autumn and winter were 0.25 h(-1), 0.25 h(-1), 0.30 h(-1), 0.37 h(-1). Air change rates in homes with open windows were significantly higher than those in homes with closed windows (p = 0.000).

• 出版日期2018-3-15
• 单位天津大学