Abstract
The university dormitory is a typical indoor environment. The ventilation rate is a significant factor for indoor air quality in the dormitory. The objectives of this study are to determine whether the ventilation rate in the dormitory in winter meet indoor air quality standard or not, and understand the effect of window orientation, storey and time on the ventilation rate. In this study, the university student act as CO2 emission source; indoor and outdoor CO2 concentrations were measured in the same time. During the sampling, the size of the dormitory, number of people and their activity were recorded. The ventilation rates of dormitories in university were calculated by the least square method according to indoor and outdoor CO2 concentrations. The results showed that the door or window is open can increase the ventilation rates, but the effect is limited; totally speaking, the ventilation is very inadequate in dormitories in winter, and it is difficult to meet indoor air quality standard. The window orientation, storey and day and night can affect the ventilation rate. We should study it further to improve the ventilation of dormitories.
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