| Summary: | To better understand the extent of different ventilation strategies, a set of multi-zone models of a comprehensive office building in Harbin were conducted based on CONTAMW. The main purpose aims to assess various factors affecting the concentration of indoor CO2 in real situations by building network models, in order to seek appropriate ventilation control strategies to improve indoor air quality. Firstly, under the combined action of stack effect and wind pressure, the model was verified by field measurement. Secondly, CO2 concentration peak value, attenuation rate and air exchange rate were analysed in conference rooms on different floors under typical seasons with the doors and windows closed. Moreover, different doors and windows opening schedules of conference rooms were set during the meeting to reduce CO2 concentration. Results demonstrate that CO2 concentration in conference rooms are affected by many factors including different climatic parameters, height of building, building envelope leaking characteristics, occupant participated ventilation behaviour etc. and multi-zone simulation analysis shows the necessity of its application at comprehensive building. The study highlights the need for effective guiding significance of ventilation control to reduce the concentration of indoor CO2 in areas where there are more people indoors in short period of time, which is also meaningful for the personnel health and building design.
|
|---|