Numerical Research on Indoor Airflow Organization and Air Quality

The evaluation indexes of air distribution,thermal comfort and indoor air quality are analyzed.The ventilating modes are sorted into displacement ventilation and mixed ventilation,and the indoor airflow is simulated with the professional software Airpak for HVAC.A small room is simulated on the temperature,velocity,CO2 concentration,mean age of air,PMV and PPD.According to the simulated results,indoor air quality,human thermal comfort and air conditioning are affected by different airflow,and the displacement ventilation will supply better air quality and efficient utilization of energy as well as air sending and returning from the top-side.