Numerical analysis of indoor air distribution and indoor air quality on three ventilation patterns

In the present paper, the Reynolds averaged NavierStokes equations and the RNG κe turbulence model are used to predict 3D airflow pattern in a room where barrier , pollutant source and centralized heat source are laid out. Three ventilational patterns are discussed. The ventilation efficiency are introduced as well as a convectiondiffusion equation for predicting the local mass fraction of pollutant. The indoor air velocity and temperature fields and the pollutant CO2 concentration distribution are studied numerically. For the three ventilation patterns, it is attained from computational results that the displacement ventilation pattern can make work area achieved the best indoor air quality, thermal comfort and better ventilation efficiency.