Numerical and Experimental Study on the Indoor Climate in a Classroom with Mixing and Displacement Air Distribution Methods

One main challenge of air distribution in classrooms is to guarantee ventilation performance under different usage conditions. In this study, the indoor climate summer and winter conditions with occupancy densities classroom presented. Thermal condition measurements a half-size were performed test room four suppliers: wall-grilles, ceiling diffusers, perforated duct displacement ventilation. Those measured data used for CFD validation whole classroom. With simulations, parameters diffusers are compared The results show that gives best occupied zone. change efficiency can be reached 1.4 only 1 other three diffusers. velocities reasonably low (<0.3 m/s), was quite uniform which another well-performing solution classrooms. Corridor wall-grilles give thermal but have high (0.4 m/s) on perimeter side space. from diffuser unstable, causes local draft (over 20%)