Study On The Character Of Indoor Air In House With Displacement Ventilation System

Abstract

Abstract Applying the method of computational fluid dynamics, velocity and temperature fields of three-dimensional displacement ventilation system with double heat sources are numerically simulated. Comparisons of computational results with experimental data are made. The velocity and temperature distribution of indoor air in houses with displacement ventilation system with single and double heat sources were studied. Two different cases of heat source are analyzed and compared. The results show that there are three layers in vertical temperature fields of displacement ventilation system with single or double heat sources, and the vertical temperature distribution of single heat sources is different from that of double heat sources. Furthermore, under the condition of two heat sources, the displacement ventilation parameters can’t be simply computed according to single heat sources inlet parameters, therefore the interaction between heat sources should be considered.