Numerical Simulation of Displacement Ventilation with Multi-Heat Sources in the Building

Applying the method of CFD, 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 paper analyzes influence of different influential factors. It is found that people´s requirement for comfort can be satisfied easily when the distance between heat sources is long. The temperature change of the thermal current has great influence on the indoor temperature. The rising of the thermal current temperature makes the vertical temperature gradient in the room increase. Both the heat loss of surrounding structure and the change of outdoor temperature have great influence on the indoor temperature. But it will not influence the thermal stratification characteristic of DV.