Displacement Ventilation Numerical Simulation Analysis And Technical And Economic Research

This paper is mainly made up of two parts. One is to apply Computational Fluid Dynamics in turbulent flow of displacement ventilation room. Study the air-flow structure, velocity field, temperature field, the degree of contamination and the law of heat exchange on the condition of convection. Then the results of numerical simulation are visualized, the law and character of airflow distribution and the application of displacement ventilation are discussed. At the same time, the results of simulation proved that displacement ventilation is truly good designing project of airflow in conditioning room, can improve the quality of air in room, and can make personnel live in fresh air.The other is to study technique economic of displacement ventilation. In case of the same hardware of office building, compare technique economic of displacement ventilation to technique economic of traditional ventilation up, dark mathematics is calculation tool. Make theoretical analysis on mathematical model, objects judged, weigh, the degree belonging to and so on, and calculate matrix equations with the software of Matlab. The results studied show that displacement ventilation is superior to traditional ventilation up in technique economic, displacement ventilation not only gives us fine air-flow in room, but also saves energy.