Simulation Study Of Air Distribution In Large Space Of Station

In today's China, urbanization rate is very fast, the construction of urban will be built more. The railway station as a sign of a city, its function has been well beyond the ticketing and providing travelers a place to have a rest. With the improvement of people's living standard, people pay more attention to the thermal comfort of the station. And the air conditioning system influences the thermal comfort of station directly. So if we can design a air conditioning system which can satisfy the need of human thermal comfort and energy-saving purpose has become the focus that people pay attention to.In this paper a train station is used as an example. And CFD technology is used to set up a model. First the thermal load of the station is simulated and then different airflow organization forms are simulated. The simulation result is provided for designers as reliable theoretical reference .Firstly, using the energy consumption software DeST to simulate the winter and summer dynamic energy of the station. The result will be used for further CFD simulation.Airpak which is widely used CFD software is used to set up the model and simulate different way of airflow organization. The main plan includes ordinary air conditioning system,VAV system and the system which can change the fresh air. Through the simulation calculation of different condition, the system which can change the fresh air is the best system for the train station. The thermal comfort requirement and the purpose of energy-saving can be satisfied.Furthermore the result obtained in this thesis also indicate that using CFD technology can use less time and cost to simulate the air conditioning system. So CFD technology can predict the results for designers.