新武汉火车站候车厅分层空调方案模拟分析

Simulation Analysis on Stratified Air-conditioning System of New Waiting Hall in Wuhan Railway Station

分层空调以其显著的节能性和经济性在高大空间空调设计中被广泛应用。本文简要介绍了新武汉火车站高大候车厅分层空调的设计方案,并应用CFD软件对分层空调夏季设计工况下气流分布特性进行了模拟分析,得到了候车厅的速度场、温度场以及热舒适度分布情况。研究结果表明该设计方案可行,在喷口送风角度为15°时送风效果最好,可以达到设计要求的室内温、湿度与速度分布,并满足室内热舒适性的要求。该分层空调较全室空调可节能约21%。

Stratified air-conditioning system is widely used in many high and large spaces due to its significant energy-saving potential and economical benefits. In this paper,the design of the stratified air-conditloning system in the new waiting hall of Wuhan railway station was firstly presented. Furthermore, with the CFD software, simulation analysis of air flow distribution characteristics under the summer design conditions was carried out,the distribution of velocity field,thermal field and thermal comfort degree in the waiting hall were obtained. The simulation resuhs demonstrated that the application of the stratified air-conditioning system in the waiting hall was feasible. In order to satisfy the design requirements of indoor air temperature, relative humidity, velocity and thermal comfort, the best blow angle of nozzle outlet was 15°. What＇s more, the stratified air-conditioning system was 21% energy-efficient compared with traditional all room air-conditioning system.