基于数值模拟的某铁路客站自然通风节能研究

Research on Energy Saving of a Railway Passenger Station by Natural Ventilation Based on Numerical Simulation

结合西部某铁路客站的工程实际,提出了采用自然通风措施降低铁路客站能耗的技术方案。为了验证该方案的有效性,分别建立了自然通风仿真模型以及对能耗仿真模型进行了数值模拟分析。分析结果表明:客站采用的自然通风方案,其室内风速场可以满足人员舒适要求;并且,当客站在制冷季采用“自然通风+常规空调”方案降温时,相较普通制冷方案,在制冷、照明和通风设备共3个用能领域,总计可以减少碳排放15876.7 kg,节约能耗58370.16 kW·h,节能率为21.13%。

Based on the engineering practice of a railway station in western China,this paper puts forward a technical scheme to reduce the energy consumption of railway stations by adopting natural ventilation measures.In order to verify the effectiveness of the scheme,a natural ventilation simulation model and an energy consumption simulation model were established for numerical simulation analysis.The results show that the station adopts natural ventilation and the indoor wind speed field meets the requirements of personnel comfort.In addition,when the passenger station adopts“natural ventilation+conventional air conditioning”scheme,compared with the ordinary refrigeration scheme,the total carbon emission can be reduced by 15876.7 kg and energy consumption can be saved by 58370.16 kW·h in the three energy consumption areas of refrigeration,lighting and ventilation equipment,with an energy saving rate of 21.13%.