地铁车站空调动态负荷特性分析实践

Analysis and Practice of Dynamic Load Characteristics of Air Conditioners in Subway Stations

针对地铁车站与民用建筑的空调系统负荷计算方法差别较大,且目前行业内只进行运营远期的最不利工况点下负荷计算导致负荷计算偏大的现状,本研究针对实际地铁车站,通过充分分析客流特性、车站隧道热传递、屏蔽门漏风、车站出入口引风新风、设备发热量波动规律等因素,通过编制相关计算程序,进行了地铁车站逐时负荷的精细化计算,得到了车站公共区及设备管理用房的动态负荷分析,分析了动态负荷变化特性,分析地铁车站精细化的动态空调负荷计算方法,得到了动态负荷分布规律,可以作为后续设备选型及能耗分析的依据。

In view of the fact that the load calculation methods of air-conditioning systems in subway stations and civil buildings are quite different,and the current industry only carries out the load calculation under the most unfavorable operating conditions in the long-term operation,which leads to the current situation that the load calculation is too large.By fully analyzing the characteristics of passenger flow,heat transfer in station tunnels,air leakage from screen doors,fresh air at station entrances and exits,and fluctuation of equipment calorific value,etc.,by compiling relevant calculation programs,a refined calculation of the hourly load of subway stations is carried out,and the station publicity is obtained.The dynamic load analysis of district and equipment management rooms is carried out,the dynamic load variation characteristics are analyzed,and the refined dynamic air-conditioning load calculation method of subway stations is analyzed,and the dynamic load distribution law is obtained,which can be used as the basis for subsequent equipment selection and energy consumption analysis.