成都地铁环控设计中系统模式比选

针对成都地区的气象条件、地铁列车运行模式、客流量等因素,重点研究开式、屏蔽门式、开/闭式和开闭混合式系统模式的可行性。采用简化的半经验法,对开式系统和屏蔽门系统中车站和隧道内的温度变化进行计算。引入活塞风通风模型,对开/闭式系统中闭式运行时的活塞风影响进行分析,并建立相应的负荷及温度分析模型。将开闭混合式系统中非空调车站内空气作为一个控制体,用能量守恒原理,分析与空调车站相邻的非空调车站内空气的温度变化。根据热力过程分析比较结果,提出适合成都地铁环控系统模式的建议。

Comparison of System Concepts in the Environment Control System Design of Chengdu Metro

Considering some important factors such as meteorological phenomena, mode of operation, and volume of passenger flow, the feasibility of several system concepts were studied, including open ventilation system, platform screen door system, open/closed system, and open-closed mixing system. Simplified quasi-empirical method was used to calculate the variation of temperature in station and tunnel for open system and platform screen door system, respectively. Piston air ventilation model was introduced to analyse the effect of piston when closed mode was operated in open/closed system, models of thermal load and temperature were built correspondingly. When the open-closed mixing system was adopted, energy conservation principle was used to analyse the variation of temperature in unairconditioned station which abuts on airconditioned station, while air in airconditioned station was regarded as a control volume. Based on these study, the reasonable advice of system concept suitable for the environment control system of Chengdu metro was proposed.