屏蔽门制式地铁车站环控系统过渡季运行策略研究

从地铁车站的舒适性和节能角度出发,对其环境控制系统存在普遍争议的过渡季运行模式展开讨论。首先基于能耗最低原则选出全新风空调模式和单排通风模式两种可能的运行模式;再运用理论推导给出两种模式的切换温度条件,并总结出切换温度的计算方法。根据此计算公式,对于包括室内负荷、制冷系统性能系数、风机效率、风道阻力、送风温差等主要影响因素进行分析。利用此计算公式,给出不同室内负荷、制冷系统性能系数和风机效率的切换温度线算图,此计算方法和线算图可用于实际工程的运行模式分析,从而能够实现地铁车站环境控制系统过渡季运行的规范化和节能化。

Operation Strategy of Environment Control System in Subway Station with Platform Screen Doors during Transition Seasons

The demand of comfort and energy-efficiency in subway stations indicates that their environment control system operation strategy requires improvement, especially during transition seasons, when there is no consensus on environmental control systems. Primarily, two possible modes, including a completely fresh air conditioning and back/exhaust fan-ventilation mode, were proposed based on the minimum energy consumption principle. The method of calculating the transfer temperature condition via theoretical analysis is presented in this paper. The calculation formula indicates that factors including indoor cooling load, performance of chiller and fan, resistance of air duct, and supply air temperature show an effect on the value of transfer temperature. Using the proposed formula, the transfer temperature diagram was presented. The formula and diagram are useful in engineering analysis and provide guidance to the optimal operation in subway stations during transition seasons.