稳定送风温度的地铁站通风空调控制模式节能适应性分析
Energy saving adaptability analysis of underground railway station ventilation and air conditioning control modes with stable supply air temperature
摘要：
针对地铁站空调大、小系统运行时风水协同调节难题，通过分析主要设备组合式空调器水侧及风侧的换热过程，提出了变风量运行和定风量运行控制方案：变风量运行时稳定送风温度通过调节风量来适应动态负荷的变化，定风量运行时以稳定回风温度为目标来控制水量从而稳定地控制换热量。该方案能够在现场设备上确认设计参数，在实际运行过程中做到适时适量，并彻底杜绝小温差现象，为提高制冷机效率及实现多站联合供冷提供了手段。
Abstract：
Aiming at the problem of air and water coordinated regulation during the operation of large and small air conditioning systems in underground railway stations, through the analysis of the heat exchanging process between the water side and the air side of the modular air handling unit, proposes the variable air volume operation and constant air volume operation control scheme: when in variable air volume operation mode, stabilizes the supply air temperature and adjusts the air volume to match the change of the dynamic load, when in constant air volume operation mode, taking the stable return air temperature as a target, adjusts the water volume to control stably the heat transfer. The scheme can confirm the design parameters in the field equipment, achieve timely and appropriate amount in the actual operation process, and completely eliminate the phenomenon of small temperature difference, which provides a means to improve the cooling efficiency and realize combined cooling supply of multiple stations.
Keywords:undergroundrailwaystation,airconditioningsystem,airandwatercoordination,modularairhandlingunit,variableairvolume,constantairvolume