需求控制通风技术在地下商场的节能研究

结合地下商场建筑独特的热工和负荷特点,建立了适合于地下商场建筑的新型DCV模式.该模式将CO2体积分数控制与常规的温控VAV系统相结合,同时实现对空气品质、温度的PID控制,并确立全年工况自动切换策略.利用动态仿真系统进行建模,并以上海实际地下商场建筑为对象,进行全年的动态运行计算.结果表明:提出的DCV系统比定风量系统全年节能22.2%,比常规VAV系统全年节能17.5%.说明该技术在地下商场类建筑应用时,可以同时实现对室内空气品质、温度的良好控制,并且在最大限度上节省了能耗。

Energy saving potential of demand control ventilation system for underground store

Considering the unique thermal and load characteristics of underground store,a new DCV strategy has been established in this study.Combining the features of CO2 control with conventional temperature control VAV system,this new system can achieve the PID control for both CO2 and temperature,and a hand-off auto switch mode can be used to operate the system automatically.The system has been modeled by a dynamic simulation system,and a simulations for an existent underground store in Shanghai has been carried out.The results show that comparing with the conventional CAV system and VAV system,about 22.2% and 17.5% of the annual energy consumption can be saved,respectively,which demostrates that the DCV strategy is an acceptable technique to control thermal environment and indoor air quality simultaneously in underground stores.