双风机空调系统倒灌新风的模拟计算及控制方法探讨

Discussion on Simulation Calculation and Control Method of Fresh Air Intrusion in Double Fan Air Handling Unit

针对双风机空调机组,若采用新风阀、回风阀、排风阀联动控制方案,本文从模拟计算、现场实测两方面分析了可能导致新风从排风阀处倒灌的物理条件,并提出了防止此现象发生的控制方案。本文研究成果有助于空调系统合理利用新风,提高室内空气品质,减少空调机组不必要的能源浪费。

If the traditional linkage control strategy for controlling fresh air damper, return air damper and exhaust air damper is used in double fan AHU, This article, in terms of simulation and field measurement, analyzes the physical condition that would leads to the possibility of fresh air intrusion in exhaust air damper and proposes the control scheme to prevent such phenomenon. The research results contribute to the rational utilization of fresh air in AHU, the improvement of indoor air quality and the reduction of unnecessary energy consumption in AHU.