变风量空调系统设计中若干问题的探讨

摘要

介绍了变风量空调系统风道设计的特征。通过分析变风量末端装置的可调比和风量测量性能，探讨了变风量末端装置选用对变风量空调控制的影响。比较了弯头组合式分流三通和 T 形分流三通的性能，建议变风量空调风道系统使用弯头组合式分流三通。从风机能耗的角度探讨了环状风道设计对变风量空调系统的影响。%Presents the characteristics of duct design for VAV air conditioning systems.By analysing the rangeability and airflow volume measurement of VAV terminal devices,discusses the effect of VAV terminal device selection on VAV air conditioning system control.Compares the performances of combined elbow diverging duct and T-shape diverging duct,and recommends the combined elbow diverging duct in VAV air conditioning duct systems.From the perspective of fan's energy consumption,analyses the influence of loop duct design on VAV air conditioning systems.