Issues of VAV air conditioning system design

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.