Study of Reasonable Structure of Duct for Static Pressure Air Supplyin the Air Conditioning System

In this paper the supply air uniformity of different types of static pressure supply air duct is studied andthe experimental result shows that the supply air uniformity of traditional static pressure supply air duct isn't ideal. Byanalyzing the static pressure distributed characters in the main duct points out that the variable section area duct is areasonable structure of static pressure supply air duct, because the static pressure inside the variable section area ductcan be kept easily constant. This structure of supply air duct is apparently different from the traditional variable sectionarea supply air duct. Because the static pressure can be adjusted through the static pressure chambers of supply air ductwhile the section area of duct is changed for manufacturing or setting up, the supply air uniformity of this new staticpressure supply air duct can be guaranteed.