Unbalanced Return Air in Commercial Buildings
Research in 88 central Florida commercial buildings during the last decade has found that 26% of the air distribution systems had substantially unbalanced return air. Unbalanced return air occurs when there is a restriction to air flow between the supply discharge and the return air, creating positive and negative pressure fields throughout the building. Severe consequences in commercial buildings can occur as a result of unbalanced air flows. This paper examines unbalanced return air and its consequences in three commercial buildings, and explains why balancing air flow in buildings is a critical part of maintaining a healthy and energy efficient building.
Buildings - Ducts
Florida Solar Energy Center and Withers, Jr., Charles, "Unbalanced Return Air in Commercial Buildings" (2006). FSEC Energy Research Center®. 510.