THIS column provides information about the use of outdoor air dampers in hot and humid climates and during hot and humid seasons in temperate climates in commercial buildings. Terms used in this ...

Ventilation to a space is often specified by an engineer based on the purpose of the space. All too often the outside air requirements are established as an unmeasured cfm value; this ultimately ends ...

Zoning in forced-air systems is accomplished by controlling dampers that are located within the ductwork system. Dampers open, close, or modulate depending on the demand from the controller. Air is ...