Patent ID: 6790136
Filing Date: 2004-09-14
Classification: F24F,Y02B

Abstract:
In a ventilated environment including at least a first room and a second room ventilated by a common source of supply air, the first room having drawn therefrom first return air that constitutes a first portion of air returned to the ventilated environment as at least some of the supply air, the second room having drawn therefrom second return air that constitutes a second portion of the air returned to the ventilated environment as at least some of the supply air, a method of controlling a level of at least one contaminant in the supply air, comprising an act of:A) independently controlling at least one of a first flow of the first return air and a second flow of the second return air based at least on a contaminant level of the at least one contaminant in at least one of the first room and the second room.