Patent ID: 8419348

Claim:
A fan array fan section in an air-handling system to supply air to a building, comprising: an air handling compartment having a discharge plenum configured to deliver air to a ventilation system for at least a portion of the building; a fan array of at least three fan units positioned in the air handling compartment, the fan units configured to be ON and OFF, wherein the fan units that are ON have sufficient air flow capacity to at least meet a specified air capacity for at least the portion of the building, wherein the air handling compartment includes multiple chambers arranged in an array where at least a portion of the chambers are stacked adjacent one another in at least one row or column, wherein the fan units are positioned in corresponding chambers of the air handling compartment; and an array controller programmed to meet a first air demand by operating all of the fan units at a first fan speed and to meet a second air demand by operating a subset of the fan units at the first fan speed.