2017-10-22
Multi-zone Air Handling Units for Hospital

Multi-zone air handling units have different configurations, including 3-deck vertical supply, 3-deck horizontal supply, 2-deck vertical supply and 2-deck horizontal supply. 2-deck vertical supply is selected for this project. AHU has two paths, one with cooling coil deliver cold air and another one with heating coil deliver hot air.
Supply outlet has face & bypass dampers. The dampers are linked together and work in unison, in opposite directions, so that when the face damper (coil) is open, the bypass damper (open area) is closed, and vise versa. By adjusting the dampers’ opening, the ratio of cold air and hot air would be changed accordingly to meet the zone’s requirement.