Primary air (100% outside air) is dehumidified to between 50-57 degree F dew point and is used to:
- Control latent requirements of the space
- Provide fresh air to the occupants
- Pressurize the beam plenum
The primary air then passes through an array of formed nozzles along the length of the beam. The jets of air discharged from the nozzles cause room air (secondary air) to be drawn through the unit mounted coil via induction.
The coil is serviced by chilled water which is maintained at 2-8 degrees F above the dew point of the primary air. The localized recirculation of room air provides substantial sensible cooling to space at exceptionally low acoustic signatures (NC18-NC26).
As a result of the reduction in total fan power and higher chilled water operating temperatures, the building HVAC operating cost can be reduced by as much as 50% compared to “all-air” systems.