Vertical Swirl Diffuser
The VSD uses a vertical swirl pattern to supply air into the space. The swirling air rapidly mixes due to the turbulent flow. The high induction transports air from the floor level and quickly equalizes the supply and room air temperatures in the occupied zone. The discharge mixes within a turbulent cone in the occupied zone. The VSD swirl diffuser can be placed within 1.5 - 3 ft. of an occupant while maintaining a draft rate between 10-15 percent people dissatisfied according to ASHRAE 55-2004.