Desk fans for the control of the convection flow around occupants using ceiling mounted personalized ventilation

► A ceiling-mounted PV nozzle assisted by desk-mounted fans was modeled. ► The predicted flow characteristics were validated experimentally. ► The nozzle was able to deliver improved air quality to the occupants breathing zone. ► The fans permitted efficient delivery of fresh air by suppressing the rising plumes. ► The system provided considerable energy savings when compared to mixing systems.