![]() ![]() Instead of working as a stand-alone system in interior space, displacement ventilation system can also be coupled with other cooling and heating sources, such as radiant chilled ceilings or baseboard heating. The density difference between cold air and warm air creates upward convective flows known as thermal plumes. Absorbing the heat from heat sources, the cold air becomes warmer and less dense. Reaching a relatively high velocity before rising due to heat exchange with heat sources (e.g., occupants, computers, lights). The cool air accelerates because of theīuoyancy force, spreads in a thin layer over the floor, Diffusers can be located against a wall ("wall-mounted"), at the corner of a room ("corner-mounted"), or above the floor but not against a wall ("free-standing"). System design Ī typical displacement ventilation system, such as one in an office space, supplies conditioned cold air from an air handling unit (AHU) through a low induction air diffuser. Displacement ventilation (DV) is a room air distribution strategy where conditioned outdoor air is supplied at a low velocity from air supply diffusers located near floor level and extracted above the occupied zone, usually at ceiling height. ![]()
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