Vertical Laminar Air Flow

Laminar air flow is air flow that constantly moves at the same speed in the same direction. In cleanrooms, a vertical laminar flow room is an enclosure where 100% of the ceiling provides filtered air downwards from the ceiling. Because of the 100% filter coverage, it creates an ultra-clean environment.Laminar flow hoods are available in horizontal or vertical airflow configurations. A horizontal flow hood will move air from the back of the unit through HEPA or ULPA filters and to the front of the work surface. A vertical flow hood will move air from the top of the unit through filters and down to the work surface.The horizontal air flow, or HAF, concept utilizes the principle that air moving in a coherent horizontal pattern in a building, like a greenhouse, needs only enough energy to overcome turbulence and friction loss to keep it moving.