Technical Booklet K Ventilation·Page 13
Passive Stack Ventilation (PSV)
A natural ventilation system using ducts from room ceilings to roof terminals, powered by temperature differences and wind effects.
Passive stack ventilation (PSV) – a ventilation system using a duct from the ceiling of a room to a terminal on or above the roof, which operates by a combination of the natural stack effect (i.e. the movement of air due to the difference in temperature between the inside and outside) and the effect of wind passing over the terminal.
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