Noun
stack effect (plural stack effects)
The phenomenon of air buoyancy leading to the movement of air into and out of buildings, chimneys, etc., which may drive natural ventilation, air infiltration, and fires.
Synonym: chimney effect
Stack effect main The Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue gas stacks, or other containers due to buoyancy. Source: Internet