VENTILATION SYSTEM OF BUILDING

摘要

PROBLEM TO BE SOLVED: To provide a ventilation system which can carry out natural ventilation within a building in accordance with the change of the ambient environment and the change of an object.SOLUTION: A ventilation system of a building A includes a vertical hole B for natural ventilation which allows the air within the building A to naturally rise and go out to the outdoor. The ventilation system includes ventilation passage interchange means T which can interchange a plurality of ventilation holes B which can communicate with a ventilation section S within the building A, and a vertical hole B communicated with the indoor space S.