The stack effect using materials with high thermal inertia

The aim of this paper was to study the natural ventilation by the stack effect in a reduced model of a building to obtain the night ventilation. A vessel, with double wall, built using glass and metal and filled with water worked as a chimney. It was installed in a building with reduced scale (scale 5:1). Due to the high specific heat of the water, after its heating, a difference of the air temperature in a great part of the night is produced in the inside of the chimney. This way, the natural ventilation of the internal environment is obtained. The results show us that the chimney built with the mentioned materials and installed in a reduced building produces nice night ventilation.