Modelling natural convection in a heated vertical channel for room ventilation

摘要

Solar-air collectors installed on the south-facing walls of school buildings have been tried out in Portugal as a passive means of improving indoor air quality without prejudice to thermal comfort requriements. A numerical investigation of the behaviour of these systems, typified as veritical channels opened at both ends, is presented for typical geometries and outdoor confitions. The study is carried out with natural convection and assumes that the induced flow is turbulent and two-dimensional.