Natural ventilation in an enclosure induced by a heat source distributed uniformly over a vertical wall

A simple multi-layer stratification model is suggested for displacement ven tilation in a single-zone building driven by a heat source distributed unif ormly over a vertical wall. Theoretical expressions are obtained for the st ratification interface height and ventilation flow rate and compared with t hose obtained by an existing model available in the literature. Experiments were also carried out using a recently developed fine-bubble modelling tec hnique. It was shown that the experimental results obtained using the fine- bubble technique are in good agreement with the theoretical predictions. (C ) 2000 Elsevier Science Ltd. All rights reserved.