Natural ventilation research activities undertaken in the framework of PASCOOL.

Europe. Numerous studies have been devoted to the analysis of the physical phenomena related to natural ventilation. These phenomena are very complex and our degree of understanding them often leaves a lot to be desired. Research on this topic within the framework of PASCOOL included experimental and modeling work aiming to fill existing gaps in our knowledge of indoor air conditions in naturally ventilated buildings. An extensive experimental program was carried out in full scale buildings and test cell facilities during the summer period in Greece, Belgium, Spain, Switzerland and Portugal. Existing models were validated and new ones were proposed. This paper gives a brief description of the experimental work and summarizes the results from the data analysis and model development within PASCOOL.