Hi, I try to do this using Type 97 and Contam. Regards, ------------------------------------------------ Karol Bandurski MSc. Institute of Environmental Engineering Poznan University of Technology From: Ehsan Asadi [mailto:ehsan0asadi@yahoo.com] Hi, Is there a type in TRNSYS enabling natural ventilation modelling? Specifically types which are linked to free of charge tools. Thanks Ehsan |