Device for the ventilation or forced aeration of a unidirectional highway tunnel. (Machine-translation by Google Translate, not legally binding)

摘要

Device for the ventilation or forced aeration of a unidirectional motorway tunnel characterized by the forced circulation of air in the same running direction of the vehicles, through the provision of a plurality of propeller propeller groups. Large diameter, regularly distributed throughout the tunnel and arranged in the most can of said tunnel, preferably near the top of the vault inside. (Machine-translation by Google Translate, not legally binding)