Ventilation

machine with spinning blades used to create airflow

intentional introduction of outside air into a space

laboratory negative-pressure ventilation device

thumb|250px|right|Type of louver in concept thumb|250px|right|Louver used in a Stevenson screen thumb|Louver shutters in Italy thumb|250px|right|Louvered cupola bell house

protection over an automobile radiator, usually on the front

laboratory equipment

specialized type of fume hood used for biocontainment

thermodynamic device

ventilation system that recovers energy by operating between two air sources at different temperatures

machine used to measure the airtightness of buildings

process of supplying air to and removing air from an indoor space without using mechanical systems

air distribution strategy for providing ventilation and space conditioning

room air distribution strategy where conditioned outdoor air is supplied at a low velocity from air supply diffusers located near floor level and extracted above the occupied zone, usually at ceiling height

vertical passages used in mines and tunnels to move fresh air underground, and to remove stale air