Dead air space can have different meanings depending on the context. Here are some definitions:
- Unventilated air space: According to Merriam-Webster, dead air space is an unventilated air space.
- Lung dead space: In physiology, dead space represents the volume of ventilated air that does not participate in gas exchange. There are two types of dead space: anatomical dead space and physiologic dead space. Anatomical dead space is the volume of air that fills the conducting zone of respiration, while physiologic dead space is equal to anatomical plus alveolar dead space.
- Spaces between panes of glass: Dead air space can also refer to the spaces between panes of glass in insulated glazing.
- Smoke alarms: Dead air space is an unventilated space where air doesnt circulate. It often occurs where corners meet, like in the apex of a cathedral ceiling, and can be a problem for smoke alarms.
In summary, dead air space can refer to an unventilated air space, the volume of ventilated air that does not participate in gas exchange, the spaces between panes of glass in insulated glazing, or an unventilated space where air doesn't circulate.
