What happens to the air when negative pressurization is in effect?

When negative pressurization is in effect, the primary phenomenon observed is that air is sucked out of an area faster than it can be replaced. Negative pressure typically occurs when the pressure inside a space is lower than the pressure outside. This pressure differential causes outside air to be drawn into the space to equalize the pressure. However, if the rate at which air is being extracted exceeds the rate at which air can enter from outside, a net loss of air occurs within that space.

This condition is relevant in various scenarios, such as during mold remediation or other containment activities, where maintaining a negative pressure environment helps to prevent the escape of contaminants. The key takeaway is that the environment is purposely designed to remove air efficiently, resulting in a continuous outflow that is not matched by incoming air, thereby creating a progressively more negative state within the enclosed area.