pressurize

(redirected from pressurizes)
Also found in: Dictionary, Thesaurus.

pressurize

[′presh·ə‚rīz]
(engineering)
To maintain normal atmospheric pressure in a chamber subjected to high or low external pressures.
References in periodicals archive ?
4 show that increasing the vent size from 5 percent of the shaft area to 25 percent cuts the size of the air handling units used to pressurize the floors by about one-half, regardless of whether the elevator shaft is open at the fire floor or not.
For the same reason, a loose floor construction with large openings around unsealed pipe chases and ductwork, loose fitting exterior construction and open doors to stairwells will reduce the ability to pressurize the livable spaces on the floors.
This type of smoke control plan would obviously be more complex than one which would pressurize all floors, but it would have an added benefit because the number of air handling units and their capacity could be reduced without jeopardizing fire safety issues.
Simply put, any plan to pressurize a space becomes more and more questionable as the pressurized space becomes more open in its construction.
Larger openings at the fire floor will drop the elevation of the Neutral Pressure Plane (NPP) and place a heavy burden on the size of air handling equipment that is used to pressurize the floor spaces.