Maintaining a lower air pressure within a defined space compared to its surrounding environment is a technique used in Heating, Ventilation, and Air Conditioning (HVAC) systems. This pressure differential ensures that air flows into the controlled area, preventing contaminants from escaping. A common example is its use in hospital isolation rooms, where it prevents airborne pathogens from leaving the room and infecting other patients or staff.
The significance of this pressure control method lies in its ability to contain airborne contaminants and prevent their spread. Benefits include improved indoor air quality, reduced risk of cross-contamination, and enhanced safety in environments where hazardous materials are present. Historically, its application has evolved alongside advancements in HVAC technology and increasing awareness of airborne disease transmission.
