What is positive and negative pressure.

Positive and negative pressure this two term you might find in lots of engineering applications in mechanical & electrical engineering. Like a transformer room, switchgear room, gas processing unit needed to be maintained in either negative or positive pressure as it requires.

For both the negative and positive pressure, the room must have to be air tight.

What is positive pressure

In simple word a room will be in positive pressure if the air pressure in the room is higher than that of the surroundings air pressure. So no air will enter in to the room. If any leakage exist, air will egress (flow outward).

Positive pressure is used where outer air is not required in the room. Like in operation theater of hospital surroundings air might carry air-borne germs. Or in some production areas where outer air might deviate the quality of product like in pharmaceutical industries.

What is Negative pressure

In simple word a room will be in negative pressure if the air pressure in the room is lower than that of the surroundings air pressure. So no air flow from the room under negative pressure. If any leakage exist, air will ingress (flow inward).

Negative pressure has some special use like in Generator room, boiler room, transformer room. The harmful vapor or odor is kept inside the room and control exhaust system is done safely.
negative and positive pressure

Got Something To Say:

Your email address will not be published. Required fields are marked *