Static pressure is defined as “the pressure exerted by a still liquid or gas, especially water
or air1
.” For turkey growers, this simply relates to the occurrence of a slight decrease in pressure
within a turkey building relative to outside air pressure when one or more exhaust fans are turned
on. It is important that we understand this concept because the use of exhaust fans, or negative
pressure ventilation, is the most common form of power ventilating turkey buildings in Utah.
Negative pressure ventilation is also the easiest and most efficient method to control air
exchange.