pressure (air)
[AIVC, Air infiltration and ventilation glossary, 1992]:the force per unit area that air exerts on any surface in contact with it. (SI Units, Pascal (Pa) 1 Pa is equivalent to 1 N/m2).
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pressure at maximum air volume flow
[EN 13141-4:2021, 3.5]: [EN 13141-7:2021, 3.13]external static pressure difference corresponding to the maximum air volume flow.
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[AIVC, Air infiltration and ventilation glossary, 1992]:A method of estimating the leakage of a building by releasing air inside the building causing instant pressurization, the pressure returning to normal as the air leaks out. The rate of reduction of the … Continue reading →
pressure boundary
[ASHRAE Standard 62.2]:primary air enclosure boundary separating indoor and outdoor air. For example, a volume that has more leakage to the outside than to the conditioned space would be considered outside the pressure boundary. Exposed earth in a crawlspace or … Continue reading →
pressure coefficient
[AIVC, Air infiltration and ventilation glossary, 1992]:a dimensionless coefficient relating the velocity pressure on the outer surface of the building to the velocity pressure derived from the mean wind velocity at a reference point.
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