Methods and apparatus for measuring the tightness of enclosures
Disclosed are methods and apparatus for measuring tightness of an enclosure such as a building by utilizing alternating pressurization techniques. One method comprises providing apparatus capable of causing an internal volume change for the enclosure, the apparatus including a means for determining the instantaneous volume change, and a means for determining the instantaneous pressure within the enclosure. The apparatus is operated within the enclosure to change the volume thereof, and at least one of the frequency and the displacement is adjusted to achieve a root mean square pressure in the enclosure approximately equal to a reference pressure. At that pressure, the leakage of the enclosure is determined from the instantaneous displacement and instantaneous pressure values. 3 figs.
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- PTO; EDB-94-123607
- Patent Number(s):
- US 4635469; A
- Application Number:
- PPN: US 6-747556
- OSTI ID:
- 7152500
- Resource Relation:
- Patent File Date: 21 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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