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Title: Methods and apparatus for measuring the tightness of enclosures

Abstract

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.

Inventors:
 [1];  [2]
  1. 3815 Brighton Ave., Oakland, CA 94602
  2. 461 Hudson St., Oakland, CA 94618
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
866107
Patent Number(s):
4635469
Assignee:
Modera, Mark P. (3815 Brighton Ave., Oakland, CA 94602);Sherman, Max H. (461 Hudson St., Oakland, CA 94618)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
methods; apparatus; measuring; tightness; enclosures; disclosed; enclosure; building; utilizing; alternating; pressurization; techniques; method; comprises; providing; capable; causing; internal; volume; change; including; means; determining; instantaneous; pressure; operated; frequency; displacement; adjusted; achieve; root; mean; square; approximately; equal; reference; leakage; determined; values; internal volume; comprises providing; approximately equal; method comprises; apparatus including; apparatus capable; pressure value; method comprise; root mean; mean square; pressure values; utilizing alternating; /73/

Citation Formats

Modera, Mark P, and Sherman, Max H. Methods and apparatus for measuring the tightness of enclosures. United States: N. p., 1987. Web.
Modera, Mark P, & Sherman, Max H. Methods and apparatus for measuring the tightness of enclosures. United States.
Modera, Mark P, and Sherman, Max H. Tue . "Methods and apparatus for measuring the tightness of enclosures". United States. https://www.osti.gov/servlets/purl/866107.
@article{osti_866107,
title = {Methods and apparatus for measuring the tightness of enclosures},
author = {Modera, Mark P and Sherman, Max H},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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