Evaluation of the Repeatability of the Delta Q Duct Leakage Testing TechniqueIncluding Investigation of Robust Analysis Techniques and Estimates of Weather Induced Uncertainty Page: 4 of 58
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Figure 1. Envelope pressures during a DeltaQ test
o Small, OFF
+ Small, ON
o Big, OFF
E + Big, ON 750
o -70 -60 -50 -40 -30 -20 -1
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Envelope Pressure, Pa
Figure 2. Envelope pressures and Blower Door air flows from a DeltaQ test
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Dickerhoff, Darryl & Walker, Iain. Evaluation of the Repeatability of the Delta Q Duct Leakage Testing TechniqueIncluding Investigation of Robust Analysis Techniques and Estimates of Weather Induced Uncertainty, report, August 1, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc893638/m1/4/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.