DUCT INTEGRITY TESTING
DUCT INTEGRITY TESTING
(OP)
Are you aware of any testing that is completed to ensure zero/minimal air loss in duct work? Is this standard practise or a requirement? Thanks for your help.
Thanks
Thanks
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RE: DUCT INTEGRITY TESTING
To find every last microscopic leak humanly possible, we've injected sulfur hexafluoride (SF6) into a Powercat blower that discharges into the tested portion of duct. We scan the duct top-to-bottom, all surfaces, with an ITI/Qualitek Leakmeter 200 to find any leakage. Tin knocker follows us with a bucket of duct sealant (that gray gooey stuff) and seals until the Leakmeter smells no more SF6. Is this a standard? This is much better than the "standard" standard's I've seen from SMACNA, ASHRAE, etc... It's ridiculous to go to this level for normal applications. This is for Biosafety Level 3+ type installation.
RE: DUCT INTEGRITY TESTING
Still I was able to reduce the humidity by 20 grains.
Here is a paper from SMACNA on duct leakage.
http://www.smacna.org/products/publications/download.cfm?download_file=ductleakage%2Epdf
Just check this case study.
http://www.fsec.ucf.edu/bldg/pubs/fl_home_impacts/
Regards,