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Detection of Airstream Fibers in Fibrous Glass Duct Board Systems
Author(s) -
Hays Peter F.
Publication year - 1991
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1111/j.1600-0668.1991.00016.x
Subject(s) - duct (anatomy) , protocol (science) , glass fiber , environmental science , sample (material) , materials science , process engineering , computer science , composite material , engineering , surgery , chemistry , medicine , chromatography , alternative medicine , pathology
Previous studies to detect fibers emitted by fibrous glass air duct systems have indicated very low concentrations, on the order of 1 × 10 −6 to 10 × 10 −6 fibers per cubic centimeter. These levels are equivalent to background air. The test protocol and sample evaluation for these studies are expensive and labor‐intensive. A new test protocol has been developed that utilizes lower‐cost equipment and reduces sample construction and evaluation costs. This new procedure uses multiple tests to increase precision and establish confidence levels for the mean performance of the product. Easily fabricated test sections and statistically sampled collection filters are the primary methods used to reduce costs and shorten total testing time. Results to date agree well with previous studies and demonstrate that fibrous glass duct board does not contribute fibers to the atmosphere. This new protocol is used on a continuing basis to evaluate products and to ensure that there are no changes that affect airstream quality.