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Cross section of barn 2 demonstrating the distribution of fresh air and composition of the perforated polyurethane cassettes used for supply air filtration in barn 2.

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posted on 2018-03-20, 17:36 authored by Cindy Wenke, Janina Pospiech, Tobias Reutter, Bettina Altmann, Uwe Truyen, Stephanie Speck

(3.) Each filter unit consisted of a polyurethane cassette and two glass wool filters. These units (indicated in yellow) were installed into the barn attic without gaps. Fresh air entered the attic via slots underneath the roof (dark blue arrows). Air flow (indicated as multicolored arrows) was regulated by negative pressure. (3.a) Each air filter unit in the attic of barn 2 was composed of two glass wool filter mats (A, B) embedded in a perforated polyurethane cassette (C). Each mat sized 1,200 mm x 1,200 mm and had a thickness of 40 mm. The direction of airflow through each cassette is indicated by a blue arrow.

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