NASA NTRS · 19720000489
Automatic air flow control in air conditioning ducts
Abstract
Device is designed which automatically selects air flow coming from either of two directions and which can be adjusted to desired air volume on either side. Device uses one movable and two fixed scoops which control air flow and air volume.
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Obler, H. D.. 1972-08-01. Automatic air flow control in air conditioning ducts. https://ntrs.nasa.gov/citations/19720000489
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