NASA NTRS · 19890009128
Wind tunnel pressurization and recovery system
Abstract
The high density, low toxicity characteristics of refrigerant-12 (dichlorofluoromethane) make it an ideal gas for wind tunnel testing. Present limitations on R-12 emissions, set to slow the rate of ozone deterioration, pose a difficult problem in recovery and handling of large quantities of R-12. This preliminary design is a possible solution to the problem of R-12 handling in wind tunnel testing. The design incorporates cold temperature condensation with secondary purification of the R-12/air mixture by adsorption. Also discussed is the use of Freon-22 as a suitable refrigerant for the 12 foot wind tunnel.
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Pejack, Edwin R., Meick, Joseph, Ahmad, Adnan, Lateh, Nordin, Sadeq, Omar. 1988-12-01. Wind tunnel pressurization and recovery system. https://ntrs.nasa.gov/citations/19890009128
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