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Closed-Cycle Nutrient Supply For HydroponicsHydroponic system controls composition and feed rate of nutrient solution and recovers and recycles excess solution. Uses air pressure on bladders to transfer aqueous nutrient solution. Measures and adjusts composition of solution before it goes to hydroponic chamber. Eventually returns excess solution to one of tanks. Designed to operate in microgravity, also adaptable to hydroponic plant-growing systems on Earth.
Document ID
19910000355
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Schwartzkopf, Steven H.
(Lockheed Missiles and Space Co.)
Date Acquired
August 14, 2013
Publication Date
July 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 7
ISSN: 0145-319X
Subject Category
Life Sciences
Report/Patent Number
MSC-21655
Accession Number
91B10355
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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