NASA NTRS · 19910000355
Closed-Cycle Nutrient Supply For Hydroponics
Abstract
Hydroponic 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.
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Schwartzkopf, Steven H.. 1991-07-01. Closed-Cycle Nutrient Supply For Hydroponics. https://ntrs.nasa.gov/citations/19910000355
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