Life Sciences Space Science in the Twenty-First Century -- Imperatives for the Decades 1995 to 2015 (1988) / Chapter Skim
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4. Controlled Ecological Life Support System (CELSS)
4. Controlled Ecological Life Support System (CELSS)
Pages 69-71
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From page 69... ...
For long ventures in space, the resupply of life-sustaining materials from Earth is impractical, both technologically and in terms of cost. Extended Space Station missions, or longer term manned expeditions to the Moon or to Mars and beyond, will remain improbable until systems capable of regenerating life-sustaining materiab (air, water, and food)
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From page 70... ...
The engineering requirements include a plant growth chamber with appropriate light, humidity, and temperature controls; a dehumidifier to control excess moisture produced in the growth chamber by plant transpiration; a water purifier, to remove accumulations of toxic compounds; a food processing system to convert raw materials into edible material and convert, where possible, inedible matter into nutritionally usable matter; a waste processing system to recycle (chern~cally or biologically) human, plant, and animal waste into reusable materials; and an air purifier to remove toxic molecules from the atmosphere.
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From page 71... ...
ACCOMPLISHMENTS Previous studies have indicated the approximate size, volume, and power requirements to accomplish water recycling, atmosphere regeneration, waste recycling, and plant growth sufficient to feed four to six humans on a space trip of several years' duration. This ranges from a minimum of 150 cubic feet to well over 200 cubic feet—the better part of a space station module.
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