REGENERATIVE LIFE SUPPORT - INPUTS AND OUTPUTS


From: Space Station Freedom Design Parameters - NASA SSP 30362 (1990).

INPUTS - kg/person/day

Oxygen -- 0.83
Dry Food -- 0.62
Water in Food --1.15
Food Preparation Water -- 0.79
Drinking Water -- 1.61
Oral Hygiene Water -- 0.36
Hand and Face Wash Water -- 1.81
Shower Water -- 5.44
Clothes Wash Water -- 12.47 *
Dish Wash Water -- 5.44
Urinal/Comode Flush Water - 0.49
Total: 31.0 kg/person/day

OUTPUTS - kg/person/day

Carbon Dioxide -- 1.00
Water from Respiration and Perspiration -- 2.28
Urine -- 1.50
Urine Solids -- 0.06
Hygiene Water -- 7.18
Latent (Evaporated) Hygiene Water - 0.44
Clothes Wash Water -- 11.87 *
Latent (Evaporated) Clothes Wash Water -- 0.60*
Latent (Evaporated) Food Preparation Water -- 0.04
Dish Wash Water -- 5.41
Latent (Evaporated) Dish Wash Water -- 0.03
Feces Solids -- 0.03
Feces Water -- 0.09
Sweat Solids -- 0.02
Urinal and Commode Flush Water -- 0.49
Total: 31.0 kg/person/day

* No Clothes Washing Capability for International Space Station Alpha.


From: Wydeven, T., and Golub, M.A., Generation Rates and Chemical Compositions of Waste Streams in a Typical Crewed Space Habitat, NASA TM-102799, NASA Ames Research Center, Moffett Field, CA (1990).

OUTPUTS - kg/person/day

Carbon Dioxide -- 1.00
Water from Respiration and Perspiration -- 1.80-2.48
Urine -- 1.21-2.05
Urine Solids -- 0.059
Hygiene Water -- 5.4-5.5
Clothes Wash Water -- 12.5
Dish Wash Water -- 5.4
Feces Solids -- 0.0205-0.03
Feces Water -- 0.075-0.111
Sweat Solids -- 0.016-0.02
Urinal and Commode Flush Water -- 0.494


From: Webb, P., Ed., Bioastronautics Data Book, NASA SP-3006, National Aeronautics and Space Administration, Washington, D.C. (1964).

OUTPUTS - Flatus

Generation Rate = 0.1-2.8 kg/person/day

Chemical Composition (%)

Carbon Dioxide -- 9.0-9.7
Oxygen -- 3.5-3.9
Methane -- 3.1-7.2
Hydrogen -- 12.0-20.9
Nitrogen -- 59.0-70.0
Hydrogen Sulfide -- 0.0002-0.0003


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Copyright © 1996, James E. Atwater