Air Revitalization

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ISS Consumables Budget Consumable Design Load (kg/person-day) Oxygen 0.85 Water (drinking) 1.6 Water (in food) 1.15 Water (clothes and dishes) 17.9 Water (sanitary) 7.3 Water (food prep) 0.75 Food solids 0.62 U N I V E R S I T Y O F MARYLAND 2 Air Revitalization ENAE 697 -Space Human Factors and Life Support
Nitrogen Makeup • Nitrogen lost to airlock purges, leakage (can be >1%/day) • Need to replenish N 2 to maintain total atmospheric pressure • Choices: – High pressure (4500 psi) N 2 gas bottles – Cryogenic liquid nitrogen – Storable nitrogen-bearing compounds (NH 3 , N 2 O, N 2 H 4 ) U N I V E R S I T Y O F MARYLAND 3 Air Revitalization ENAE 697 -Space Human Factors and Life Support
Page 1: Air Revitalization • Fundamentals
Page 5 and 6: Air Component Storage • Cryogenic
Page 7 and 8: High Pressure Gas Tanks • Typical
Page 9 and 10: 4BMS Schematic from Wieland, “Des
Page 11 and 12: CO 2 Regenerable Scrubbing Systems
Page 13 and 14: CO 2 Regenerable Scrubbing Systems
Page 15 and 16: SAWD Schematic from Wieland, “Des
Page 17 and 18: LiOH Schematic U N I V E R S I T Y
Page 19 and 20: METOX (Metal Oxide Adsorption) •
Page 21 and 22: CO2 Reduction Options • Bosch rea
Page 23 and 24: Bosch Reactor Schematic from Wielan
Page 25 and 26: ACRS Schematic from Wieland, “Des
Page 27 and 28: CO2EL/BD Schematic from Wieland,
Page 29 and 30: SFWE Schematic from Wieland, “Des
Page 31 and 32: SPE Schematic from Wieland, “Desi
Page 33 and 34: Superoxides and Ozonides • O2 gen
Page 35 and 36: Trace Contaminant Control Schematic
Page 37 and 38: O2 Recovery System Trade System Mas
Page 39: References • Peter Eckart, Spacef

Air Revitalization

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