A Trade Study on Sabatier CO2 Reduction Subsystem for Advanced Missions

An analysis on O₂ usage, water contents in food, CO₂ and H₂ availability, water generation capability of CO₂ reduction subsystems, water balance, etc. was conducted to evaluate the feasibility of integrating a CO₂ reduction subsystem into an air revitalization system.

The effects of CO₂ reduction subsystem operating parameters on water recovery efficiencies and water generation capabilities were analyzed. Water mass balances for advanced missions were conducted for advanced missions. Equivalent system mass method was used to calculate payoff time for integrating the CO₂ reduction subsystem into an air revitalization system. Decision criteria based on payoff time for integrating a CRS for advanced missions were developed.