Modeling of the air regeneration in closed cabin

A mathematical model of the life support system designed to maintain the specified concentrations of carbon dioxide and oxygen in an isolated volume is obtained. The functioning of the system is based on the reactions of carbon dioxide absorption and release of oxygen by chemisorbents on the base of alkali metal superoxides. The suggested algorithm of system operation ensures the least fluctuations in the concentrations of controlled gas components. The model is applied for selecting the period of regenerative cartridges replacement and study the stability of the system functioning. The possibility of the applying of the analytical solutions of the combined differential equations of the mass transfer in the regenerative and absorption cartridges is examined.