Izmenenie gazovogo sostava atmosfery germetichno zamknutogo obitaemogo ob\"ekta pri ego prodolzhitel'noy nepreryvnoy rabote v protsesse udaleniya dioksida ugleroda

The systems providing gas composition (SGC) are designed to fulfill different tasks onboard of spacecrafts. The most important of them are:  purification of inhabited modules from carbon dioxide and microimpurities;  control of the atmosphere composition of inhabited modules by oxygen, carbon dioxide and water vapors partial pressures. The paper examines the problems of SGC use with regenerable absorbers of carbon dioxide onboard of a spacecraft. Absorbed carbon dioxide and microimpuriries are removed during vacuum or thermo vacuum regeneration of absorber (sorbate) in the SGC systems of this type. A standard scheme and a principal of operation of the system of atmosphere purification of a sealed inhabited module from carbon dioxide, water vapors and microimpurities are given. The changes of pressure and molar fractions of the atmosphere components in a sealed object during a continuous longterm operation of the system that purifies the atmosphere from carbon dioxide exhaled by the personnel were examined. A possible increase of an oxygen molar fraction in the atmosphere of the module due to noncompensated losses of neutral gas during carbon dioxide absorber regeneration was shown.

адсорбция, герметично замкнутый обитаемый объект, диоксид углерода, микропримеси, вакуумная / термовакуумная регенерация сорбента, система обеспечения газового состава (СГС), кратность обмена