Evaluation of the resource usage efficiency increase of the fixed oxygen breathing apparatus

Abstract

The research shows that the СО2 critical breakthrough time when using a heterogeneously fitted regenerative cartridge connected via the open scheme provides an understated breathing apparatus protection increase evaluation. It is better to employ the average oxygen-containing product usage along the full length of the cartridge by the time of the СО2 critical breakthrough, because the breakthrough decrease due to the dependence of the product granules diameter on the granules occurrence depth evolves in time by itself. It is shown that the suggested evaluation in terms of quantity equals the one determined by the protection term for the circular airway scheme where the СО2 breakthrough returns during breath.