Experimental Study on Oxygen Supply Performance Influence Factors of Potassium Superoxide Oxygen Board Used in Confined Space

Abstract

Oxygen supply is the primary factor in ensuring human survival in confined spaces. Compared with high pressure oxygen bottles, potassium superoxide oxygen board has advantages such as small size, large oxygen storage per unit volume, absorbing carbon dioxide while providing oxygen. However, the release rate of chemical oxygen in a confined space relates to the concentration of carbon dioxide, temperature, humidity and other environmental parameters. To meet human survival needs within the refuge chamber, this paper made experiments on potassium superoxide oxygen production performance factors, including humidity test, carbon dioxide concentrations test, surface spray wet test and so on. Through tests the amount and the rate of oxygen production, and the removal efficiency of carbon dioxide of potassium superoxide in different situations are obtained. And through a human survival experiment, the potassium superoxide oxygen board can satisfy the human body needs is validated. These all provide basis for the establishment of auxiliary oxygen supply facility in the refuge chamber.

Research on Oxygen Supply System of Coal Mine Refuge Chamber Based on Personnel location and Programmable Logic Controller

“…Zhang [28] et al, experimentally determined a ventilation rate of 0.1 m 3 /min per person in a 50-person refuge. Li [29] et al, studied the oxygen supply system using potassium superoxide as a raw material. But the refuge chamber only guarantees people can stay for 96 h safely [30].…”

Preparation and Characterization of Potassium Superoxide Particles as Chemical Air Revitalization Component

“…There are several methods to manufacture of KO 2 compounds. The most widely used ones are the interaction of hydrogen peroxide with potassium hydroxide in an aqueous or aqueous-organic solution, and dehydration of the resulting solutions or suspensions to give a solid phase under drum drying, spray drying, and electrohydrodynamic (EHD) processes [1,[6][7][8][9][10][11][12][13][14]. The quality of the final product is strongly depending on the dehydration step of the selected wet synthesis method.…”

A method for determination of mass-exchange and capacitive characteristics of absorbers for life support systems

“…It is noteworthy that parameter identification was carried out on the basis of rather complex mathematical models, containing a system of equations in partial derivatives using numerical calculation methods, which required the creation of special software [6][7][8][9][10].…”