Numerical Investigation of Carbon Dioxide Diffusion in Indoor Hypobaric Atmosphere

摘要

The hypo baric atmosphere at high altitude has very negative effects on human''s physiology and health. In the present paper, by considering human''s respiration capacity and component, the RNG k-ε turbulent model was developed to study the heat transfer and CO₂ diffusion of indoor air in the hypo baric atmosphere. The results show that as the pressure decreases, the CO₂ diffusion tends to be weak, leading to an increasing CO₂ concentration. But raising the supplied air flow speed helps to improve the CO₂ diffusion and hence indoor air quality.