Paper Conference

Proceedings of Building Simulation 2011: 12th Conference of IBPSA


Numerical study on the carbon dioxide distribution in a naturally ventilated space

Andre Isele, Gerrit Hoefker, Malcolm Cook

Abstract: Carbon dioxide concentration is often taken as an indicator of indoor air quality, especially in spaces where human beings are the main contaminant source. Therefore this CFD analysis focuses on the CO₂ distribution in a sports hall, representing large and high enclosures. A buoyancy driven natural ventilation system prevails in the absence of wind, so that a pollutant stratification can be expected corresponding to displacement ventilation. The results of a parametric study reveal that the most influencing factors on the vertical carbon dioxide concentration profiles in the space, in addition to the ventilation flow rate, are the thermal properties of the surrounding surfaces.
Pages: 1855 - 1862