Numerical simulation of indoor gas chemical reaction under multiple ventilation patterns

Abstract

As chemical reaction can significantly alter concentrations of indoor pollutants and reaction products often are more irritating than their precursors, indoor gas chemical reaction is one significant factor affecting air quality and occupants' health and comfort. Meanwhile, reaction level and product quantity depend on reactants concentration and residence time, impacted by ventilation patterns. For air environment of office room, influence of different factors on indoor gas chemical reaction under four kinds of ventilation patterns were analyzed with CFD, including air exchange rate, supplied air velocity, and ozone concentration of supplied air. One kind of typical reaction between ozone and terpene, including d-limonene and alpha-terpinene, was chosen for analysis. Distribution characteristics of reactants and products concentration are given, and variations of their mean concentration in respiratory region with impacting factors are provided and compared. © Springer-Verlag Berlin Heidelberg 2014.