The Uncertainties Of The Impact Of Indoor Air Pollution Gray System Analysis

People used to believe that indoor air quality was better than outdoor air quality. In fact, it is not always the truth. Because of bad ventilation and synthetic material, the concentrations of air contaminations indoors are even higher than that outdoors. The people who work and study in these rooms will feel sick. So it is important to study Indoor Air Quality as the air condition systems become popular in modern buildings.Because Grey System Theory is an efficient tool for problems which lack enough information or have uncertain condition, it is used in this research report to analyze the problem of Indoor air quality, a complex problem with many uncertain conditions.With the help of Grey Incidence Analysis, the indoor air contaminations which influence people most are found out with limited data. Then a Grey Non-intrinsic model for indoor air quality is proposed by combining Grey System Theory with the definitive physical model. And varying interval and Grey power function of Grey parameter in this model is also defined with experimental results of the author and many related references. In order to prove correctness and effectiveness of Grey non-intrinsic model for Indoor air quality analysis, two experimental and numerical simulation examples are presented. Finally, a summary for the research work is given, and the applicable fields and shortcomings for Grey Non-intrinsic model for Indoor air quality are presented.