基于灰色系统理论的空调系统对室内空气品质的影响研究

In recent 20 years, indoor air quality has became a research focus in the field of building environment due to people's demand on living standard and environment. Indeterminacy exists in the influencing factors and indoor air quality itself. Based on grey system theory, we analyze the system's inherent characteristics and rules by information drawed from the grey system, which generally we are short of adequate information to describe.In this paper, we analyze the influence of indoor air contaminations on inhabitants' subject evaluation to indoor air, and calculate the degree of grey incidence between indoor contamination level and dissatisfaction rate at indoor air or ill symptom rate. This study reveals the relationship between this factors, and shows which we should pay more attention to in design and maintenance of indoor environment. In order to give expression to the indeterminacy, we introduce grey structure, grey parameter and grey variable into the determinate indoor air quality models. The grey models are important tools to forecast and control indoor contamination level, because they not only make best of the existing knowledge, but also correctly take the grey characteristics into consideration. Furthermore, this paper establishes a grey method of assessing indoor air quality based on the abundant information provided by grey incidence matrix and illuminates the application of grey cluster in predigesting the evaluation parameters..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.Develops an irregular grid finite volume method for computing indoor air distrbution,adopting a two equation model to describe turbulence with wall function modification near the solid boundaries. Comptutes with the general progamme whereby prepared the airflow field in a theatre, proving the practicabillty of the method. .

本课题应用灰色系统理论，研究通风空调系统对室内空气品质的影响。通过理论分析和实验研究，建立通风空调系统对室内空气品质的影响的灰色模型及其基本计算与分析方法，为现代建筑室内空气环境的预测和优化设计提出新的理论和方法，对我国建筑的节能及防止出现病态建筑综合症等具有实际的重要意义。