Characterizing Buildings for Airflow Models: What Should We Measure.

Price, P. N. ; Chang, S. C. ; Sohn, M. D.

Technical Information Center Oak Ridge Tennessee

关键词: Air flow;    Buildings;    Measurements;    Modeling;    Input parameter measures;   

RP-ID  :  DE2004831114

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Airflow models of buildings require dozens to hundreds of parameter values, depending on the complexity of the building and the level of fidelity desired for the model. Values for many of the parameters are usually subject to very large uncertainties (possibly an order of magnitude). Experiments can be used to calibrate or 'tune' the model: input parameters can be adjusted until predicted quantities match observations. However, experimental time and equipment are always limited and some parameters are hard to measure, so it is generally impractical to perform an exhaustive set of measurements. Consequently, large uncertainties in some parameters typically remain even after tuning the model. We propose a method to help determine which measurements will maximally reduce the uncertainties in those input parameters that have the greatest influence on behavior of interest to researchers. Implications for experimental design are discussed.