Modelling of Circulating Fluidised Bed Combustion Systems

摘要

This report is divided into three sections each dealing with a specific aspect of the modelling of circulating bed combustion systems. In section I the literature concerning circulating bed combustion is reviewed and the conclusion is reached that our knowledge of fluid mechanic and heat transfer processes is insufficient at this time to permit more than empirical modelling. Based upon this conclusion sections II and III and IV of the study were performed. Sections II involved development of a simple model to estimate radiative heat transfer and comparison of this model with available experimental data. Finally section II involved development and testing of a small needle capacitance probe. Initial result with this probe give some insight into the boundary layer structure. We hope that with further work it will be possible to develop more comprehensive models of the bed fluid mechanics. These should aid in estimation of pollutant formation, heat transfer, and density profiles. (ERA citation 12:048157)