Analysis of methods for selection of optimal parameters of stack

Abstract

The most significant technical solutions should be optimized using a technical and economic analysis, which reduces the cost of their implementation. Due to the fact that the diameter and height of the chimney depends on the gas velocity in the chimney, this parameter is decisive when carrying out a feasibility study. However, the existing methods and regulations in the Russian Federation concerning the construction and design of chimneys do not take into account all the necessary characteristics and parameters, for example, the economic component of determining the optimal gas velocity. PURPOSE of this article is to review foreign sources, in which consider similar issues and problems to take into account foreign experience in the development of a new methodology. METHODOLOGY. For the review, regulatory documents and scientific papers published in the most technically advanced countries were selected. RESULTS. In the course of analyzing the methodology for modeling the dispersion of impurities and calculating the height of the stack, it was concluded that, despite the large number of calculation models, the most accurate models are dispersion in air, based on meteorological data specific to a particular region. However, none of the considered methods for choosing the main dimensions of the stack is based on determining the optimal gas outlet rate based on the technical and economic analysis. The choice of the gas outlet rate is of a recommendatory nature and is mainly associated with the conditions for the formation of the initial section of the smoke plume and is not associated with the cost of the stack. The technique being developed in Russia makes it possible to take into account a wider range of chimney operating conditions, incl. and for the transitional phase to Green Energy, when the composition of combustion products will change depending on the proportion of hydrogen in the boiler fuel.