Method for evaluating distribution of gaseous impurities from heat sources

Abstract

Relevance of the work is caused by the influence of heat sources on the environment mainly by harmful gaseous impurities which must be monitored. The main aim of the study is to build a reliable model of distribution of impurities in ground air and to obtain an evaluation methodology for calculating the concentrations of impurities. The methods used in the study: the geometric and dynamic similarity of physical model of jet propagation in cross flow and real scattering of volatiles to obtain the calculation formula of harmful gas concentrations at different distances from the emission source. The results: The authors have developed the physical model of distribution of harmful gaseous impurity extending from vertical thermal sources in a ground atmospheric layer. The empirical formula for calculating gas impurity concentration at different distances from low and average sources of emission was obtained. The paper introduces the values of the distances with maximum concentration for various heights of emission sources. The authors carried out the comparative analysis of peronal method and one of the official methods for calculating the concentration of harmful impurities for one of the heights.

Keywords

• model
• gaseous impurities
• jet
• height emissions
• concentration