Investigation of the parameters influence of the oxy-fuel burner and the test bench parameters on the deviation of the model similarity criterions from the full-scale values

Abstract

The article presents the results of a study of the workflow parameters influence in the full-scale and model burners of the combustion chamber oxy-fuel combined cycle on the deviation of similarity criteria from full-scale values. The variable parameters are the pressure and velocity of the fluid under model conditions, as well as the power of model and full-scale burners. The supercritical parameters of the working fluid in the cylindrical sections of the combustion zone at a pressure of 30 MPa and a temperature of 1570 ℃ were taken as full-scale conditions. In this paper, the dependences of the deviations of hydrodynamic and thermophysical similarity criteria on the speed and pressure of the combustion products of an oxygen-fuel mixture with carbon dioxide in the working zone of the test bench for burners are obtained. The parameters of the working fluid and the power of model burners are obtained, at which the values of the criteria deviations are minimal.