ANALYSIS OF MATHEMATICAL MODELS OF BOILERS AS CONTROL SYSTEM

The urgency of the problem of increasing the efficiency of the heat sources is a top priority in the development of new heat-generating devices and modernization of existing ones. Consideration of all processes occurring in the boiler will be carried out with the device for the synthesis of more efficient control. Studying the contemporary works on boiler control, we should note that due to the complexity of the processes occurring in the boiler. Many works are devoted to individual paths, constituting the boiler as a whole. The subsystems of the boiler are considered independently by modern developers. For instance, A.V. Gil conducted researches on combustion processes. A.E. Medvedev wrote papers on forced-draft plants. A.A. Ponamorenko, V.F. Lozhechnik and a group of other scientists examined the gas-air path of the thermal power boiler. D.L. Piotrowski, N.A. Akilova and D.A. Telichenko considered the vapor-air path. Mathematical models proposed by the above-mentioned authors are independent description of a particular process in the boiler, stating that other dynamic multivariable processes and systems can generally be neglected. An analysis of the literature and practical problems of boiler control led to the conclusion about the necessity of constructing a mathematical model that takes into account the interdependence of all the control processes of the object as a whole. This article provides an overview of existing mathematical models, giving the idea of a separate part of the boiler unit. The author tried to group mathematical models to paths that comprise the boiler unit. First, the mathematical model of the combustion process is given. Then the model of gas-air path and the water path is presented.