Suk I. Scientific motivation and improvement normative parameter energy-save state of working steam boilers during combustion of low-quality fuel

The object of the study is the processes of providing energy-efficient modes of operation of boiler plants of electric stations when burning low-grade fuels. The purpose of the research is to develop and improve scientific methods and technical solutions aimed at determining the normative values of the parameters of energy-efficient modes of operation of boiler units, including the combustion of low-grade fuels. Scientific novelty: Further development of the methods of mathematical modeling and analysis of the characteristics and operating modes of boiler installations of power plants was obtained: new analytical dependencies between the main operating parameters of the boiler were obtained, which allowed to optimize the modes of their operation; For the first time, the normative values of the operational parameters of boiler units operation at combustion of low-grade fuel were determined by solving the task of optimizing the operating modes of boiler installations of power plants on the criterion of minimum energy losses taking into account the characteristics of the boiler and technological constraints; For the first time, the universal dependence of energy losses on the main operating parameters of boiler plants during the combustion of low-grade fuels has been obtained, which allowed to normalize the boiler-type parameters on the criterion of maximum energy efficiency; For the first time, unified technical solutions and corresponding normative provision (technical conditions) have been developed for a significant reduction of energy losses in boiler units of power plants by implementing structural and parametric synthesis of adaptive automatic control systems for boiler units that provide minimal energy losses during burning low-grade fuel. Methods of research: Theoretical methods are based on the modern principles of the theory of hydro-gas dynamics, thermodynamics and heat transfer, the theory of automatic control and system analysis and methods of parametric standardization; Experimental researches are based on the use of modern methods of experiment planning, methods of measuring hydraulic and electrical quantities, statistical processing of data and engineering methods for constructing empirical dependencies