DEVELOPMENT AND GENERALIZATION OF THE METHOD FOR CALCULATING THERMODYNAMIC PROPERTIES AND PHASE EQUILIBRIUM IN HYDROCARBON MIXTURES AS FUELS FOR RECIPROCATING ICE WITH THE PURPOSE OF THEIR ECOLOGIZATION

Keywords: thermophysical properties, traditional motor fuels, alternative motor fuels, mathematical model, environmental protection technologies, ecological safety, power plants, reciprocating internal combustion engines

Abstract

In the article, which shows the results of the authors' own research, the purpose of which was the development of a mathematical apparatus built on the basis of a modified perturbation theory, and its application to describe the thermophysical characteristics of alternative motor fuels of arbitrary aggregate state, which are characterized by a spherical configuration of interacting structural elements , the following tasks regarding the improvement of the mathematical apparatus developed earlier, presented in the open press and tested at a number of scientific and technical conferences of the international level were consistently solved, namely: the analysis and development of the modified disturbance theory scheme for multi-component alternative fuels has been performed; analytical expressions for the parameters of heterogeneous interaction potentials have been obtained; construction of a complex of thermodynamic values of mixtures and working expressions of its mathematical description has been completed; construction and analysis of phase diagrams of binary mixtures of components of hydrocarbon systems have been performed; the construction and description of the system of equations for phase equilibria have been completed; the analysis and description of the results of the calculation study of the thermodynamic characteristics of alternative types of motor fuel have been carried out. The object of research is the thermophysical properties of alternative motor fuels in a liquid or gaseous aggregate state with a spherical configuration of interacting structural elements. The subject of the research is a mathematical apparatus based on a modified perturbation theory for describing the thermophysical characteristics of motor fuels in a liquid or gaseous aggregate state with a spherical configuration of interacting structural elements. The scientific novelty of the research results is that the approach to the construction of a mathematical apparatus based on the modified perturbation theory for a comprehensive description of all thermophysical properties of alternative and traditional motor fuels, which are in an arbitrary aggregate state, has been further developed, which made it possible to reduce determination errors and reduce calculation time thermophysical properties compared to experimental or reference data. The practical significance of the research results is that the mathematical apparatus transformed and supplemented in the research is marketable for providing accurate information to the list of initial data in research on the full life cycle of motor fuel of any genesis (ie traditional, alternative and mixed) – production, storage , transportation, distribution, use, which at the same time is in both a liquid and a gaseous aggregate state, as well as for forecasting the course and consequences of atmospheric pollution processes with gaseous products of complete and incomplete combustion of fuel components in the combustion chambers of various types of heat engines.

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