Research of Inversion of Isotopic Effect of Phase Diagrams in Lani<sub>5</sub>−H<sub>2</sub>(D<sub>2</sub>) Metal Hydride Sorption System by Mathematical Modelling as an Aspect of Technogenic and Ecological Safety Application of Hydrogen Isotopes as Motor Fuel

Source abstract

Purpose of the study is to improve the mathematical determination of thermodynamic characteristics of mixture of the two most common hydrogen isotopes – protium H and deuterium D without significant impurities of tritium T – as sorption metal hydride technologies product and in stages of accumulation, storing and transportation in the life cycle of such alternative ecology safety, but technogenic, fire and explosive dangerous alternative renewable type of motor fuel for reciprocation internal combustion engines of power plants and firefighting and emergency rescue equipment and vehicles, namely α-β-phases equilibria and inversion of isotopic effect, based on the results of mathematical modeling analysis using improved mathematical apparatus based on Modified Thermodynamic Perturbation Theory. Object of the study is thermodynamic characteristics of mixture of the two most common hydrogen isotopes as sorption metal hydride technologies product and alternative renewable type of motor fuel for such power plants. Subject of the study is mathematical description and magnitudes of the thermodynamic characteristics of object of the study, namely α-β-phases equilibria and inversion of isotopic effect Methods of the study are literature analysis, modified thermodynamic perturbation theory, mathematical modeling. Scientific novelty of results of the study is that apparatus of the Modified Thermodynamic Perturbation Theory for mathematically describing the thermodynamic characteristics of mixture of the hydrogen isotopes as sorption metal hydride technologies product and alternative renewable type of motor fuel has further been developed and numerical values of the α-β-phases equilibria conditions and inversion of isotopic effect have been obtained. Practical value of results of the study is the improved mathematical apparatus and the results of its application which are suitable for developing a list of recommendations and organizational and technical measures for workflow improvement of such power plants with using hydrogen isotopes as sorption metal hydride technologies product and alternative renewable type of motor fuel both during the times of armed aggression and during the post-war reconstruction of critical infrastructure and economic potential of our country. By a computational method via an improved mathematical apparatus of the Modified Thermodynamic Perturbation Theory, numerical values of the thermodynamic characteristics of mixture of the main hydrogen isotopes – protium H and deuterium D without significant impurities of tritium T, disintegration curves of homogeneous phases (ST-diagrams) of LaNi 5 – Н 2 (D 2 ) systems into disordered α-β-phases have been obtained. The lists of organizational and technical measures and recommendations have been developed for the implementation of this type of environment protection technology in the practice of the units of the SES of Ukraine, in particular in stages of accumulation, storing and transportation in the life cycle of this sorption metal hydride technologies product for exploiting the units of firefighting and emergency rescue equipment and vehicles with reciprocating internal combustion engines, both during the martial law period and during the post-war reconstruction of critical infrastructure and the economic potential of Ukraine.