Improving the Environmental Efficiency of Engineering Systems Operating under the Scheme of Secondary Use of Thermal Energy

Abstract

Refrigerating machines are used in many areas to produce artificial cold. In the course of its operation, each refrigeration unit generates a lot of heat by compressing the refrigerant, which is not used in any way in the future, and during condensation is released into the environment in the form of water vapor. The use of chlorine-containing refrigerants destroys the ozone layer. To reduce environmental damage, a water reuse system was created and a technology for using low-temperature heat that is released during the operation of the refrigeration machine was developed. This paper offers various design solutions aimed at the comprehensive modernization of the cooling system of the ice palace "Puck" in Sochi to reduce its impact on the environment. In the course of the research, a refrigeration unit was developed allowing utilization, accumulation, and channeling of condensation heat for the secondary use of thermal energy by other engineering systems at the facility, thereby reducing emissions of harmful substances into the Earth's atmosphere and increasing the technological capabilities of cooling. Methods that allow making the necessary calculations and selecting equipment for the implementation of the developed systems on ice arenas are also proposed.

Development of competence in the sphere of information security to achieve sustainable development

“…The problem of information protection is of interest to scholars of various branches of science: programming, computer networks, and information protection (Sedova et al, 2023;Neverov et al, 2022), law (Pauzin et al, 2022), information security management . Thus, we note that this problem is mainly dealt with by specialists in the field of physical and mathematical (Tolmachev et al, 2022) and technical (Logachev et al, 2022) sciences, whose research is intended for official use, since it contains technical developments of information security systems.…”

Influence of Coal Mining Activities on Soil's Agrochemical and Biochemical Properties

“…The Earth's population by some estimates is bound to increase by 2.3 billion people in the period from 2009 to 2050, which will require a significant expansion of global food production to meet future food demand (Almanova et al, 2016). The significant increase in atmospheric carbon dioxide levels, primarily caused by various human activities such as the burning of fossil fuels and deforestation, stands as the primary catalyst for the present-day climate change (Kweku et al, 2018;Neverov et al, 2022). Current projections indicate that global temperatures will rise by approximately 1.4-3.1°C once atmospheric CO2 concentrations reach around 670 µmol/mol.…”

“…Considering that CO2 is the main substrate for photosynthesis, it can be regarded as the primary driver of global food production (Kimball, 2016). Nearly 90% of plant species are C3 types, not yet photosynthetically saturated under current CO2 levels, suggesting potential increases in photosynthesis and biomass with rising CO2 concentrations (Mikhaylov et al, 2020;Nasiyev, 2013;Nasiyev et al, 2022aNasiyev et al, , 2022bNeverov et al, 2022). In these plants, photosynthesis involves ribulose-1,5-bisphosphate carboxylase/oxygenase, which reacts with both CO2 and O2, influencing the efficiency of carbon reduction and oxidation cycles (Chehabeddine & Tvaronavičienė, 2020).…”