This paper considers the task of ensuring the energy and environmental security of regions under the conditions of shortage of traditional energy resources. The method of expert assessments has been applied to justify the choice of types of acceptable energy resources that provide an increase in the relative energy supply of the territories of the regions. A list of factors from 6 groups has been devised and compiled that includes 27 indicators characterizing the technological, environmental, and other consumer characteristics of energy resources available for use. The maximum and minimum values of the indicator scores, the permissible intervals for their change, and the weighting coefficients that assess the importance of the indicator in the list have been determined. The method of expert assessments is supplemented by a random number generator for the formation of an information field on the values of the characteristics of energy resources and statistical processing of data on acceptable energy resources under the conditions of the considered regions. A quantitative comparative analysis of available energy resources and technologies based on them was carried out. It is proposed to use the acceptability index and the environmental conservation index as a criterion for the preference of a resource. Index values equal to or greater than 1 indicate resource preference. It is shown that for the base region under consideration, such resources are nuclear, solar, wind, and hydropower. The method of expert assessments makes it possible to get an objective idea of the acceptability of using a certain energy resource to ensure energy security, taking into consideration its environmental impact in a particular region of the country. A quantitative comparative analysis of the state of the existing structure of energy resources in the region and their availability has been carried out. To conduct a comparative analysis of acceptability by indicators and types of resources, a graphical and analytical methodology was used. The reliability of the results obtained was assessed using a concordance coefficient. The results could be useful for devising projects for the development and ensuring the energy security of the regions in the context of reforms
The possibility of a comprehensive assessment of the efficiency of the operation of a district heating system based on the indicator of the overall efficiency of the equipment OEE (overall equipment efficiency) and its extension to the system as a whole is considered. The disunity of the direction of existing approaches in assessing the efficiency of operation of district heating systems does not allow a comprehensive assessment of the overall efficiency of the functioning of the technological sequence of the entire system. It is proposed to consider efficiency as the probability of full functioning of all elements of the heat supply system. It is shown that the heat output of the boiler house is proportional to the power consumption of the boiler house and is approximated by a periodic function. It is shown that the main element of the heat supply system, which determines its efficiency, is the heat-generating source. As a result of the study, it is determined that the efficiency of the heat-generating source functioning increases as the maximum value of its efficiency is reached. Numerical modeling has shown that the flexible use of the installed heat generator capacity contributes to an increase in the efficiency factor from 0.53 to 0.70 and the overall efficiency of the heat supply system can be increased by more than 30 %. When designing a boiler house, it was recommended to provide for the installation of capacities with gradation 1; 0.5; 0.25. It is shown that the OEE indicator allows one to characterize the efficiency of both the heat supply system as a whole and its individual components, and can be used in the design and analysis of the operation of systems
в системі регенерації і очищення борного концентрату. Ви-конано аналіз ефективності технологічного ланцюжка типової установки СВО-6. Виявлено характерні недоліки, властиві комбіно-ваним системам «випарювання-іонообмінне фільтрування», обумовлені властивостями борної кислоти і витісненням хлоридів аміаком з швидким виснаженням аніонітних фільтрів. Показана можливість заміни існуючої схеми високотехнологічною баромем-бранною технологією на базі сучасних бороселективних мембран.Ключові слова: спецводоочистки, бор, борна кислота, мембраниModern technologies in the system of regeneration and purification of boron concentrate. The analysis of the efficiency of the technological chain of a typical installation (device) SVO-6 is performed. Characteristic drawbacks, inherent in combined "evaporation-ion-exchange filtration" systems conditional to the properties of boric acid and the displacement of ammonia by ammonia with rapid depletion of anionite filters, are revealed. The possibility of replacing the existing scheme with high-tech baromembrane technology based on modern boroselective membranes is shown.
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