Вісники НТУ "ХПІ"

Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2494


З 1961 р. у ХПІ видається збірник наукових праць "Вісник Харківського політехнічного інституту".
Згідно до наказу ректора № 158-1 від 07.05.2001 року "Про упорядкування видання вісника НТУ "ХПІ", збірник був перейменований у Вісник Національного Технічного Університету "ХПІ".
Вісник Національного технічного університету "Харківський політехнічний інститут" включено до переліку спеціалізованих видань ВАК України і виходить по серіях, що відображають наукові напрямки діяльності вчених університету та потенційних здобувачів вчених ступенів та звань.
Зараз налічується 30 діючих тематичних редколегій. Вісник друкує статті як співробітників НТУ "ХПІ", так і статті авторів інших наукових закладів України та зарубіжжя, які представлені у даному розділі.

Переглянути

Фільтри

2017 - 20192

Налаштування

Автор: search.filters.author.Denysova, AllaКлючові слова: search.filters.subject.optimization

Результати пошуку

Зараз показуємо 1 - 2 з 2
  • Ескіз
    Документ
    Exergy analysis in modern investigaions (review)
    (НТУ "ХПІ", 2019) Nikulshin, Vladimir; Denysova, Alla; Melnik, Sergey; Bukhkalo, S. I.
    The advance of the exergy method is the universality associated with the usage of exergy allows for the estimation of stocks and flows of all types of energy included in the balance of any energy technology system using a common criterion of efficiency. For this reason exergy approach was used for systems investigation’s in different areas such as: traditional energy industry, renewable energy, refrigeration industry, chemical technology, food production and even in medicine. Review of last publication in all these areas showed that the application of the exergy analysis is very efficient due to the fact that the exergy approach allows thermodynamically objectively estimate all types of energy sources, regardless of the specific type of processes occurring in individual elements of the system as well as in the system as a whole. Exergy method due to it universality can be also a base for a high quality innovations and implementations in practice fields of new design and technological solutions as well as provide of complex competency development connected with the application to the educational process in different Universities world wide.
  • Ескіз
    Документ
    Advanced thermodynamic analysis on exergy flow grafs
    (NTU "KhPI", 2017) Nikulshin, Vladimir; Denysova, Alla; Denysova, Anastasiia
    In the paper has been proposed f general approach for thermodynamic analysis of systems with arbitrary structures. Method was based on construction and analysis of a new type of exergy- topological model – exergy flow graph and allowed to improve the efficiency of energy intensive systems. The efficiency improving is very important problem and the main way of it solving was through thermodynamic analysis and optimization. It was shown that the processes taking place in the complex energy intensive systems were characterized by mutual transformation of quality different power resources. It has been found that one of the most effective mathematical methods used for exergetic analysis and optimization was the method the method of graph theory. The benefit of graph models can also be demonstrated by its flexibility and vide varieties of possible applications. It has been demonstrated the application of suggested approach for thermodynamic analysis of gas-turbine installation. It has been found that the degree of thermodynamic perfection of turbines and turbocompressors are sufficiently high. Usually, the bigger was the difference between average parameters of the working fluid and the environment, the smaller was the exergy losses. The same situation was also true for heat exchangers. High temperature level in regenerative refrigerator, as compared with intermediate refrigerator, give a higher degree of thermodynamic perfection of the heat exchanger. Exergy losses in other elements of the system were caused by dissipation of the flow transport in the pipelines or by mechanical losses. It has been found that for the system as a whole the degree of thermodynamic perfection was less than the same characteristics for any element of the system in result of the mutual influence of the element on the other in the system.