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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Vestnik of Samara State Technical University. Technical Sciences Series</journal-id><journal-title-group><journal-title xml:lang="en">Vestnik of Samara State Technical University. Technical Sciences Series</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Самарского государственного технического университета. Серия «Технические науки»</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1991-8542</issn><issn publication-format="electronic">2712-8938</issn><publisher><publisher-name xml:lang="en">Samara State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">681976</article-id><article-id pub-id-type="doi">10.14498/tech.2025.2.6</article-id><article-id pub-id-type="edn">KUQSAM</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Energy and Electrical Engineering</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Энергетика и электротехника</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Improving the efficiency of a regasification circuit operating on a two-stage Brayton cycle for cryogenic energy storage systems</article-title><trans-title-group xml:lang="ru"><trans-title>Повышение эффективности контура регазификации, работающего по двухкаскадному циклу Брайтона, для криогенной системы хранения энергии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Blagin</surname><given-names>Evgeny V.</given-names></name><name xml:lang="ru"><surname>Благин</surname><given-names>Евгений Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D. (Techn.), Associate Professor, Dept. of Thermal Engineering and Heat Engines</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры теплотехники и тепловых двигателей</p></bio><email>blagin.ev@ssau.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Uglanov</surname><given-names>Dmitry A.</given-names></name><name xml:lang="ru"><surname>Угланов</surname><given-names>Дмитрий Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Techn.), Professor, Dept. of Thermal Engineering and Heat Engines</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор кафедры теплотехники и тепловых двигателей</p></bio><email>uglanov.da@ssau.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuznetsova</surname><given-names>Elizaveta P.</given-names></name><name xml:lang="ru"><surname>Кузнецова</surname><given-names>Елизавета Павловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Student</p></bio><bio xml:lang="ru"><p>студент</p></bio><email>Lange.elizaveta@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Galkina</surname><given-names>Natalia V.</given-names></name><name xml:lang="ru"><surname>Галкина</surname><given-names>Наталья Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Senior Lecturer, Dept. of Engineering Graphics</p></bio><bio xml:lang="ru"><p>старший преподаватель кафедры инженерной графики</p></bio><email>galkina.nv@ssau.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kudinov</surname><given-names>Igor V.</given-names></name><name xml:lang="ru"><surname>Кудинов</surname><given-names>Игорь Васильевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Techn.), Professor, Head of Physics Department</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор, заведующий кафедрой физики</p></bio><email>igor-kudinov@bk.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Samara National Research University named after Academician S.P. Korolev</institution></aff><aff><institution xml:lang="ru">Самарский национальный исследовательский университет им. академика С.П. Королёва</institution></aff><aff><institution xml:lang="kk"></institution></aff><aff><institution xml:lang="pt"></institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Samara National Research University named after Academician S.P. Korolev</institution></aff><aff><institution xml:lang="ru">Самарский национальный исследовательский университет им. академика С.П. Королёва</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Samara State Technical University</institution></aff><aff><institution xml:lang="ru">Самарский государственный технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2025</year></pub-date><volume>33</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>94</fpage><lpage>108</lpage><history><date date-type="received" iso-8601-date="2025-06-02"><day>02</day><month>06</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-07-28"><day>28</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Blagin E.V., Uglanov D.A., Kuznetsova E.P., Galkina N.V., Kudinov I.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Благин Е.В., Угланов Д.А., Кузнецова Е.П., Галкина Н.В., Кудинов И.В.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Blagin E.V., Uglanov D.A., Kuznetsova E.P., Galkina N.V., Kudinov I.V.</copyright-holder><copyright-holder xml:lang="ru">Благин Е.В., Угланов Д.А., Кузнецова Е.П., Галкина Н.В., Кудинов И.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/1991-8542/article/view/681976">https://journals.eco-vector.com/1991-8542/article/view/681976</self-uri><abstract xml:lang="en"><p>Currently, the issue of compensating for uneven loads on power grids is one of the key directions in the development of the energy sector. One solution to this problem is the use of cryogenic energy storage systems, which allow energy to be stored in the form of liquefied gas. The main drawback of such systems is their relatively low storage coefficient, and this paper proposes to improve it by using a two-stage Brayton cycle in the regasification circuit. As a result of technical and economic analysis, a Pareto-efficient frontier of circuit configurations was obtained, working fluids for the upper and lower stages were determined, and the profitability of the installations was established.</p></abstract><trans-abstract xml:lang="ru"><p>В настоящее время вопрос компенсации неравномерности нагрузки на энергосети является одним из ключевых направлений развития энергетической отрасли. Одним из решений этой проблемы является применение криогенной системы хранения энергии, которая позволяет хранить энергию в виде сжиженного газа. Основным недостатком такой системы является относительно низкий коэффициент аккумулирования, и в данной работе предлагается повысить его за счет использования двухкаскадного цикла Брайтона в составе контура регазификации. В результате технико-экономического анализа был получен фронт парето-эффективных конфигураций контура, определены рабочие тела для верхнего и нижнего каскадов, найдена рентабельность установок.</p></trans-abstract><kwd-group xml:lang="en"><kwd>regasification circuit</kwd><kwd>two-stage Brayton cycle</kwd><kwd>circuit efficiency improvement</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>контур регазификации</kwd><kwd>двухкаскадный цикл Брайтона</kwd><kwd>повышение эффективности контура</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">REA Minenergo Rossii. 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