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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2024-26-4-150-159</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-3110</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ТЕОРЕТИЧЕСКАЯ И ПРИКЛАДНАЯ ТЕПЛОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORETICAL AND APPLIED HEAT ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Энергетические особенности CO2-циклов при кислородном сжигании метанола</article-title><trans-title-group xml:lang="en"><trans-title>Energy features of CO2-cycles during oxygen combustion of methanol</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4313-6907</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щинников</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchinnikov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щинников Павел Александрович – докт. техн. наук, профессор, заведующий кафедрой Тепловых электрических станций (ТЭС)</p><p>г. Новосибирск</p></bio><bio xml:lang="en"><p>Pavel A. Shchinnikov</p><p>Novosibirsk</p></bio><email xlink:type="simple">shchinnikov@corp.nstu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Садкин</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sadkin</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Садкин Иван Сергеевич – аспирант кафедры Тепловых электрических станций (ТЭС)</p><p>г. Новосибирск</p></bio><bio xml:lang="en"><p>Ivan S. Sadkin</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боруш</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Borush</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боруш Олеся Владимировна – докт. техн. наук, доцент, профессор кафедры Тепловых электрических станций (ТЭС)</p><p>г. Новосибирск</p></bio><bio xml:lang="en"><p>Olesya V. Borush</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романенко</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanenko</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Романенко Роман Владимирович – студент кафедры Тепловых электрических станций (ТЭС)</p><p>г. Новосибирск</p></bio><bio xml:lang="en"><p>Roman V. Romanenko</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Новосибирский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>23</day><month>09</month><year>2024</year></pub-date><volume>26</volume><issue>4</issue><fpage>150</fpage><lpage>159</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Щинников П.А., Садкин И.С., Боруш О.В., Романенко Р.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Щинников П.А., Садкин И.С., Боруш О.В., Романенко Р.В.</copyright-holder><copyright-holder xml:lang="en">Shchinnikov P.A., Sadkin I.S., Borush O.V., Romanenko R.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.energyret.ru/jour/article/view/3110">https://www.energyret.ru/jour/article/view/3110</self-uri><abstract><p>ЦЕЛЬ работы заключается в определении массо-расходных характеристик рабочих веществ и энергетических показателей установки на основе СО2-цикла с двухступенчатым повышением давления (цикла Аллама) при кислородном сжигании метанола.</p><sec><title>МЕТОДЫ</title><p>МЕТОДЫ. Представлена методика, в которой массо-расходные характеристики рабочих веществ определяют на основе реакций горения и синтеза метанола и электролиза воды. Эти реакции являются основными для обеспечения рабочих процессов в установке. В основе метода лежат мольные соотношения веществ, участвующих в реакциях при стехиометрических условиях. С использованием термодинамических параметров цикла и при заданной мощности установки определяют расходы рабочего тела, долю обновления углекислоты, количество метанола, получаемого в установке синтеза, количество свежего метанола, подводимого к циклу, количество водорода, получаемого в установке электролиза воды и количество кислорода, необходимого для процессов горения топлива. Одновременно определяют количество коммерческого водорода, то есть выводимого на склад. Затраты электроэнергии на определение мощности собственных нужд определяют по нормативными методам и данным заводов изготовителей оборудования.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Показано, что при близких значениях термических КПД СО2-циклов на основе кислородного сжигания метана и метанола у последнего количество углекислоты, выводимой из цикла на захоронение на 11% меньше. Показано, что СО2-цикл, работающий на метаноле, одновременно с выработкой электроэнергии способен вырабатывать коммерческий водород. Удельные затраты электроэнергии на его производство составят на ~22 % меньше, чем при производстве без сочетания с СО2-циклом.</p></sec></abstract><trans-abstract xml:lang="en"><p>The PURPOSE of the work is to determine the mass-flow characteristics of working substances and energy indicators of an installation based on a CO2 cycle with a two-stage pressure increase (Allam cycle) during oxygen combustion of methanol.</p><sec><title>METHODS</title><p>METHODS. A research methodology is presented in which the mass-flow characteristics of working substances are determined based on the reactions of combustion and synthesis of methanol and electrolysis of water. These reactions are basic for ensuring operational processes in the installation. The method is based on the molar ratios of substances participating in reactions under stoichiometric conditions. Using the thermodynamic parameters of the cycle being implemented and at a given installation power, the consumption of the working fluid, the share of carbon dioxide renewal in the cycle, the amount of methanol produced in the synthesis unit, the amount of fresh methanol, the amount of hydrogen produced in the water electrolysis unit and the amount of oxygen are determined, necessary to ensure fuel combustion processes. At the same time, the amount of commercial hydrogen is determined. Electricity consumption for own needs is determined using regulatory methods and data from equipment manufacturers.</p></sec><sec><title>RESULTS</title><p>RESULTS. The article shows that with similar values of thermal efficiency of CO2 cycles based on oxygen combustion of methane and methanol, the amount of carbon dioxide removed from the cycle for disposal is 11% less. It has been shown that a CO2 cycle operating on methanol is capable of producing commercial hydrogen simultaneously with electricity generation. The specific electricity consumption for hydrogen production is 22% less than for its production without combination with the CO2 cycle.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>цикл Аллама</kwd><kwd>метанол</kwd><kwd>водород</kwd><kwd>кислородное сжигание</kwd><kwd>метод исследования</kwd><kwd>эффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Allama cycle</kwd><kwd>methanol</kwd><kwd>hydrogen</kwd><kwd>oxygen combustion</kwd><kwd>research method</kwd><kwd>indicators</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Sanz., W., Jericha, H., Moser, M., Heitmeir, F., 2004, "Thermodynamic and Economic Investigation of an Improved Graz Cycle Power Plant for CO2 Capture", ASME Paper GT2004-53722, ASME Turbo Expo 2004, Vienna, Austria. 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