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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">vguit</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Воронежского государственного университета инженерных технологий</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Voronezh State University of Engineering Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-910X</issn><issn pub-type="epub">2310-1202</issn><publisher><publisher-name>VSUET</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20914/2310-1202-2021-1-30-35</article-id><article-id custom-type="elpub" pub-id-type="custom">vguit-2655</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>Процессы и аппараты пищевых производств</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Processes and equipment for food industry</subject></subj-group></article-categories><title-group><article-title>Термодинамика фазового равновесия в системах твердое тело–жидкость и твердое тело–газ</article-title><trans-title-group xml:lang="en"><trans-title>Thermodynamics of phase equilibrium in solid-liquid and solid-gas systems</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишацкий</surname><given-names>Ю. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishatskii</surname><given-names>Y. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор, кафедра физики, теплотехники и теплоэнергетики, пр-т Революции, 19, г. Воронеж, 394036, Россия</p></bio><bio xml:lang="en"><p>Dr. Sci. (Engin.), professor, physics, heatengineering and heat power engineering department, Revolution Av., 19 Voronezh, 394036, Russia</p></bio><email xlink:type="simple">noreplay@elpub.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9726-9262</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дерканосова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Derkanosova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент, кафедра сервиса и ресторанного бизнеса, пр-т Революции, 19, г. Воронеж, 394036, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Engin.), associate professor, service and restaurant business department, Revolution Av., 19 Voronezh, 394036, Russia</p></bio><email xlink:type="simple">aa-derk@ya.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>Толстов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolstov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент, кафедра авиационных двигателей, ул. Старых Большевиков, 54 «А», г. Воронеж, 394064, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Engin.), associate professor, Department of Aircraft Engines, 54 "A" Starykh Bolshevikov str., Voronezh, 394064, Russia</p></bio><email xlink:type="simple">serezha.tolstoff@ya.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Воронежский государственный университет инженерных технологий</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State University of Engineering Technologies</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Military Training and Research Center of the Air Force Air Force Academy named after Professor N.E. Zhukovsky and Yu.A. Gagarin»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>01</day><month>04</month><year>2021</year></pub-date><volume>83</volume><issue>1</issue><fpage>30</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шишацкий Ю.И., Дерканосова А.А., Толстов С.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Шишацкий Ю.И., Дерканосова А.А., Толстов С.А.</copyright-holder><copyright-holder xml:lang="en">Shishatskii Y.I., Derkanosova A.A., Tolstov S.A.</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.vestnik-vsuet.ru/vguit/article/view/2655">https://www.vestnik-vsuet.ru/vguit/article/view/2655</self-uri><abstract><p>Термодинамическое равновесие двухфазной системы описывается уравнением Гиббса, включающее параметры состояния. На основе уравнения Гиббса и объединенного уравнения первого и второго законов термодинамики записаны термодинамические потенциалы: внутренней энергии, энтальпии и свободной энергии Гиббса. Если две фазы находятся в равновесии, то температуры, давления и химические потенциалы этих фаз равны между собой. Равенства выражают условия термического и механического равновесия, а также условие отсутствия движущей силы для переноса компонента через границу раздела фаз. Для двухфазной системы уравнение Гиббса-Дюгема связывает объем и энтропию 1 моля смеси, содержание любого компонента, выраженное в мольных долях. Рассмотрено экстрагирование из частиц люпина подсырной сывороткой (система твердое тело-жидкость). Движущей силой процесса экстрагирования в системе твердое тело-жидкость является разность между концентрацией растворяющего вещества у поверхности твердого тела С и его средней концентрацией С0 в основной массе раствора. Концентрация на границе раздела фаз обычно принимается равной концентрации насыщенного раствора Сн, поскольку вблизи поверхности твердого тела равновесие устанавливается довольно быстро. Тогда движущая сила процесса выражается как Сн–С0. Построена кривая извлечения экстрактивных веществ из люпина подсырной сывороткой наложением низкочастотных механических колебаний.</p></abstract><trans-abstract xml:lang="en"><p>The thermodynamic equilibrium of a two-phase system is described by the Gibbs equation, which includes state parameters. On the basis of the Gibbs equation and the combined equation of the first and second laws of thermodynamics, thermodynamic potentials are written: internal energy, enthalpy and Gibbs free energy. If the two phases are in equilibrium, then the temperatures, pressures and chemical potentials of these phases are equal to each other. Equalities express the conditions of thermal and mechanical equilibrium, as well as the condition for the absence of a driving force for the transfer of a component across the interface. For a two-phase system, the Gibbs-Duhem equation connects the volume and entropy of 1 mole of the mixture, the content of any component, expressed in mole fractions. Extraction from lupine particles with cheese whey (solid-liquid system) is considered. The driving force of the extraction process in the solid-liquid system is the difference between the concentration of the solvent at the surface of the solid C and its average concentration C0 in the bulk of the solution. The concentration at the interface is usually taken to be equal to the concentration of a saturated solution of Cn, since equilibrium is established rather quickly near the surface of a solid. Then the driving force of the process is expressed as Cn – C0. A curve for the extraction of extractives from lupine with cheese whey was plotted by superimposing low-frequency mechanical vibrations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>равновесие</kwd><kwd>устойчивость фаз</kwd><kwd>термодинамические потенциалы</kwd><kwd>движущие силы</kwd><kwd>экстрагирование</kwd><kwd>сушка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>equilibrium</kwd><kwd>phase stability</kwd><kwd>thermodynamic potentials</kwd><kwd>driving forces</kwd><kwd>extraction</kwd><kwd>drying</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">Праздникова Е.М. Исследование процесса твердофазной экстракции в лабораторном экстракторе-центрифуге // Результаты современных научных исследований и разработок. 2019. С. 30-33.</mixed-citation><mixed-citation xml:lang="en">Prazdnikova E.M. 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