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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">10.30724/1998-9903-2020-22-1-49-57</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-1284</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>ЭНЕРГЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Повышение эффективности работы теплообменного оборудования использованием пульсационных методов очистки</article-title><trans-title-group xml:lang="en"><trans-title>Improving heat exchanger efficiency using the pulsed method of cleaning</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>Хайбуллина</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Haibullina</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хайбуллина Айгуль Ильгизаровна – канд. техн. наук, доцент кафедры «Энергообеспечение предприятий и энергоресурсосберегающих технологий» (ЭЭ)</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Aigul I. Haibullina</p><p>Kazan </p></bio><email xlink:type="simple">haybullina.87@mail.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>Зиннатуллин</surname><given-names>Н. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Zinnatullin</surname><given-names>N. X.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зиннатуллин Назиф Хатмуллович – д-р техн. наук, профессор кафедры «Процессы и аппараты химической технологии»</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Nazif X. Zinnatullin</p><p>Kazan </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильин</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyin</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильин Владимир Кузьмич – д-р техн. наук, профессор, заведующий кафедрой «Энергообеспечение предприятий и энергоресурсосберегающих технологий» (ЭЭ), проректор по непрерывному образованию</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Vladimir K. Ilyin</p><p>Kazan </p></bio><email xlink:type="simple">ilyinvk@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский  государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский национальный исследовательский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan National Research Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>04</month><year>2020</year></pub-date><volume>22</volume><issue>1</issue><fpage>49</fpage><lpage>57</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хайбуллина А.И., Зиннатуллин Н.Х., Ильин В.К., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Хайбуллина А.И., Зиннатуллин Н.Х., Ильин В.К.</copyright-holder><copyright-holder xml:lang="en">Haibullina A.I., Zinnatullin N.X., Ilyin V.K.</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/1284">https://www.energyret.ru/jour/article/view/1284</self-uri><abstract><p>На сегодняшний день загрязнение теплообменного оборудования приводит к серьезным экономическим убыткам в многих отраслях промышленности, поэтому поиски метода для снижения скорости или предотвращения загрязнения остается актуальной задачей. В данной работе предложено практическое решение для реализация пульсационного метода очистки на примере маслоохладителей. Проведено численное исследование влияния пульсационного потока на эффекты способствующие уменьшению загрязнений на внешней поверхности пучков труб. Численное исследование проводилось с использованием ПО Ansys Fluent. Течение жидкости описывалось уравнением Навье-Стокса, движение частиц и их взаимодействие описывалось методом дискретных элементов (DEM). При исследовании был рассмотрен шахматный пучок труб. Частота пульсаций соответствовала 0,3125 Гц, амплитуда отнесенная к диаметру трубки пучка 35, число Рейнольдса 100, скважность пульсаций соответствовала 0,25. В качестве рабочей среды было выбрано масло. Оценка пульсационной методики очистки осуществлялась на основе анализа механика соударения частиц о поверхность центрального цилиндра в пучке, при стационарном и пульсационном потоке. Установлено, что пульсационный поток способствует уменьшению загрязнений в передней области цилиндра и не эффективен в задней. Анализ механики соударения частиц о поверхность теплообмена показал, что данный режим пульсаций эффективней для удаления пластичных отложений. </p></abstract><trans-abstract xml:lang="en"><p>The fouling of heat exchange equipment leads to serious economic losses in many industries, therefore to find a method to reduce deposits on heat transfer surfaces remains an actual task. In this paper, a practical solution is proposed for the implementation of a pulsating cleaning method of oil coolers as an example. The influence of pulsations on cleaning of the external surface of the heat exchanger is studied by computer modeling with Ansys Fluent. The fluid flow was described by the Navier-Stokes equation, particle motion and their interaction was described by the discrete element method (DEM). In the study, a staggered tube bundle was considered. The pulse frequency 0,3125 Hz, the amplitude referred to the diameter of tube is 35, the Reynolds number 100, the duty cycle of the pulsations 0,25. Oil was chosen as the medium. Evaluation of the pulsating cleaning method was carried out on the basis of the analysis of the mechanics of particle collisions on the surface of the central cylinder in the beam, with stationary and pulsating flow. It was found that the pulsating flow helps to reduce deposits in the front of the cylinder and is not effective in the back. An analysis of the mechanics of particle impact on the heat exchange surface showed that this pulsation mode is more effective for removing plastic deposits. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>маслоохладитель</kwd><kwd>скорость эрозии</kwd><kwd>очистка теплообменников</kwd><kwd>низкочастотные несимметричные пульсации</kwd><kwd>метод дискретных элементов</kwd><kwd>шахматный пучок труб</kwd><kwd>математическое моделирование</kwd><kwd>пульсационная очистка</kwd><kwd>пульсирующие течения</kwd><kwd>загрязнения теплообменной поверхности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oil cooler</kwd><kwd>erosion rate</kwd><kwd>heat exchanger cleaning</kwd><kwd>low-frequency asymmetrical impulses</kwd><kwd>discrete element method</kwd><kwd>staggered tube bundle</kwd><kwd>mathematical modeling</kwd><kwd>pulsating cleaning</kwd><kwd>pulsating flow</kwd><kwd>surface contamination</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья выполнена в рамках научного проекта 18-79-10136 «Теоретические методы моделирования и разработки энергоэффективных импортозамещающих аппаратов очистки и глубокой переработки углеводородного сырья на предприятиях топливно-энергетического комплекса».</funding-statement><funding-statement xml:lang="en">The article is executed within the framework of the scientific project 18-79- 10136 «Theoretical methods for modeling and developing energy-efficient import-substituting cleaners and deep processing of hydrocarbon raw materials at enterprises of the fuel and energy complex».</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Хайбуллина АИ. 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