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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2022-67-1-49-56</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-720</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, ТЕПЛО- И МАССООБМЕН</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING, HEAT AND MASS TRANSFER</subject></subj-group></article-categories><title-group><article-title>Интенсификация теплообмена в зоне испарителя термосифона при изменении формы поверхности кипения</article-title><trans-title-group xml:lang="en"><trans-title>Intensification of heat transfer in the zone of the thermosyphon evaporator when changing the boiling surface shape</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>Кузьмич</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzmich</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кузьмич Максим Александрович – младший научный сотрудник</p><p>ул. П. Бровки 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Maxim A. Kuzmich – Junior Researcher</p><p>15, P. Brovka Str., 220072, Minsk </p></bio><email xlink:type="simple">KuzmichMA@hmti.ac.by</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>Артюх</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Artsiukh</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артюх Алена Александровна – инженер</p><p>ул. П. Бровки 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Aliona A. Artsiukh – Engineer</p><p>15, P. Brovka Str., 220072, Minsk </p></bio><email xlink:type="simple">a.gasporovich@hmti.ac.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт тепло- и массообмена имени А. В. Лыкова Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>A.V. Luikov Heat and Mass Transfer Institute of National Academy Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>04</month><year>2022</year></pub-date><volume>67</volume><issue>1</issue><fpage>49</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кузьмич М.А., Артюх А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Кузьмич М.А., Артюх А.А.</copyright-holder><copyright-holder xml:lang="en">Kuzmich M.A., Artsiukh A.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://vestift.belnauka.by/jour/article/view/720">https://vestift.belnauka.by/jour/article/view/720</self-uri><abstract><p>Рассмотрено влияние некоторых видов обработки поверхности кипения испарителя термосифона на коэффициент теплоотдачи. Разработана и собрана экспериментальная установка «Кольцевой термосифон с возможностью замены нижней части испарителя». Эта особенность позволяет легко производить замену образцов с различными модификациями поверхностей. Приведено описание установки, использованного оборудования и методики проведения исследований. Получены экспериментальные данные, рассчитаны коэффициенты теплоотдачи для исследуемых образцов при различных подводимых тепловых нагрузках (от 5 до 200 Вт). Проведено сравнение образцов в качестве поверхности кипения в испарителе термосифона. Экспериментально определено, что при нанесении на плоскую алюминиевую пластинку (поверхность кипения) концентрических канавок и неравномерного слоя частиц оксида алюминия наблюдается повышение коэффициента теплоотдачи с h1 = 5760 Вт/(м2·К) по h2 = 28339 Вт/(м2 ·К) при подводимой плотности теплового потока q = 250 кВт/м2. Коэффициент теплоотдачи для образца без канавок, но с неравномерным покрытием частиц оксида алюминия равен h3 = 16952 Вт/(м2 ·К) при q = 250 кВт/м2. Полученные результаты можно использовать для дальнейших исследований с целью улучшения теплообмена на поверхности кипения в испарителе термосифона.</p></abstract><trans-abstract xml:lang="en"><p>In present paper the influence of the boiling surface treatment types of thermosyphon evaporator on the heat transfer coefficient was studied. An experimental setup «Loop thermosyphon with replacing lower part of the evaporator» has been developed and assembled. This feature makes it easy to replace samples with various surface modifications as the lower part of the evaporator. The description of the experimental setup, equipment and research methods is given. Heat transfer coefficients for the samples at various applied thermal loads (from 5 to 200 W) were calculated. In case of flat aluminum plate (boiling surface) concentric grooves and uneven coating of aluminum oxide particles, an increase of the heat transfer coefficient from h1 = 5760 W/(m2·K) to h2 = 28339 W/(m2·K) at the supplied heat flux density q = 250 kW/m2 was observed. The heat transfer coefficient for a sample without concentric grooves, but with an uneven coating of aluminum oxide particles was h3 = 16952 W/(m2·K) at q = 250 kW/m2. Results of the study can be used for further increase of thermosyphon evaporator efficiency.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термосифон</kwd><kwd>теплообмен</kwd><kwd>коэффициент теплоотдачи</kwd><kwd>кипение</kwd><kwd>поверхность кипения</kwd><kwd>испаритель</kwd><kwd>конденсатор</kwd><kwd>тепловая нагрузка</kwd><kwd>пористое покрытие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermosyphon</kwd><kwd>heat exchange</kwd><kwd>heat transfer coefficient</kwd><kwd>boiling</kwd><kwd>boiling surface</kwd><kwd>evaporator</kwd><kwd>condenser</kwd><kwd>heat load</kwd><kwd>porous coating</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">Пародинамические термосифоны и их применение в тепловом оборудовании различного назначения / Л.Л. 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