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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">agroengineering</journal-id><journal-title-group><journal-title xml:lang="ru">Агроинженерия</journal-title><trans-title-group xml:lang="en"><trans-title>Agricultural Engineering (Moscow)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2687-1149</issn><issn pub-type="epub">2687-1130</issn><publisher><publisher-name>РГАУ-МСХА</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26897/2687-1149-2021-5-25-30</article-id><article-id custom-type="elpub" pub-id-type="custom">agroengineering-128</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>ТЕХНИКА И ТЕХНОЛОГИИ АПК</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FARM MACHINERY AND TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>ТЕОРЕТИЧЕСКОЕ ОБОСНОВАНИЕ УГЛОВОЙ КОРРЕКЦИИ ВЕКТОРА ПОТОКА СТРУИ ПРИТОЧНОГО ВОЗДУХА В СИСТЕМАХ ВЕНТИЛЯЦИИ ПРОМЫШЛЕННЫХ И СЕЛЬСКОХОЗЯЙСТВЕННЫХ ОБЪЕКТОВ</article-title><trans-title-group xml:lang="en"><trans-title>THEORETICAL GROUNDS FOR ANGULAR CORRECTION OF THE SUPPLY AIR JET FLOW VECTOR IN THE VENTILATION SYSTEMS OF INDUSTRIAL AND AGRICULTURAL FACILITIES</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>Игнаткин</surname><given-names>ИВАН ЮРЬЕВИЧ</given-names></name><name name-style="western" xml:lang="en"><surname>Ignatkin</surname><given-names>IVAN YU.</given-names></name></name-alternatives><email xlink:type="simple">ignatkinivan@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский государственный аграрный университет - МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>07</day><month>11</month><year>2021</year></pub-date><volume>0</volume><issue>5</issue><fpage>25</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Игнаткин И.Ю., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Игнаткин И.Ю.</copyright-holder><copyright-holder xml:lang="en">Ignatkin I.Y.</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://agroengineering.timacad.ru/jour/article/view/128">https://agroengineering.timacad.ru/jour/article/view/128</self-uri><abstract><p>В отопительный период температура приточного воздуха ниже, чем в производственных помещениях, охлажденный воздух плотнее. Поступая в теплое помещение, он стремится вниз, и это явление приводит к образованию охлажденных и застойных зон. В статье представлено теоретическое исследование о возможности обеспечения максимальной дальности распространения неизотермической струи приточного воздуха путем угловой коррекции вектора потока на выходе из вентиляционной установки. С опорой на материалы теории бесканального распределения воздуха произведены расчеты и построен график траекторий движения потока приточного воздуха из комбинированной климатической установки с утилизацией теплоты в производственном помещении в интервале наружных температур от +10 до –40°C. С учетом длительности наружных температур построены плоские срезы трехмерного графика с шагом 10°C в диапазоне от +10 до –30°C. Установлено, что максимальная зона обслуживания установки ограничена дальностью распространения струи приточного воздуха, и ее можно увеличить путем изменения направления вектора потока на угол в диапазоне 0…34°. Значение угла наклона вектора потока струи приточного воздух определяется полученной аппроксимационной зависимостью. С учетом регулирования вектора потока дополнена формула М.З. Печатникова для определения дальности распространения ограниченной осесимметричной струи. Проведенные исследования позволили установить зависимости дальности распространения струи приточного воздуха установки от наружной температуры и угла наклона вектора потока, а также теоретический диапазон варьирования угла наклона вектора потока, который составляет 0…34°.</p></abstract><trans-abstract xml:lang="en"><p>During the heating period, the supply air temperature is lower than that in industrial premises, and the cooled air is denser. Entering a warm room, it tends to move downward. This condition leads to the formation of chilled and stagnant zones. The article presents a theoretical study on the possibility of ensuring the maximum propagation range of a non-isothermal supply air jet by angular correction of the flow vector at the outlet of the ventilation unit. Based on the theory of free air distribution, the author analyzed and graphically visualized the flow trajectories of the supply air from the combined climate control unit with heat recovery in the production room in the range of outdoor temperatures from +10 to -40°C. Given the time period of outdoor temperatures, flat sections of a three-dimensional graph were built with a step of 10°C in the range from +10 to -30°C. The author found that the maximum service area of the installation is limited by the propagation range of the supply air jet. The area can be increased by changing the direction of the flow vector by an angle ranging between 0 and 34°. The value of the inclination angle of the flow vector of the supply air jet is determined by the obtained approximation dependency. Considering the regulation of the flow vector, the author used the formula of M.Z. Pechatnikov to determine the propagation range of a limited axisymmetric jet. The studies carried out made it possible to establish the relationship between the propagation range of the supply air jet of the installation and the outside temperature, the inclination angle of the flow vector, and the theoretical variation range of the inclination angle of the flow vector, ranging between 0 and 34°.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вентиляция</kwd><kwd>затопленная струя</kwd><kwd>критерий Архимеда</kwd><kwd>приточная вентиляция</kwd><kwd>струйная вентиляция</kwd><kwd>неизотермическая струя</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ventilation</kwd><kwd>immersed jet</kwd><kwd>Archimedes criterion</kwd><kwd>supply ventilation</kwd><kwd>jet ventilation</kwd><kwd>non-isothermal jet</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">Tikhomirov D.A., Trunov S.S., Kuzmichev A.V et al. 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