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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">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2019-46-3-32-42</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-690</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>ЭНЕРГЕТИЧЕСКОЕ, МЕТАЛЛУРГИЧЕСКОЕ И ХИМИЧЕСКОЕ МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER, METALLURGICAL AND CHEMICAL MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>ПРОГНОЗИРОВАНИЕ ПРИМЕНЕНИЯ ХОЛОДИЛЬНЫХ АГЕНТОВ  В НИЗКОТЕМПЕРАТУРНОЙ ТЕХНИКЕ</article-title><trans-title-group xml:lang="en"><trans-title>PREDICTION OF THE USE OF REFRIGERANTS IN LOW-TEMPERATURE  EQUIPMENT</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>Татаренко</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tatarenko</surname><given-names>J. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, факультет низкотемпературной энергетики</p><p>197101, г. Санкт-Петербург, Кронверкский пр. 49</p></bio><bio xml:lang="en"><p>Cand.Sci. (Technical), Assoc.Prof., Faculty of Low Temperature Energy</p><p>49, Kronverk Ave., St. Petersburg 197101</p></bio><email xlink:type="simple">lavrtat@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>Мизин</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mizin</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, факультет низкотемпературной энергетики</p><p>197101, г. Санкт-Петербург, Кронверкский пр. 49</p></bio><bio xml:lang="en"><p> Cand.Sci. (Technical), Assoc.Prof., Faculty of Low Temperature Energy</p><p>49, Kronverk Ave., St. Petersburg 197101</p></bio><email xlink:type="simple">valeriy-mizin@yandex.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>Рачковский</surname><given-names>Н. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Rachkovskiy</surname><given-names>N. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, факультет низкотемпературной энергетики</p><p>197101, г. Санкт-Петербург, Кронверкский пр. 49</p></bio><bio xml:lang="en"><p>Aspirant, Faculty of Low Temperature Energy</p><p>49, Kronverk Ave., St. Petersburg 197101</p></bio><email xlink:type="simple">rachkovskiy.nikita@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский национальный исследовательский университет  информационных технологий, механики и оптики (ИТМО)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg National Research University of Information Technologies, Mechanics, and Optics (ITMO University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>23</day><month>11</month><year>2019</year></pub-date><volume>46</volume><issue>3</issue><fpage>32</fpage><lpage>42</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Татаренко Ю.В., Мизин В.М., Рачковский Н.О., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Татаренко Ю.В., Мизин В.М., Рачковский Н.О.</copyright-holder><copyright-holder xml:lang="en">Tatarenko J.V., Mizin V.M., Rachkovskiy N.O.</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://vestnik.dgtu.ru/jour/article/view/690">https://vestnik.dgtu.ru/jour/article/view/690</self-uri><abstract><sec><title> Цель</title><p> Цель. Определение перспектив применения различных холодильных агентов, а также потенциал их взаимозаменяемости в низкотемпературной технике исходя из условий Кигалийской поправки к Монреальской конференции.</p></sec><sec><title>Метод</title><p>Метод. Произведено компьютерное моделирование процессов теплообмена на основе общепринятых зависимостей и получены данные для построения характеристик элементов холодильной машины.</p></sec><sec><title>Результат</title><p> Результат. R717 и R410A рекомендованы для использования в средне- и низкотемпературных машинах. Холодильный агент R32 - в высокотемпературных холодильных машинах, особенно, в аппаратах с медными оребренными трубами. Низкое паросодержание хладона R32 препятствует образованию «запаривания» верхних слоёв пучка труб, что приводит к повышению уровня холодильного агента в испарителе и увеличению площади рабочей области трубного пучка испарителя. Для R32 необходимо провести дополнительные исследования по поиску его альтернативной замены. Наиболее высокие значения коэффициента теплоотдачи получены при работе на  холодильных агентах R410А и R717.</p></sec><sec><title>Вывод</title><p>Вывод. С помощью реализованных алгоритмов возможно получать характеристики элементов парокомпрессорной холодильной машины в широком диапазоне изменения температур кипения и конденсации с учетом различных факторов и процентного состава смесевого рабочего вещества, что весьма актуально при переводе машин на альтернативные холодильные агенты. </p></sec></abstract><trans-abstract xml:lang="en"><p>Objectives Determination of prospects for the use of various refrigerants, as well as the potential for their interchangeability in low-temperature equipment in accordance with the conditions of the Kigali Amendment to the Montreal Protocol on substances that deplete the ozone layer.</p><p>Method A computer simulation of heat exchange processes based on generally accepted dependencies was carried out and data for the construction of refrigeration machine elements obtained.</p><p>Results R717 and R410A are recommended for use in medium- and low-temperature machines. R32 refrigerant is used in high-temperature refrigeration machines, especially in units with finned copper tubes. The low vapour content of R32 refrigerant prevents steaming of the upper layers of the tube bundle, leading to an increase in the level of the refrigerant in the evaporator and in the working area of the evaporator tube bundle. For R32, it is necessary to conduct additional research to find an alternative refrigerant. The highest values of the heat transfer coefficient are obtained when working on refrigerants R410A and R717.</p><p>Conclusion The implemented algorithms can be helpful for obtaining the characteristics of the steam-compressor refrigerator elements across a wide range of boiling and condensing temperatures taking various factors and the percentage composition of the mixed working substance into account. This is a highly important consideration when converting the machines to run on alternative refrigerants. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>холодильный агент</kwd><kwd>холодильная машина</kwd><kwd>эффективность</kwd><kwd>характеристика</kwd><kwd>кожухотрубный испаритель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Refrigerant</kwd><kwd>refrigeration machine</kwd><kwd>efficiency</kwd><kwd>characteristic</kwd><kwd>shell-and-tube evaporator</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">Хозяинова Е.Л. Охрана Озонового слоя: Россия и Европа // Академия педагогических идей Новация. Серия: Студенческий научный вестник. 2017. №2. С. 12-39.</mixed-citation><mixed-citation xml:lang="en">Khozyainova Ye.L. Okhrana Ozonovogo sloya: Rossiya i Yevropa // Akademiya pedagogicheskikh idey Novatsiya. Seriya: Studencheskiy nauchnyy vestnik. 2017. №2. S. 12-39. 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