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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Refrigeration Technology</journal-id><journal-title-group><journal-title xml:lang="en">Refrigeration Technology</journal-title><trans-title-group xml:lang="ru"><trans-title>Холодильная техника</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>制冷技术</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0023-124X</issn><issn publication-format="electronic">2782-4241</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">635864</article-id><article-id pub-id-type="doi">10.17816/RF635864</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The role of miscible PAG lubricants in ammonia refrigeration systems reduction and compactness</article-title><trans-title-group xml:lang="ru"><trans-title>Роль смешивающихся смазочных материалов ПАГ в снижении загрузки аммиака в холодильных установках и повышении их компактности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name><surname>Muñoz-Alonso</surname><given-names>M.</given-names></name><address><country country="GB">United Kingdom</country></address><email>mmunoz@shrieve.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Dixon</surname><given-names>L.</given-names></name><address><country country="GB">United Kingdom</country></address><email>mmunoz@shrieve.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Seeton</surname><given-names>C.J.</given-names></name><address><country country="US">United States</country></address><email>cseeton@shrieve.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name><surname>Karnaz</surname><given-names>J.</given-names></name><address><country country="US">United States</country></address><email>cseeton@shrieve.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff id="aff1"><institution>Shrieve Products International Ltd.</institution></aff><aff id="aff2"><institution>Shrieve Chemical Products LLC.</institution></aff><pub-date date-type="preprint" iso-8601-date="2024-10-05" publication-format="electronic"><day>05</day><month>10</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-10-21" publication-format="electronic"><day>21</day><month>10</month><year>2024</year></pub-date><volume>113</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>21</fpage><lpage>30</lpage><history><date date-type="received" iso-8601-date="2024-09-09"><day>09</day><month>09</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-09-09"><day>09</day><month>09</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Эко-Вектор</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://freezetech.ru/0023-124X/article/view/635864">https://freezetech.ru/0023-124X/article/view/635864</self-uri><abstract xml:lang="en"><p>Today’s society is going through an expanding use of natural refrigerants, earlier present only in big industrial facilities. This has made necessary the charge reduction and compactness improvement of the equipment, to fit the safety measures and standards requirements.</p> <p>The refrigerant charge and the complexity of an ammonia refrigeration system are mainly because of flooded evaporators use and the need for an efficient oil separation system, since conventional lubricants and ammonia are immiscible.</p> <p>The use of ammonia miscible lubricants can address the oil separation problem. A Poly-Alkylene-Glycol</p> <p>(PAG) can be designed and formulated to be miscible with ammonia, and the plant operated like a conventional halocarbon refrigerant one. The circulating lubricant will be recovered through the compressor suction port of the compressor. This will help in the operation of Direct Expansion (DX) evaporators, reducing to a testimonial size the oil separation circuit.</p> <p>This article is a translation of the article by Muñoz-Alonso M, Dixon L, Seeton CJ, Karnaz J. The role of miscible PAG lubricants in ammonia refrigeration systems reduction and compactness. In: Proceedings of the 9th IIR Conference on the Ammonia and CO<sub>2</sub> Refrigeration Technologies. Ohrid: IIF/IIR, 2021. DOI: <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.18462/iir.nh3-co2.2021.0018">10.18462/iir.nh3-co2.2021.0018</ext-link> Published with the permission of the copyright holder.</p></abstract><trans-abstract xml:lang="ru"><p>Сегодня все чаще используются природные хладагенты, которые ранее применялись только на крупных промышленных объектах. Для обеспечения безопасности и соответствия требованиям стандартов требуется сокращение заправки и повышение компактности оборудования.</p> <p>Величина заправки хладагента и сложность аммиачной холодильной системы обусловлены главным образом использованием затопленных испарителей и необходимостью эффективной системы отделения масла, поскольку обычные смазочные материалы и аммиак не смешиваются.</p> <p>Использование смазочных материалов, смешивающихся с аммиаком, может решить проблему отделения масла. Можно разработать и полиалкиленгликоль (ПАГ) так, чтобы он был смешиваем с аммиаком, а установка работала как обычная холодильная установка с углеводородом. Циркулирующее масло будет возвращаться через патрубок всасывания компрессора. Это облегчит работу испарителей прямого расширения (DX), сократив до минимальных размеров контур отделения масла.</p> <p>Настоящая статья представляет собой перевод статьи Muñoz-Alonso M, Dixon L, Seeton CJ, Karnaz J. The role of miscible PAG lubricants in ammonia refrigeration systems reduction and compactness. In: Proceedings of the 9th IIR Conference on the Ammonia and CO<sub>2</sub> Refrigeration Technologies. Ohrid: IIF/IIR, 2021. DOI: <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.18462/iir.nh3-co2.2021.0018">10.18462/iir.nh3-co2.2021.0018</ext-link> Публикуется с разрешения правообладателя.</p></trans-abstract><kwd-group xml:lang="en"><kwd>lubricant</kwd><kwd>PAG</kwd><kwd>miscibility</kwd><kwd>ammonia</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>масло</kwd><kwd>ПАГ</kwd><kwd>смешиваемость</kwd><kwd>аммиак</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lamb R. Low Charge Packaged Ammonia Refrigeration Systems. In: 7th IIR Conference: Ammonia and CO2 Refrigeration Technologies. Ohrid, 2017.</mixed-citation></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Muñoz-Alonso M. The Role of the Lubricant Chemistry in a R-744 Refrigeration Plant. Oil Return and Lubricity. Comparison Between Two Chemistries Using Data from a Real Plant. In: 7th IIR Conference: Ammonia and CO2 Refrigeration Technologies. Ohrid, 2017.</mixed-citation><mixed-citation xml:lang="ru">Muñoz-Alonso M. The Role of the Lubricant Chemistry in a R-744 Refrigeration Plant. Oil Return and Lubricity. Comparison Between Two Chemistries Using Data from a Real Plant. In: 7th IIR Conference: Ammonia and CO2 Refrigeration Technologies. Ohrid, 2017 .</mixed-citation></citation-alternatives></ref><ref id="B3"><label>3.</label><mixed-citation>Stachowiak G. Batchelor A. Chapter 2. Physical Properties of Lubricants. In: Engineering Tribology. Butterworth Heinemann, 2000.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>ASHRAE Refrigeration Handbook. Chapter 12. ASHRAE, 2018.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Seeton C.J., Karnaz J. Thermodynamic and Transport Properties of Lubricant and Refrigerant Mixtures. Oil Management in Compressors and Their Systems. Purdue University Short Course, 2016.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Seeton C.J. Lubricant Roadmap to the Changing Refrigeration Market. Industry Day Presentation. In: 10th International Conference on Compressors and their Systems. City University of London, 2017.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Shrieve Information Bulletin Zerol. Alkylbenzene Lubricants. Zerol. 350 with Ammonia PVT Chart. Shrieve Chemical Products, The Woodlands, TX, USA, 2014.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Shrieve Information Bulletin. Solubility, Liquid Density, and Liquid Viscosity of Zerol PAG-R717 52 with Ammonia (R-717). Shrieve Chemical Products, The Woodlands, TX, USA, 2014.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Seeton C.J. CO2-Lubricant Two-Phase Patterns in Small Horizontal Wetted Wall Channels; The Effects of Refrigerant/Lubricant Thermophysical Properties [dissertation] Illinois, 2009.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Expósito J.A. A novel design of a very low ammonia chiller. In: CYTEF 2020. Congreso de Ciencias y Técnicas del Frío. Pamplona, 2020.</mixed-citation></ref></ref-list></back></article>
