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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2021-2-9-15</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1754</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>ОБЩИЕ ВОПРОСЫ МЕТРОЛОГИИ И ИЗМЕРИТЕЛЬНОЙ ТЕХНИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GENERAL PROBLEMS OF METROLOGY AND MEASUREMENT TECHNIQUES</subject></subj-group></article-categories><title-group><article-title>Методика построения уравнения состояния и термодинамических таблиц для хладагента нового поколения</article-title><trans-title-group xml:lang="en"><trans-title>Methodology for constructing the equation of state and thermodynamic tables for a new generation refrigerant</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7488-4193</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колобаев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolobaev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Александрович Колобаев</p><p>Москва</p></bio><bio xml:lang="en"><p>Viktor A. Kolobaev</p><p>Moscow</p></bio><email xlink:type="simple">kolobaev@vniims.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0428-9625</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рыков</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rykov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Владимирович Рыков</p><p> Санкт-Петербург</p></bio><bio xml:lang="en"><p>Sergey V. Rykov</p><p>St. Petersburg</p></bio><email xlink:type="simple">togg1@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7718-9660</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудрявцева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudryavtseva</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Владимировна Кудрявцева</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Irina V. Kudryavtseva</p></bio><email xlink:type="simple">neva0175@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8919-9797</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Устюжанин</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Ustyuzhanin</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Евгеньевич Устюжанин</p><p>Москва</p></bio><bio xml:lang="en"><p>Evgeniy E. Ustyuzhanin</p><p> Moscow</p></bio><email xlink:type="simple">evgust@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8435-4356</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попов</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Popov</surname><given-names>P. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петр Васильевич Попов</p><p>Москва</p><p> </p></bio><bio xml:lang="en"><p>Peter V. Popov</p><p>Moscow</p></bio><email xlink:type="simple">p.popov@vniims.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4694-6590</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рыков</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rykov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Алексеевич Рыков</p><p>Санкт-Петербург</p><p> </p></bio><bio xml:lang="en"><p>Vladimir A. Rykov</p><p>St. Petersburg</p></bio><email xlink:type="simple">rykov-vladimir@rambler.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9873-1009</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Свердлов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sverdlov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Викторович Свердлов</p><p>Санкт-Петербург</p><p> </p></bio><bio xml:lang="en"><p>Aleksandr V. Sverdlov</p><p>St. Petersburg</p></bio><email xlink:type="simple">asverdlov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Дмитриевич Козлов</p><p> Москва</p></bio><bio xml:lang="en"><p>Alexander D. Kozlov</p><p>St. Petersburg</p></bio><email xlink:type="simple">kozlov@vniims.ru</email><xref ref-type="aff" rid="aff-6"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт метрологической службы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Research Institute for Metrological Service</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский университет ИТМО</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University</institution><country>Russian Federation</country></aff></aff-alternatives><aff xml:lang="ru" id="aff-3"><institution>Национальный исследовательский университет ИТМО</institution><country>Russian Federation</country></aff><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Национальный исследовательский университет «МЭИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University “MPE”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт метрологической службы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Research Institute for Metrological Service,</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт метрологической службы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>21</day><month>06</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>9</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/1754">https://www.izmt.ru/jour/article/view/1754</self-uri><abstract><p>Разработано единое фундаментальное уравнение состояния 2,3,3,3-тетрафторпропена (R1234yf) – озонобезопасного хладагента четвёртого поколения и предложен метод построения уравнения. Данное уравнение в области газа переходит в уравнение состояния вириального вида, а в окрестности критической точки удовлетворяет требованиям современной масштабной теории критических явлений и переходит в масштабное уравнение Вайдома. На основе единого фундаментального уравнения состояния в соответствии с ГОСТ Р 8.614-2018 «ГСИ. Государственная служба стандартных справочных данных. Основные положения» разработаны стандартные справочные данные ГСССД 380-2020 о плотности, энтальпии, изобарной теплоёмкости, изохорной теплоёмкости, энтропии и скорости звука R1234yf в диапазонах температур 230–420 К и давлений 0,1–20 МПа. Выполнено сопоставление расчётных значений равновесных свойств с наиболее надёжными экспериментальными данными, полученными в известных лабораториях мира, и табличными данными, полученными на основе известных фундаментальных уравнений состояния R1234yf. Оценены неопределённости табулированных данных для давления насыщенного пара, плотности, энтальпии, изобарной теплоёмкости, изохорной теплоёмкости, энтропии и скорости звука 2,3,3,3-тетрафторпропена – стандартные относительные неопределённости по типам А, В, суммарная стандартная относительная и расширенная неопределённости. Полученные в работе результаты показывают, что предложенное единое фундаментальное уравнение состояния адекватно описывает равновесные свойства R1234yf в заявленном выше диапазоне параметров состояния.</p></abstract><trans-abstract xml:lang="en"><p>A unified fundamental equation of state 2,3,3,3-tetrafl uoropropene (R1234yf) has been developed, a fourth-generation ozone safe refrigerant, and a method for constructing the equation has been proposed. In the gas region, this equation transforms into the virial equation of state, and in the vicinity of the critical point it satisfies the requirements of the modern large-scale theory of critical phenomena and transforms into the Widom scale equation. On the basis of a single fundamental equation of state in accordance with GOST R 8.614-2018, standard reference data (GSSSD 380-2020) on the density, enthalpy, isobaric heat capacity, isochoric heat capacity, entropy and sound velocity of R1234yf in the temperature range from 230 K to 420 K and pressures from 0.1 MPa to 20 MPa. A comparison of the calculated values of equilibrium properties with the most reliable experimental data obtained in the famous of the world, and tabular data obtained on the basis of the known fundamental equations of state R1234yf. Uncertainties of tabulated data for saturated vapor pressure, density, enthalpy, isobaric heat capacity, isochoric heat capacity, entropy and speed of sound of 2,3,3,3-tetrafl uoropropene are estimated – standard relative uncertainties by type A, B, total standard relative and expanded uncertainties. The results obtained in the work show that the proposed unified fundamental equation of state adequately describes the equilibrium properties of R1234yf in the range of state parameters stated above.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>стандартные справочные данные</kwd><kwd>2</kwd><kwd>3</kwd><kwd>3</kwd><kwd>3-тетрафторпропен</kwd><kwd>термодинамические свойства</kwd><kwd>фундаментальное уравнение состояния</kwd><kwd>неопределённость</kwd><kwd>энергия Гельмгольца</kwd></kwd-group><kwd-group xml:lang="en"><kwd>standard reference data</kwd><kwd>2</kwd><kwd>3</kwd><kwd>3</kwd><kwd>3-tetrafl uoropropene</kwd><kwd>thermodynamic properties</kwd><kwd>fundamental equation of state</kwd><kwd>uncertainty</kwd><kwd>Helmholtz energy</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">Montreal protocol on substances that deplete the ozone layer. 2010 report of the refrigeration, air conditioning and heat pumps technical options committee, 2010 assessment, pp. 4–14.</mixed-citation><mixed-citation xml:lang="en">Montreal protocol on substances that deplete the ozone layer. 2010 report of the refrigeration, air conditioning and heat pumps technical options committee, 2010 assessment, pp. 4–14.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Kano Y., Kayukawa Y., Fujii K., Sato H., Int. 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