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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">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2022-24-2-14-23</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-2208</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>ЭНЕРГЕТИЧЕСКИЕ СИСТЕМЫ И КОМПЛЕКСЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENERGY SYSTEMS AND COMPLEXES</subject></subj-group></article-categories><title-group><article-title>Повышение эффективности котельной при использовании винтовых расширительных машин</article-title><trans-title-group xml:lang="en"><trans-title>Increasing the efficiency of the boiler house using screw expansion machines</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>Ротач</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Rotach</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ротач Рита Рустемовна – аспирант.</p><p>Казань</p></bio><bio xml:lang="en"><p>Rita R. Rotach – graduate student.</p><p>Kazan</p></bio><email xlink:type="simple">rita-nurkaeva@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>Ваньков</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vankov</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ваньков Юрий Витальевич – доктор технических наук, профессор, заведующий кафедрой «Промышленная теплоэнергетика и системы теплоснабжения» (ПТЭ).</p><p>Казань</p></bio><bio xml:lang="en"><p>Yurii V. Vankov – doctor of technical sciences, professor, Department of Industrial heat power and heat supply systems.</p><p>Kazan</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>12</day><month>06</month><year>2022</year></pub-date><volume>24</volume><issue>2</issue><fpage>14</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ротач Р.Р., Ваньков Ю.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ротач Р.Р., Ваньков Ю.В.</copyright-holder><copyright-holder xml:lang="en">Rotach R.R., Vankov Y.V.</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://www.energyret.ru/jour/article/view/2208">https://www.energyret.ru/jour/article/view/2208</self-uri><abstract><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Повышение эффективности работы котельной. Разработка схемы внедрения винтовых расширительных машин (ВРМ) в тепловую схему котельной. Расчет основных технических характеристик ВРМ и сетевых подогревателей. Расчет экономического эффекта и оценка целесообразности применения энергосберегающих технологий на промышленном предприятии.</p></sec><sec><title>МЕТОДЫ</title><p>МЕТОДЫ. В работе использованы методы вычислительной математики, теории тепломассообмена, методы технико-экономических расчетов в энергетике, термодинамического анализа энергоустановок.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. В статье приведен вариант повышения эффективности работы котельного цеха в г. Нефтекамск путем включения в работу паровых котлов ДКВР, стоящих на консервации, и внедрения винтовых расширительных машин. Предлагается в неотопительный период (апрель – сентябрь) включать паровые котлы для выработки пара. Пар будет проходить через ВРМ, понижая свое давление до необходимого для сетевых подогревателей для последующего подогрева воды на горячее водоснабжение. При этом на генераторах ВРМ будет вырабатываться электроэнергия, которая будет передаваться на шины собственных нужд котельной. По результатам расчетов, к установке было выбрано две ВРМ мощность 700 кВт каждая, а также три сетевых подогревателя. При рассматриваемом включении дополнительных паровых котлов и ВРМ в неотопительный период года, выработанная электроэнергия полностью покроет затраты на собственные нужды котельной. Срок окупаемости проекта составит 5 лет.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Результаты технико-экономических расчетов показывают целесообразность внедрения ВРМ в тепловую схему котельной как энергосберегающее мероприятие.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>THE PURPOSE</title><p>THE PURPOSE. Improving the efficiency of the boiler house. Development of a scheme for the introduction of screw expansion machines (SEM) into the thermal scheme of a boiler house. Calculation of the main technical characteristics of SEM and network heaters. Calculation of the economic effect and assessment of the feasibility of using energy-saving technologies in an industrial enterprise.</p></sec><sec><title>METHODS</title><p>METHODS. The work uses methods of computational mathematics, the theory of heat and mass transfer, methods of technical and economic calculations in the energy sector, and thermodynamic analysis of power plants.</p></sec><sec><title>RESULTS</title><p>RESULTS. The article presents a variant of improving the efficiency of the boiler shop in Neftekamsk by putting into operation the steam boilers DDVWT, which are mothballed, and introducing screw expansion machines. It is proposed in the non-heating period (April - September) to turn on steam boilers to generate steam. The steam will pass through the SEM, lowering its pressure to that required for network heaters for subsequent heating of water for hot water supply. At the same time, electricity will be generated on the SEM generators, which will be transmitted to the auxiliary tires of the boiler house. According to the results of calculations, two SEM with a capacity of 700 kW each, as well as three network heaters, were selected for the installation. With the considered inclusion of additional steam boilers and SEM in the non-heating period of the year, the generated electricity will fully cover the costs for the auxiliary needs of the boiler house. The payback period of the project will be 5 years.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION. The results of technical and economic calculations show the feasibility of introducing SEM into the thermal scheme of the boiler house as an energy-saving measure.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>винтовая расширительная машина</kwd><kwd>котельная</kwd><kwd>паровой котел</kwd><kwd>выработка электроэнергии</kwd><kwd>собственные нужды котельной</kwd><kwd>энергосбережение</kwd><kwd>когенерация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>screw expansion machine</kwd><kwd>boiler room</kwd><kwd>steam boiler</kwd><kwd>power generation</kwd><kwd>own needs of the boiler room</kwd><kwd>energy saving</kwd><kwd>cogeneration</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">Клименко А.В., Агабабов В.С., Рогова А.А., Тидеман П.А. 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