Features of refrigeration screw compressor operation at ambient temperature decrease
With a decrease in ambient temperature, the heat gain on the refrigeration machine and condensation pressure decrease, which requires a decrease in cooling capacity and geometric compression ratio of the screw compressor. A condensation pressure decrease below a certain value disrupts the stable...
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| Format: | Article |
| Language: | English |
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Omsk State Technical University, Federal State Autonomous Educational Institution of Higher Education
2020-10-01
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| Series: | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение" |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/%D0%A2.%204,%20%E2%84%96%203%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/9-14%20%D0%9D%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%20%D0%90.%20%D0%9D.,%20%D0%A8%D0%B0%D0%BF%D0%BE%D1%88%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0%20%D0%9C..pdf |
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| _version_ | 1832574013362143232 |
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| author | A. N. Noskov M. Shaposhnikova |
| author_facet | A. N. Noskov M. Shaposhnikova |
| author_sort | A. N. Noskov |
| collection | DOAJ |
| description | With a decrease in ambient temperature, the heat gain on the refrigeration machine and condensation
pressure decrease, which requires a decrease in cooling capacity and geometric compression ratio of
the screw compressor. A condensation pressure decrease below a certain value disrupts the stable
operation of throttling devices. The article describes the operation scheme of the refrigeration machine
with a screw compressor and a liquid pump before the throttling devices, which allows it to work at
a decreased condensation pressure. The dependences of changes in net efficiency, cooling capacity,
power consumption and cooling coefficient at full and partial capacity with co-regulation of cooling
capacity and geometric compression ratio are given. The experimental and calculated characteristics of
a screw compressor operating with R22 freon are used |
| format | Article |
| id | doaj-art-0871f78a223d4850a67246cbb5d84e75 |
| institution | Kabale University |
| issn | 2588-0373 2587-764X |
| language | English |
| publishDate | 2020-10-01 |
| publisher | Omsk State Technical University, Federal State Autonomous Educational Institution of Higher Education |
| record_format | Article |
| series | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение" |
| spelling | doaj-art-0871f78a223d4850a67246cbb5d84e752025-02-02T01:21:51ZengOmsk State Technical University, Federal State Autonomous Educational Institution of Higher EducationОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"2588-03732587-764X2020-10-014391410.25206/2588-0373-2020-4-3-9-14Features of refrigeration screw compressor operation at ambient temperature decreaseA. N. Noskov0https://orcid.org/0000-0002-5632-0842M. Shaposhnikova1ITMO UniversityITMO UniversityWith a decrease in ambient temperature, the heat gain on the refrigeration machine and condensation pressure decrease, which requires a decrease in cooling capacity and geometric compression ratio of the screw compressor. A condensation pressure decrease below a certain value disrupts the stable operation of throttling devices. The article describes the operation scheme of the refrigeration machine with a screw compressor and a liquid pump before the throttling devices, which allows it to work at a decreased condensation pressure. The dependences of changes in net efficiency, cooling capacity, power consumption and cooling coefficient at full and partial capacity with co-regulation of cooling capacity and geometric compression ratio are given. The experimental and calculated characteristics of a screw compressor operating with R22 freon are usedhttps://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/%D0%A2.%204,%20%E2%84%96%203%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/9-14%20%D0%9D%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%20%D0%90.%20%D0%9D.,%20%D0%A8%D0%B0%D0%BF%D0%BE%D1%88%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0%20%D0%9C..pdfoil-flooded screw compressorcondensation temperature decreaseco-regulation of cooling capacity and geometric compression ratioliquid pump before throttling devices |
| spellingShingle | A. N. Noskov M. Shaposhnikova Features of refrigeration screw compressor operation at ambient temperature decrease Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение" oil-flooded screw compressor condensation temperature decrease co-regulation of cooling capacity and geometric compression ratio liquid pump before throttling devices |
| title | Features of refrigeration screw compressor operation at ambient temperature decrease |
| title_full | Features of refrigeration screw compressor operation at ambient temperature decrease |
| title_fullStr | Features of refrigeration screw compressor operation at ambient temperature decrease |
| title_full_unstemmed | Features of refrigeration screw compressor operation at ambient temperature decrease |
| title_short | Features of refrigeration screw compressor operation at ambient temperature decrease |
| title_sort | features of refrigeration screw compressor operation at ambient temperature decrease |
| topic | oil-flooded screw compressor condensation temperature decrease co-regulation of cooling capacity and geometric compression ratio liquid pump before throttling devices |
| url | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/%D0%A2.%204,%20%E2%84%96%203%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/9-14%20%D0%9D%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%20%D0%90.%20%D0%9D.,%20%D0%A8%D0%B0%D0%BF%D0%BE%D1%88%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0%20%D0%9C..pdf |
| work_keys_str_mv | AT annoskov featuresofrefrigerationscrewcompressoroperationatambienttemperaturedecrease AT mshaposhnikova featuresofrefrigerationscrewcompressoroperationatambienttemperaturedecrease |