ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ
The aim of this work is to analyze the heat transfer, hydraulic resistance and thermo-hydraulic performance of a new type of heat exchange channels made by additive technology. The main factors affecting the quality of products and determining the heat transfer and hydraulic resistance of the channe...
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| Дата: | 2023 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Institute of Engineering Thermophysics of NAS of Ukraine
2023
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| Онлайн доступ: | https://ihe.nas.gov.ua/index.php/journal/article/view/531 |
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| Назва журналу: | Thermophysics and Thermal Power Engineering |
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Thermophysics and Thermal Power Engineering| _version_ | 1856543849368780800 |
|---|---|
| author | Khalatov, А.А. Borisov, І.І. Kulishov, S.B. |
| author_facet | Khalatov, А.А. Borisov, І.І. Kulishov, S.B. |
| author_sort | Khalatov, А.А. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2023-12-05T15:00:58Z |
| description | The aim of this work is to analyze the heat transfer, hydraulic resistance and thermo-hydraulic performance of a new type of heat exchange channels made by additive technology. The main factors affecting the quality of products and determining the heat transfer and hydraulic resistance of the channels are noted. Well-known ratios for calculating hydraulic resistance and heat transfer are not suitable for such high roughness. Data on the AT resistance coefficient of the channels show that even at low Reynolds numbers there is a contribution of roughness. With increasing roughness, the intensification of resistance and heat exchange increases. The transition occurs at 700 < Re < 2000. Comparison of data on heat transfer augmentation and increase of hydraulic losses, as well as their thermo-hydraulic characteristics has been carried out. The hydraulic resistance coefficient of AT channels is significantly higher than the resistance coefficient of smooth channels. Heat transfer augmentation in wave-shaped channels is 2 times higher than augmentation in straight channels. Channels with pin fins allow to achieve a very high heat transfer augmentation (up to 8). Channels with internal grids provide high intensification, but have the highest hydraulic losses. The dependence of the Reynolds analogy factor on the resistance increase factor showed that the straight channels of all geometric forms fit on one dependence closed to the lower boundary line, and have a low hydraulic resistance. Data on channels with pin fins have a large spread. A number of points are above the upper boundary line, which refers to channels with low surface roughness. |
| first_indexed | 2025-12-17T13:55:56Z |
| format | Article |
| id | oai:ojs2.ihenasgovua.s43.yourdomain.com.ua:article-531 |
| institution | Thermophysics and Thermal Power Engineering |
| language | Ukrainian |
| last_indexed | 2025-12-17T13:55:56Z |
| publishDate | 2023 |
| publisher | Institute of Engineering Thermophysics of NAS of Ukraine |
| record_format | ojs |
| spelling | oai:ojs2.ihenasgovua.s43.yourdomain.com.ua:article-5312023-12-05T15:00:58Z THERMO-HYDRAULIC CHARACTERISTICS OF ADDITIVELY MANUFACTURED MINI-CHANNELS ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ Khalatov, А.А. Borisov, І.І. Kulishov, S.B. The aim of this work is to analyze the heat transfer, hydraulic resistance and thermo-hydraulic performance of a new type of heat exchange channels made by additive technology. The main factors affecting the quality of products and determining the heat transfer and hydraulic resistance of the channels are noted. Well-known ratios for calculating hydraulic resistance and heat transfer are not suitable for such high roughness. Data on the AT resistance coefficient of the channels show that even at low Reynolds numbers there is a contribution of roughness. With increasing roughness, the intensification of resistance and heat exchange increases. The transition occurs at 700 < Re < 2000. Comparison of data on heat transfer augmentation and increase of hydraulic losses, as well as their thermo-hydraulic characteristics has been carried out. The hydraulic resistance coefficient of AT channels is significantly higher than the resistance coefficient of smooth channels. Heat transfer augmentation in wave-shaped channels is 2 times higher than augmentation in straight channels. Channels with pin fins allow to achieve a very high heat transfer augmentation (up to 8). Channels with internal grids provide high intensification, but have the highest hydraulic losses. The dependence of the Reynolds analogy factor on the resistance increase factor showed that the straight channels of all geometric forms fit on one dependence closed to the lower boundary line, and have a low hydraulic resistance. Data on channels with pin fins have a large spread. A number of points are above the upper boundary line, which refers to channels with low surface roughness. Розглянуті особливості теплообміну та гідравлічного опору міні-каналів, виконаних за допомогою адитивних технологій, проведено порівняння їх теплогідравлічних характеристик Institute of Engineering Thermophysics of NAS of Ukraine 2023-06-11 Article Article application/pdf https://ihe.nas.gov.ua/index.php/journal/article/view/531 10.31472/ttpe.2.2023.3 Thermophysics and Thermal Power Engineering; Vol 45 No 2 (2023): Thermophysics and Thermal Power Engineering; 24-33 Теплофизика и Теплоэнергетика; Vol 45 No 2 (2023): Thermophysics and Thermal Power Engineering; 24-33 Теплофізика та Теплоенергетика; Vol 45 No 2 (2023): Thermophysics and Thermal Power Engineering; 24-33 2663-7235 uk https://ihe.nas.gov.ua/index.php/journal/article/view/531/455 https://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Khalatov, А.А. Borisov, І.І. Kulishov, S.B. ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title | ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title_alt | THERMO-HYDRAULIC CHARACTERISTICS OF ADDITIVELY MANUFACTURED MINI-CHANNELS |
| title_full | ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title_fullStr | ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title_full_unstemmed | ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title_short | ТЕПЛОГІДРАВЛІЧНІ ХАРАКТЕРИСТИКИ МІНІ-КАНАЛІВ, ВИКОНАНИХ ЗА ДОПОМОГОЮ АДИТИВНОЇ ТЕХНОЛОГІЇ |
| title_sort | теплогідравлічні характеристики міні-каналів, виконаних за допомогою адитивної технології |
| url | https://ihe.nas.gov.ua/index.php/journal/article/view/531 |
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