ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК
Introduction. To date, heat pump systems are widely used in public utilities for heat supply to buildings. In particular, in the "soil-water" heat pump system, heat is removed from the soil with the help of a soil heat exchanger. The efficiency of its work depends on the intensity of heat...
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| Date: | 2022 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | Ukrainian |
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Institute of Engineering Thermophysics of NAS of Ukraine
2022
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| Online Access: | https://ihe.nas.gov.ua/index.php/journal/article/view/513 |
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| Journal Title: | Thermophysics and Thermal Power Engineering |
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Thermophysics and Thermal Power Engineering| _version_ | 1856543840448544768 |
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| author | Basok, B.I. Davydenko, B.V. Pavlenko, F.M. Novikov, V.G. Koshlak, H.V. |
| author_facet | Basok, B.I. Davydenko, B.V. Pavlenko, F.M. Novikov, V.G. Koshlak, H.V. |
| author_sort | Basok, B.I. |
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| collection | OJS |
| datestamp_date | 2023-12-05T15:00:53Z |
| description | Introduction. To date, heat pump systems are widely used in public utilities for heat supply to buildings. In particular, in the "soil-water" heat pump system, heat is removed from the soil with the help of a soil heat exchanger. The efficiency of its work depends on the intensity of heat transfer through the surface of the heat exchanger. The nature of heat transfer in the soil massif is significantly influenced by the filtration flow of groundwater. This flow can be formed both due to the presence of a temperature gradient in the array, and in the presence of a pressure gradient. In the first case, free convection will occur, and in the second, forced convection, and in many cases both factors may be present in the soil mass. As a result of their action, a groundwater flow is formed in this massif, which in a certain way effects on the mechanism of heat transfer from the soil massif to the heat exchange device.
Results. In this work, numerical simulation of groundwater flow and heat transfer in the soil massif is carried out in the presence of a U-tube vertical soil heat exchanger, which is an element of the heat pump system. For numerical studies, the Darcy–Brinkman-Forchheimer model is used for fluid flow in a porous medium. The influence of the pressure gradient in the soil mass, which causes the movement of groundwater, on the efficiency of the heat exchanger is analyzed. This efficiency is estimated by the amount of heat extracted from the soil. The influence of the dispersion of soil particles on the intensity of heat transfer is also determined. |
| first_indexed | 2025-12-17T13:55:52Z |
| format | Article |
| id | oai:ojs2.ihenasgovua.s43.yourdomain.com.ua:article-513 |
| institution | Thermophysics and Thermal Power Engineering |
| language | Ukrainian |
| last_indexed | 2025-12-17T13:55:52Z |
| publishDate | 2022 |
| publisher | Institute of Engineering Thermophysics of NAS of Ukraine |
| record_format | ojs |
| spelling | oai:ojs2.ihenasgovua.s43.yourdomain.com.ua:article-5132023-12-05T15:00:53Z HEAT TRANSFER AND HYDRODYNAMICS OF FILTRATION IN THE SOIL - HEAT EXCHANGER SYSTEM ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК Basok, B.I. Davydenko, B.V. Pavlenko, F.M. Novikov, V.G. Koshlak, H.V. Introduction. To date, heat pump systems are widely used in public utilities for heat supply to buildings. In particular, in the "soil-water" heat pump system, heat is removed from the soil with the help of a soil heat exchanger. The efficiency of its work depends on the intensity of heat transfer through the surface of the heat exchanger. The nature of heat transfer in the soil massif is significantly influenced by the filtration flow of groundwater. This flow can be formed both due to the presence of a temperature gradient in the array, and in the presence of a pressure gradient. In the first case, free convection will occur, and in the second, forced convection, and in many cases both factors may be present in the soil mass. As a result of their action, a groundwater flow is formed in this massif, which in a certain way effects on the mechanism of heat transfer from the soil massif to the heat exchange device. Results. In this work, numerical simulation of groundwater flow and heat transfer in the soil massif is carried out in the presence of a U-tube vertical soil heat exchanger, which is an element of the heat pump system. For numerical studies, the Darcy–Brinkman-Forchheimer model is used for fluid flow in a porous medium. The influence of the pressure gradient in the soil mass, which causes the movement of groundwater, on the efficiency of the heat exchanger is analyzed. This efficiency is estimated by the amount of heat extracted from the soil. The influence of the dispersion of soil particles on the intensity of heat transfer is also determined. Методом чисельного моделювання досліджено процес теплопередачі від ґрунтового масиву до теплоносія, що циркулює в U-подібному вертикальному ґрунтовому теплообміннику. Чисельні дослідження виконуються шляхом скінчено-різницевого розв'язання системи рівнянь, що описують фільтраційну течію в пористому середовищі, та рівнянь перенесення теплоти в ґрунтовому масиві і в каналі теплообмінника. Визначено вплив градієнта тиску в ґрунтовому масиві, що викликає фільтраційну течію ґрунтових вод, та діаметра частинок ґрунту на гідродинаміку фільтраційної течії та теплову ефективність теплообмінника. Institute of Engineering Thermophysics of NAS of Ukraine 2022-12-21 Article Article application/pdf https://ihe.nas.gov.ua/index.php/journal/article/view/513 Thermophysics and Thermal Power Engineering; Vol 44 No 4 (2022): Thermophysics and Thermal Power Engineering; 60-67 Теплофизика и Теплоэнергетика; Vol 44 No 4 (2022): Thermophysics and Thermal Power Engineering; 60-67 Теплофізика та Теплоенергетика; Vol 44 No 4 (2022): Thermophysics and Thermal Power Engineering; 60-67 2663-7235 uk https://ihe.nas.gov.ua/index.php/journal/article/view/513/437 https://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Basok, B.I. Davydenko, B.V. Pavlenko, F.M. Novikov, V.G. Koshlak, H.V. ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title | ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title_alt | HEAT TRANSFER AND HYDRODYNAMICS OF FILTRATION IN THE SOIL - HEAT EXCHANGER SYSTEM |
| title_full | ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title_fullStr | ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title_full_unstemmed | ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title_short | ТЕПЛОПЕРЕДАЧА І ГІДРОДИНАМІКА ФІЛЬТРАЦІЇ В СИСТЕМІ ҐРУНТ – ТЕПЛООБМІННИК |
| title_sort | теплопередача і гідродинаміка фільтрації в системі ґрунт – теплообмінник |
| url | https://ihe.nas.gov.ua/index.php/journal/article/view/513 |
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