3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs
With the increase of heat transfer problems in marine vehicles and submerged power stations in oceans, the search for an efficient finned-tube heat exchanger has become particularly important. The purpose of the present investigation is to analyze and compare the thermal exchange and flow characteri...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-06-01
|
| Series: | Journal of Ocean Engineering and Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468013322000407 |
| _version_ | 1827943673493454848 |
|---|---|
| author | Farouk Tahrour Hijaz Ahmad Houari Ameur Tareq Saeed Hanaa Abu-Zinadah Younes Menni |
| author_facet | Farouk Tahrour Hijaz Ahmad Houari Ameur Tareq Saeed Hanaa Abu-Zinadah Younes Menni |
| author_sort | Farouk Tahrour |
| collection | DOAJ |
| description | With the increase of heat transfer problems in marine vehicles and submerged power stations in oceans, the search for an efficient finned-tube heat exchanger has become particularly important. The purpose of the present investigation is to analyze and compare the thermal exchange and flow characteristics between five different fin designs, namely: a concentric circular finned-tube (CCFT), an eccentric circular finned-tube (ECFT), a perforated circular finned-tube (PCFT), a serrated circular finned-tube (SCFT), and a star-shaped finned-tube (S-SFT). The fin design and spacing impact on the thermal-flow performance of a heat exchanger was computed at Reynolds numbers varying from 4,300 to 15,000. From the numerical results, and when the fin spacing has been changed from 2 to 7 mm, an enhancement in the Colburn factor and a reduction in the friction factor and fin performances were observed for all cases under study. Three criteria were checked to select the most efficient fin design: the performance evaluation criterion PEC, the global performance criterion GPC, and the mass global performance criterionMGPC. Whatever the value of Reynolds number, the conventional CCFT provided the lowest performance evaluation criterion PEC, while the SCFT gave the highest amount of PEC. The most significant value of GPC was reached with the ECFT; however, GPC remained almost the same for CCFT, PCFT, SCFT, and S-SFT. In terms of the mass global performance criterion, the S-SFT provides the highest MGpcas compared with the full fins of CCFT (41–73% higher) and ECFT (29–54% higher). Thus, the heat exchanger with S-SFT is recommended to be used in the cooling of offshore energy systems. |
| first_indexed | 2024-03-13T10:18:56Z |
| format | Article |
| id | doaj.art-8b9b47e11ce54b4cb284e047e9e79a0f |
| institution | Directory Open Access Journal |
| issn | 2468-0133 |
| language | English |
| last_indexed | 2024-03-13T10:18:56Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Ocean Engineering and Science |
| spelling | doaj.art-8b9b47e11ce54b4cb284e047e9e79a0f2023-05-21T04:35:19ZengElsevierJournal of Ocean Engineering and Science2468-01332023-06-01832943073D numerical study and comparison of thermal-flow performance of various annular finned-tube designsFarouk Tahrour0Hijaz Ahmad1Houari Ameur2Tareq Saeed3Hanaa Abu-Zinadah4Younes Menni5Department of Physics, Faculty of Sciences, University Mohamed Boudiaf of M'sila, M'sila, AlgeriaNear East University, Operational Research Center in Healthcare, Near East Boulevard, PC: 99138 Nicosia/Mersin 10, Turkey; Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II, 39,00186 Roma, Italy; Corresponding author.Department of Technology, University Centre of Naama – Ahmed Salhi, P.O. Box 66, Naama 45000, AlgeriaNonlinear Analysis and Applied Mathematics Research Group (NAAM), Mathematics Department, King Abdulaziz University, Jeddah 21589, Saudi ArabiaUniversity of Jeddah, College of Science, Department of Statistics, Jeddah, Saudi ArabiaDepartment of Technology, University Centre of Naama – Ahmed Salhi, P.O. Box 66, Naama 45000, AlgeriaWith the increase of heat transfer problems in marine vehicles and submerged power stations in oceans, the search for an efficient finned-tube heat exchanger has become particularly important. The purpose of the present investigation is to analyze and compare the thermal exchange and flow characteristics between five different fin designs, namely: a concentric circular finned-tube (CCFT), an eccentric circular finned-tube (ECFT), a perforated circular finned-tube (PCFT), a serrated circular finned-tube (SCFT), and a star-shaped finned-tube (S-SFT). The fin design and spacing impact on the thermal-flow performance of a heat exchanger was computed at Reynolds numbers varying from 4,300 to 15,000. From the numerical results, and when the fin spacing has been changed from 2 to 7 mm, an enhancement in the Colburn factor and a reduction in the friction factor and fin performances were observed for all cases under study. Three criteria were checked to select the most efficient fin design: the performance evaluation criterion PEC, the global performance criterion GPC, and the mass global performance criterionMGPC. Whatever the value of Reynolds number, the conventional CCFT provided the lowest performance evaluation criterion PEC, while the SCFT gave the highest amount of PEC. The most significant value of GPC was reached with the ECFT; however, GPC remained almost the same for CCFT, PCFT, SCFT, and S-SFT. In terms of the mass global performance criterion, the S-SFT provides the highest MGpcas compared with the full fins of CCFT (41–73% higher) and ECFT (29–54% higher). Thus, the heat exchanger with S-SFT is recommended to be used in the cooling of offshore energy systems.http://www.sciencedirect.com/science/article/pii/S2468013322000407Thermal-flow performanceEccentric finsStar-shaped finsPerforated finsFinned-tube designs |
| spellingShingle | Farouk Tahrour Hijaz Ahmad Houari Ameur Tareq Saeed Hanaa Abu-Zinadah Younes Menni 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs Journal of Ocean Engineering and Science Thermal-flow performance Eccentric fins Star-shaped fins Perforated fins Finned-tube designs |
| title | 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs |
| title_full | 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs |
| title_fullStr | 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs |
| title_full_unstemmed | 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs |
| title_short | 3D numerical study and comparison of thermal-flow performance of various annular finned-tube designs |
| title_sort | 3d numerical study and comparison of thermal flow performance of various annular finned tube designs |
| topic | Thermal-flow performance Eccentric fins Star-shaped fins Perforated fins Finned-tube designs |
| url | http://www.sciencedirect.com/science/article/pii/S2468013322000407 |
| work_keys_str_mv | AT farouktahrour 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns AT hijazahmad 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns AT houariameur 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns AT tareqsaeed 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns AT hanaaabuzinadah 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns AT younesmenni 3dnumericalstudyandcomparisonofthermalflowperformanceofvariousannularfinnedtubedesigns |