Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers
Heat exchangers are of key importance in overall performance and commercialization of thermoacoustic devices. The main goal in designing efficient thermoacoustic heat exchangers (TAHXs) is the achievement of the required heat transfer rate in conjunction with low acoustic energy dissipation. A numer...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-08-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/18/8/301 |
| _version_ | 1811298440980725760 |
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| author | Mohammad Gholamrezaei Kaveh Ghorbanian |
| author_facet | Mohammad Gholamrezaei Kaveh Ghorbanian |
| author_sort | Mohammad Gholamrezaei |
| collection | DOAJ |
| description | Heat exchangers are of key importance in overall performance and commercialization of thermoacoustic devices. The main goal in designing efficient thermoacoustic heat exchangers (TAHXs) is the achievement of the required heat transfer rate in conjunction with low acoustic energy dissipation. A numerical investigation is performed to examine the effects of geometry on both the viscous and thermal-relaxation losses of shell-and-tube TAHXs. Further, the impact of the drive ratio as well as the temperature difference between the oscillating gas and the TAHX tube wall on acoustic energy dissipation are explored. While viscous losses decrease with d i / δ κ , thermal-relaxation losses increase; however, thermal relaxation effects mainly determine the acoustic power dissipated in TAHXs. The results indicate the existence of an optimal configuration for which the acoustic energy dissipation minimizes depending on both the TAHX metal temperature and the drive ratio. |
| first_indexed | 2024-04-13T06:19:20Z |
| format | Article |
| id | doaj.art-c372343f96b74321bbb9859fabfad154 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-13T06:19:20Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-c372343f96b74321bbb9859fabfad1542022-12-22T02:58:42ZengMDPI AGEntropy1099-43002016-08-0118830110.3390/e18080301e18080301Thermal Analysis of Shell-and-Tube Thermoacoustic Heat ExchangersMohammad Gholamrezaei0Kaveh Ghorbanian1Department of Aerospace Engineering, Sharif University of Technology, Tehran 11365-8639, IranDepartment of Aerospace Engineering, Sharif University of Technology, Tehran 11365-8639, IranHeat exchangers are of key importance in overall performance and commercialization of thermoacoustic devices. The main goal in designing efficient thermoacoustic heat exchangers (TAHXs) is the achievement of the required heat transfer rate in conjunction with low acoustic energy dissipation. A numerical investigation is performed to examine the effects of geometry on both the viscous and thermal-relaxation losses of shell-and-tube TAHXs. Further, the impact of the drive ratio as well as the temperature difference between the oscillating gas and the TAHX tube wall on acoustic energy dissipation are explored. While viscous losses decrease with d i / δ κ , thermal-relaxation losses increase; however, thermal relaxation effects mainly determine the acoustic power dissipated in TAHXs. The results indicate the existence of an optimal configuration for which the acoustic energy dissipation minimizes depending on both the TAHX metal temperature and the drive ratio.http://www.mdpi.com/1099-4300/18/8/301heat exchangersthermoacousticsshell-and-tubeacoustic energydissipation |
| spellingShingle | Mohammad Gholamrezaei Kaveh Ghorbanian Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers Entropy heat exchangers thermoacoustics shell-and-tube acoustic energy dissipation |
| title | Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers |
| title_full | Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers |
| title_fullStr | Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers |
| title_full_unstemmed | Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers |
| title_short | Thermal Analysis of Shell-and-Tube Thermoacoustic Heat Exchangers |
| title_sort | thermal analysis of shell and tube thermoacoustic heat exchangers |
| topic | heat exchangers thermoacoustics shell-and-tube acoustic energy dissipation |
| url | http://www.mdpi.com/1099-4300/18/8/301 |
| work_keys_str_mv | AT mohammadgholamrezaei thermalanalysisofshellandtubethermoacousticheatexchangers AT kavehghorbanian thermalanalysisofshellandtubethermoacousticheatexchangers |