Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe
An investigation on enhancement of heat transfer is carried out for a double pipe heat exchanger in which the outer wall of the inner pipe is provided with circumferential labyrinth passages. Rectangular and triangular cavities with fixed labyrinth tooth thickness, height, and pitch are considered a...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2023-03-01
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| Series: | Acta Polytechnica |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/8331 |
| _version_ | 1797866336065421312 |
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| author | Balasubramanian Vijayaragavan Suyambu Pandian Asok Chandrasekar Ramalekshmi Shakthi Ganesh |
| author_facet | Balasubramanian Vijayaragavan Suyambu Pandian Asok Chandrasekar Ramalekshmi Shakthi Ganesh |
| author_sort | Balasubramanian Vijayaragavan |
| collection | DOAJ |
| description | An investigation on enhancement of heat transfer is carried out for a double pipe heat exchanger in which the outer wall of the inner pipe is provided with circumferential labyrinth passages. Rectangular and triangular cavities with fixed labyrinth tooth thickness, height, and pitch are considered and the effect of added labyrinth structures on the heat transfer characteristics is discussed. A two-dimensional steady numerical simulation is carried out using ANSYS-FLUENT software. The flow Reynolds number equals to 20 000 and 43 000 for the hot and cold fluids, respectively, while other fluid properties are constant. From the numerical analysis carried out in this work, it is identified that the added labyrinth passages in the heat exchange surface improve the heat transfer rate and can reduce the length of the heat exchanger. Numerical predictions agree well with the results obtained from the experiment conducted. |
| first_indexed | 2024-04-09T23:22:31Z |
| format | Article |
| id | doaj.art-f7a821565494446fbbd34d2910e3265c |
| institution | Directory Open Access Journal |
| issn | 1805-2363 |
| language | English |
| last_indexed | 2024-04-09T23:22:31Z |
| publishDate | 2023-03-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj.art-f7a821565494446fbbd34d2910e3265c2023-03-21T15:41:11ZengCTU Central LibraryActa Polytechnica1805-23632023-03-01631657410.14311/AP.2023.63.00655571Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipeBalasubramanian Vijayaragavan0Suyambu Pandian Asok1Chandrasekar Ramalekshmi Shakthi Ganesh2Mepco Schlenk Engineering College, Department of Mechanical Engineering, Sivakasi, Virudhunagar District- 626005, Tamilnadu, IndiaMepco Schlenk Engineering College, Department of Mechanical Engineering, Sivakasi, Virudhunagar District- 626005, Tamilnadu, IndiaMepco Schlenk Engineering College, Department of Mechanical Engineering, Sivakasi, Virudhunagar District- 626005, Tamilnadu, IndiaAn investigation on enhancement of heat transfer is carried out for a double pipe heat exchanger in which the outer wall of the inner pipe is provided with circumferential labyrinth passages. Rectangular and triangular cavities with fixed labyrinth tooth thickness, height, and pitch are considered and the effect of added labyrinth structures on the heat transfer characteristics is discussed. A two-dimensional steady numerical simulation is carried out using ANSYS-FLUENT software. The flow Reynolds number equals to 20 000 and 43 000 for the hot and cold fluids, respectively, while other fluid properties are constant. From the numerical analysis carried out in this work, it is identified that the added labyrinth passages in the heat exchange surface improve the heat transfer rate and can reduce the length of the heat exchanger. Numerical predictions agree well with the results obtained from the experiment conducted.https://ojs.cvut.cz/ojs/index.php/ap/article/view/8331double pipe heat exchangerheat transfernumerical analysisrectangular cavity |
| spellingShingle | Balasubramanian Vijayaragavan Suyambu Pandian Asok Chandrasekar Ramalekshmi Shakthi Ganesh Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe Acta Polytechnica double pipe heat exchanger heat transfer numerical analysis rectangular cavity |
| title | Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| title_full | Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| title_fullStr | Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| title_full_unstemmed | Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| title_short | Heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| title_sort | heat transfer characteristics of double pipe heat exchanger having externally enhanced inner pipe |
| topic | double pipe heat exchanger heat transfer numerical analysis rectangular cavity |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/8331 |
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