An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design
The aim of this paper is to present an example of damage to the reheater tubes and conduct the material and numerical analyses to establish the cause of the device failure. Cracks were observed on the first, second, and third tube row. Close to the damaged area, a ferritic structure could be observe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/12/2255 |
| _version_ | 1828154315839111168 |
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| author | Piotr Duda Łukasz Felkowski Adam Zieliński Andrzej Duda |
| author_facet | Piotr Duda Łukasz Felkowski Adam Zieliński Andrzej Duda |
| author_sort | Piotr Duda |
| collection | DOAJ |
| description | The aim of this paper is to present an example of damage to the reheater tubes and conduct the material and numerical analyses to establish the cause of the device failure. Cracks were observed on the first, second, and third tube row. Close to the damaged area, a ferritic structure could be observed with highly degraded bainite areas, characterized by coagulation and coalescence of precipitates. The cause of the damage was analysed using the finite element method (FEM). The big yield of the tube cross-section confirmed that the tube may get damaged during subsequent cycles of the boiler operation, which was also proved by the microstructure testing results. For the reheater under analysis, the tubes have to be lengthened to achieve a reduction in stresses, arising due to thermal loads to values lower than allowable stresses according to Standard EN 13480-3. The modelling results confirmed the correct operation for the upgraded system. |
| first_indexed | 2024-04-11T22:38:05Z |
| format | Article |
| id | doaj.art-e71c522b78064f80991dd13046502ea1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:38:05Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e71c522b78064f80991dd13046502ea12022-12-22T03:59:10ZengMDPI AGEnergies1996-10732019-06-011212225510.3390/en12122255en12122255An Analysis of a Reheater Failure and a Proposal to Upgrade the Device DesignPiotr Duda0Łukasz Felkowski1Adam Zieliński2Andrzej Duda3Institute of Thermal and Process Engineering, Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Kraków, PolandInstitute of Thermal and Process Engineering, Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Kraków, PolandInstitute for Ferrous Metallurgy, ul. K. Miarki 12-14, 44-100 Gliwice, PolandInstitute of Thermal and Process Engineering, Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Kraków, PolandThe aim of this paper is to present an example of damage to the reheater tubes and conduct the material and numerical analyses to establish the cause of the device failure. Cracks were observed on the first, second, and third tube row. Close to the damaged area, a ferritic structure could be observed with highly degraded bainite areas, characterized by coagulation and coalescence of precipitates. The cause of the damage was analysed using the finite element method (FEM). The big yield of the tube cross-section confirmed that the tube may get damaged during subsequent cycles of the boiler operation, which was also proved by the microstructure testing results. For the reheater under analysis, the tubes have to be lengthened to achieve a reduction in stresses, arising due to thermal loads to values lower than allowable stresses according to Standard EN 13480-3. The modelling results confirmed the correct operation for the upgraded system.https://www.mdpi.com/1996-1073/12/12/2255reheaterrupturemicrostructural degradationfailure analysis |
| spellingShingle | Piotr Duda Łukasz Felkowski Adam Zieliński Andrzej Duda An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design Energies reheater rupture microstructural degradation failure analysis |
| title | An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design |
| title_full | An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design |
| title_fullStr | An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design |
| title_full_unstemmed | An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design |
| title_short | An Analysis of a Reheater Failure and a Proposal to Upgrade the Device Design |
| title_sort | analysis of a reheater failure and a proposal to upgrade the device design |
| topic | reheater rupture microstructural degradation failure analysis |
| url | https://www.mdpi.com/1996-1073/12/12/2255 |
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