Thermal load non-uniformity estimation for superheater tube bundle damage evaluation
Industrial boiler damage is a common phenomenon encountered in boiler operation which usually lasts several decades. Since boiler shutdown may be required because of localized failures, it is crucial to predict the most vulnerable parts. If damage occurs, it is necessary to perform root cause analys...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | MATEC Web of Conferences |
| Subjects: | |
| Online Access: | https://doi.org/10.1051/matecconf/201815702033 |
| _version_ | 1818654808925536256 |
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| author | Naď Martin Jegla Zdeněk Létal Tomáš Lošák Pavel Buzík Jiří |
| author_facet | Naď Martin Jegla Zdeněk Létal Tomáš Lošák Pavel Buzík Jiří |
| author_sort | Naď Martin |
| collection | DOAJ |
| description | Industrial boiler damage is a common phenomenon encountered in boiler operation which usually lasts several decades. Since boiler shutdown may be required because of localized failures, it is crucial to predict the most vulnerable parts. If damage occurs, it is necessary to perform root cause analysis and devise corrective measures (repairs, design modifications, etc.). Boiler tube bundles, such as those in superheaters, preheaters and reheaters, are the most exposed and often the most damaged boiler parts. Both short-term and long-term overheating are common causes of tube failures. In these cases, the design temperatures are exceeded, which often results in decrease of remaining creep life. Advanced models for damage evaluation require temperature history, which is available only in rare cases when it has been measured and recorded for the whole service life. However, in most cases it is necessary to estimate the temperature history from available operation history data (inlet and outlet pressures and temperatures etc.). The task may be very challenging because of the combination of complex flow behaviour in the flue gas domain and heat transfer phenomena. This paper focuses on estimating thermal load non-uniformity on superheater tubes via Computational Fluid Dynamics (CFD) simulation of flue gas flow including heat transfer within the domain consisting of a furnace and a part of the first stage of the boiler. |
| first_indexed | 2024-12-17T02:59:41Z |
| format | Article |
| id | doaj.art-a54af535fe404850855306b9c75d688e |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-17T02:59:41Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-a54af535fe404850855306b9c75d688e2022-12-21T22:06:07ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-011570203310.1051/matecconf/201815702033matecconf_mms2018_02033Thermal load non-uniformity estimation for superheater tube bundle damage evaluationNaď MartinJegla ZdeněkLétal TomášLošák PavelBuzík JiříIndustrial boiler damage is a common phenomenon encountered in boiler operation which usually lasts several decades. Since boiler shutdown may be required because of localized failures, it is crucial to predict the most vulnerable parts. If damage occurs, it is necessary to perform root cause analysis and devise corrective measures (repairs, design modifications, etc.). Boiler tube bundles, such as those in superheaters, preheaters and reheaters, are the most exposed and often the most damaged boiler parts. Both short-term and long-term overheating are common causes of tube failures. In these cases, the design temperatures are exceeded, which often results in decrease of remaining creep life. Advanced models for damage evaluation require temperature history, which is available only in rare cases when it has been measured and recorded for the whole service life. However, in most cases it is necessary to estimate the temperature history from available operation history data (inlet and outlet pressures and temperatures etc.). The task may be very challenging because of the combination of complex flow behaviour in the flue gas domain and heat transfer phenomena. This paper focuses on estimating thermal load non-uniformity on superheater tubes via Computational Fluid Dynamics (CFD) simulation of flue gas flow including heat transfer within the domain consisting of a furnace and a part of the first stage of the boiler.https://doi.org/10.1051/matecconf/201815702033boiler damagesuperheater tubesthermal load non-uniformityComputational Fluid Dynamics (CFD) |
| spellingShingle | Naď Martin Jegla Zdeněk Létal Tomáš Lošák Pavel Buzík Jiří Thermal load non-uniformity estimation for superheater tube bundle damage evaluation MATEC Web of Conferences boiler damage superheater tubes thermal load non-uniformity Computational Fluid Dynamics (CFD) |
| title | Thermal load non-uniformity estimation for superheater tube bundle damage evaluation |
| title_full | Thermal load non-uniformity estimation for superheater tube bundle damage evaluation |
| title_fullStr | Thermal load non-uniformity estimation for superheater tube bundle damage evaluation |
| title_full_unstemmed | Thermal load non-uniformity estimation for superheater tube bundle damage evaluation |
| title_short | Thermal load non-uniformity estimation for superheater tube bundle damage evaluation |
| title_sort | thermal load non uniformity estimation for superheater tube bundle damage evaluation |
| topic | boiler damage superheater tubes thermal load non-uniformity Computational Fluid Dynamics (CFD) |
| url | https://doi.org/10.1051/matecconf/201815702033 |
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