Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load
A soft sensor for oxide scales on the steam side of superheater tubes of utility boiler under uneven circumferential loading is proposed for the first time. First finite volume method is employed to simulate oxide scales growth temperature on the steam side of superheater tube. Then appropriate time...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/275340 |
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| author | Qing Wei Li Gui Huan Yao |
| author_facet | Qing Wei Li Gui Huan Yao |
| author_sort | Qing Wei Li |
| collection | DOAJ |
| description | A soft sensor for oxide scales on the steam side of superheater tubes of utility boiler under uneven circumferential loading is proposed for the first time. First finite volume method is employed to simulate oxide scales growth temperature on the steam side of superheater tube. Then appropriate time and spatial intervals are selected to calculate oxide scales thickness along the circumferential direction. On the basis of the oxide scale thickness, the stress of oxide scales is calculated by the finite element method. At last, the oxide scale thickness and stress sensors are established on support vector machine (SMV) optimized by particle swarm optimization (PSO) with time and circumferential angles as inputs and oxide scale thickness and stress as outputs. Temperature and stress calculation methods are validated by the operation data and experimental data, respectively. The soft sensor is applied to the superheater tubes of some power plant. Results show that the soft sensor can give enough accurate results for oxide scale thickness and stress in reasonable time. The forecasting model provides a convenient way for the research of the oxide scale failure. |
| format | Article |
| id | doaj-art-510ce271661745a99c7809fafb93eda1 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-510ce271661745a99c7809fafb93eda12025-02-03T06:42:14ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/275340275340Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential LoadQing Wei Li0Gui Huan Yao1Energy and Environment Department, Southeast University, Si Pai Lou No. 2, Xuan Wu District, Nanjing 210096, ChinaSchool of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing, ChinaA soft sensor for oxide scales on the steam side of superheater tubes of utility boiler under uneven circumferential loading is proposed for the first time. First finite volume method is employed to simulate oxide scales growth temperature on the steam side of superheater tube. Then appropriate time and spatial intervals are selected to calculate oxide scales thickness along the circumferential direction. On the basis of the oxide scale thickness, the stress of oxide scales is calculated by the finite element method. At last, the oxide scale thickness and stress sensors are established on support vector machine (SMV) optimized by particle swarm optimization (PSO) with time and circumferential angles as inputs and oxide scale thickness and stress as outputs. Temperature and stress calculation methods are validated by the operation data and experimental data, respectively. The soft sensor is applied to the superheater tubes of some power plant. Results show that the soft sensor can give enough accurate results for oxide scale thickness and stress in reasonable time. The forecasting model provides a convenient way for the research of the oxide scale failure.http://dx.doi.org/10.1155/2015/275340 |
| spellingShingle | Qing Wei Li Gui Huan Yao Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load Advances in Materials Science and Engineering |
| title | Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load |
| title_full | Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load |
| title_fullStr | Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load |
| title_full_unstemmed | Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load |
| title_short | Soft Sensor for Oxide Scales on the Steam Side of Superheater Tubes under Uneven Circumferential Load |
| title_sort | soft sensor for oxide scales on the steam side of superheater tubes under uneven circumferential load |
| url | http://dx.doi.org/10.1155/2015/275340 |
| work_keys_str_mv | AT qingweili softsensorforoxidescalesonthesteamsideofsuperheatertubesunderunevencircumferentialload AT guihuanyao softsensorforoxidescalesonthesteamsideofsuperheatertubesunderunevencircumferentialload |