Influence of furnace tube shape on thermal strain of fire-tube boilers
Abstract
The aim of this paper is to use numerical analysis and fine element method-FEM to investigate the influence of furnace tube shape on the thermal strain of fire-tube boilers. Thermal stresses in corrugated furnace tubes of different shape, i.e. with different corrugation pitch and depth, were analysed first. It was demonstrated that the thermal stresses in corrugated furnace tube are significantly reduced with the increase of corrugation depth. Than deformations and stresses in the structure of a fire-tube boiler were analysed in a real operating condition, for the cases of installed plain furnace tube and corrugated furnace tubes with different shapes. It was concluded that in this fire-tube boiler, which is of larger steam capacity, the corrugated furnace tube must be installed, as well as that the maximal stress in the construction is reduced by the installation of the furnace tube with greater corrugation depth. The analysis of stresses due to pressure and thermal loads pointed out ...that thermal stresses are not lower-order stresses in comparison to stresses due to pressure loads, so they must be taken into consideration for boiler strength analysis.
Keywords:
thermal load / stress / pressure / fire-tube boiler / finite element analysis / deformation / corrugated furnace tubeSource:
Thermal Science, 2014, 18, S39-S47Publisher:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
Funding / projects:
- Developed new methods for diagnosis and examination mechanical structures (RS-MESTD-Technological Development (TD or TR)-35040)
- Pressure equipment integrity under simultaneous effect of fatigue loading and temperature (RS-MESTD-Technological Development (TD or TR)-35011)
DOI: 10.2298/TSCI130317172G
ISSN: 0354-9836
WoS: 000338690200006
Scopus: 2-s2.0-84907051973
Collections
Institution/Community
Inovacioni centarTY - JOUR AU - Gaćeša, Branka AU - Maneski, Taško AU - Milošević-Mitić, Vesna AU - Nestorović, Miodrag S. AU - Petrović, Ana PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1901 AB - The aim of this paper is to use numerical analysis and fine element method-FEM to investigate the influence of furnace tube shape on the thermal strain of fire-tube boilers. Thermal stresses in corrugated furnace tubes of different shape, i.e. with different corrugation pitch and depth, were analysed first. It was demonstrated that the thermal stresses in corrugated furnace tube are significantly reduced with the increase of corrugation depth. Than deformations and stresses in the structure of a fire-tube boiler were analysed in a real operating condition, for the cases of installed plain furnace tube and corrugated furnace tubes with different shapes. It was concluded that in this fire-tube boiler, which is of larger steam capacity, the corrugated furnace tube must be installed, as well as that the maximal stress in the construction is reduced by the installation of the furnace tube with greater corrugation depth. The analysis of stresses due to pressure and thermal loads pointed out that thermal stresses are not lower-order stresses in comparison to stresses due to pressure loads, so they must be taken into consideration for boiler strength analysis. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Influence of furnace tube shape on thermal strain of fire-tube boilers EP - S47 SP - S39 VL - 18 DO - 10.2298/TSCI130317172G ER -
@article{ author = "Gaćeša, Branka and Maneski, Taško and Milošević-Mitić, Vesna and Nestorović, Miodrag S. and Petrović, Ana", year = "2014", abstract = "The aim of this paper is to use numerical analysis and fine element method-FEM to investigate the influence of furnace tube shape on the thermal strain of fire-tube boilers. Thermal stresses in corrugated furnace tubes of different shape, i.e. with different corrugation pitch and depth, were analysed first. It was demonstrated that the thermal stresses in corrugated furnace tube are significantly reduced with the increase of corrugation depth. Than deformations and stresses in the structure of a fire-tube boiler were analysed in a real operating condition, for the cases of installed plain furnace tube and corrugated furnace tubes with different shapes. It was concluded that in this fire-tube boiler, which is of larger steam capacity, the corrugated furnace tube must be installed, as well as that the maximal stress in the construction is reduced by the installation of the furnace tube with greater corrugation depth. The analysis of stresses due to pressure and thermal loads pointed out that thermal stresses are not lower-order stresses in comparison to stresses due to pressure loads, so they must be taken into consideration for boiler strength analysis.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Influence of furnace tube shape on thermal strain of fire-tube boilers", pages = "S47-S39", volume = "18", doi = "10.2298/TSCI130317172G" }
Gaćeša, B., Maneski, T., Milošević-Mitić, V., Nestorović, M. S.,& Petrović, A.. (2014). Influence of furnace tube shape on thermal strain of fire-tube boilers. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 18, S39-S47. https://doi.org/10.2298/TSCI130317172G
Gaćeša B, Maneski T, Milošević-Mitić V, Nestorović MS, Petrović A. Influence of furnace tube shape on thermal strain of fire-tube boilers. in Thermal Science. 2014;18:S39-S47. doi:10.2298/TSCI130317172G .
Gaćeša, Branka, Maneski, Taško, Milošević-Mitić, Vesna, Nestorović, Miodrag S., Petrović, Ana, "Influence of furnace tube shape on thermal strain of fire-tube boilers" in Thermal Science, 18 (2014):S39-S47, https://doi.org/10.2298/TSCI130317172G . .