A mathematical model of the double-pipe system with TBCs application
Authors:
- Mariusz Granda,
- Marcin Trojan
Abstract
Following Rankine's cycle efficiency, steam with ever-higher parameters is used to improve the efficiency of advanced ultra-supercritical power plants. The high steam parameters require the use of expensive high-alloy steels. Therefore, design concepts with reduced investment costs are more and more popular. In the power industry, the use of thermal barrier coatings to protect components exposed to high temperatures is becoming ever more common. The innovative concept is a double-pipe system with a thermal barrier that provides insulation for the primary pipe, in which ultra-supercritical steam flows. On the outside, the pipe is cooled by lower performance steam. The following paper presents a two-dimensional mathematical model of the proposed solution. A set of heat transfer equations allows the determination of the temperature field in the steady and transient-state operation of such a system. The numerical model is compared with the CFD one. The temperature gradient in the inner pipe wall with and without coating was determined. In addition, the response of the wall temperature to the step-change of the steam temperature was investigated. The paper shows that the use of TBCs allows reducing high-alloy steels and improving the handling properties of thick-walled components.
- Record ID
- CUTb25764b03a4c4fa7acdb8d0b9fa5458e
- Publication categories
- ; ;
- Author
- Journal series
- E3S Web of Conferences, ISSN 2555-0403, e-ISSN 2267-1242, Irregular
- Issue year
- 2021
- Vol
- 323
- Pages
- [1-8]
- Article number
- 00012
- Other elements of collation
- rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 8; Bibliografia (liczba pozycji) - 20; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 323
- Conference
- V International Scientific and Technical Conference Modern Power Systems and Units (MPSU 2021), 2021, 19-05-2021 - 21-05-2021, Kraków, Polska
- Keywords in English
- numerical modeling, TBCs
- DOI
- DOI:10.1051/e3sconf/202132300012 Opening in a new tab
- URL
- https://www.e3s-conferences.org/articles/e3sconf/abs/2021/99/e3sconf_mpsu2021_00012/e3sconf_mpsu2021_00012.html Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTb25764b03a4c4fa7acdb8d0b9fa5458e/
- URN
urn:pkr-prod:CUTb25764b03a4c4fa7acdb8d0b9fa5458e
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.