A mathematical model of the double-pipe system with TBCs application

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...

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Autores principales:	Granda Mariusz, Trojan Marcin
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/9c00538dddfa416d896d6b47aa763398
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spelling	oai:doaj.org-article:9c00538dddfa416d896d6b47aa7633982021-11-12T11:44:46ZA mathematical model of the double-pipe system with TBCs application2267-124210.1051/e3sconf/202132300012https://doaj.org/article/9c00538dddfa416d896d6b47aa7633982021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/99/e3sconf_mpsu2021_00012.pdfhttps://doaj.org/toc/2267-1242Following 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.Granda MariuszTrojan MarcinEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 323, p 00012 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Granda Mariusz Trojan Marcin A mathematical model of the double-pipe system with TBCs application
description	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.
format	article
author	Granda Mariusz Trojan Marcin
author_facet	Granda Mariusz Trojan Marcin
author_sort	Granda Mariusz
title	A mathematical model of the double-pipe system with TBCs application
title_short	A mathematical model of the double-pipe system with TBCs application
title_full	A mathematical model of the double-pipe system with TBCs application
title_fullStr	A mathematical model of the double-pipe system with TBCs application
title_full_unstemmed	A mathematical model of the double-pipe system with TBCs application
title_sort	mathematical model of the double-pipe system with tbcs application
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/9c00538dddfa416d896d6b47aa763398
work_keys_str_mv	AT grandamariusz amathematicalmodelofthedoublepipesystemwithtbcsapplication AT trojanmarcin amathematicalmodelofthedoublepipesystemwithtbcsapplication AT grandamariusz mathematicalmodelofthedoublepipesystemwithtbcsapplication AT trojanmarcin mathematicalmodelofthedoublepipesystemwithtbcsapplication
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A mathematical model of the double-pipe system with TBCs application

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