Thermal-strength analysis of a cross-flow heat exchanger and its design improvement

After a year of the heat exchanger operation in overload conditions, a number of cracks on the tube connections to the tubesheet have been observed. To explain the stress concentration and crack initiation, a finite element analysis is performed. A three-dimensional model is constructed and analyzed...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Konieczny Mariusz, Felkowski Łukasz
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	heat exchangers thermal stress thermal fatigue numerical modeling Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/de81f8627d7f41489ff4eb62e57486df
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:de81f8627d7f41489ff4eb62e57486df
record_format	dspace
spelling	oai:doaj.org-article:de81f8627d7f41489ff4eb62e57486df2021-12-05T14:10:47ZThermal-strength analysis of a cross-flow heat exchanger and its design improvement2391-543910.1515/eng-2021-0105https://doaj.org/article/de81f8627d7f41489ff4eb62e57486df2021-11-01T00:00:00Zhttps://doi.org/10.1515/eng-2021-0105https://doaj.org/toc/2391-5439After a year of the heat exchanger operation in overload conditions, a number of cracks on the tube connections to the tubesheet have been observed. To explain the stress concentration and crack initiation, a finite element analysis is performed. A three-dimensional model is constructed and analyzed. To calculate more precisely the state of stress in the most loaded regions, a submodel is created. The maximum stress exceeds the allowable stress, and according to the standards, it can lead to ratcheting. To reduce stress concentration, all tubes should be shortened and corrugated tubes are installed in the high-temperature region from the side of the burner. A finite element model of the modified heat exchanger and a submodel are created. In the modified heat exchanger, ratcheting should not occur according to the applied standards. During the operation of the modified heat exchanger, there are no further problems with cracking.Konieczny MariuszFelkowski ŁukaszDe Gruyterarticleheat exchangersthermal stressthermal fatiguenumerical modelingEngineering (General). Civil engineering (General)TA1-2040ENOpen Engineering, Vol 11, Iss 1, Pp 1069-1075 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heat exchangers thermal stress thermal fatigue numerical modeling Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	heat exchangers thermal stress thermal fatigue numerical modeling Engineering (General). Civil engineering (General) TA1-2040 Konieczny Mariusz Felkowski Łukasz Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
description	After a year of the heat exchanger operation in overload conditions, a number of cracks on the tube connections to the tubesheet have been observed. To explain the stress concentration and crack initiation, a finite element analysis is performed. A three-dimensional model is constructed and analyzed. To calculate more precisely the state of stress in the most loaded regions, a submodel is created. The maximum stress exceeds the allowable stress, and according to the standards, it can lead to ratcheting. To reduce stress concentration, all tubes should be shortened and corrugated tubes are installed in the high-temperature region from the side of the burner. A finite element model of the modified heat exchanger and a submodel are created. In the modified heat exchanger, ratcheting should not occur according to the applied standards. During the operation of the modified heat exchanger, there are no further problems with cracking.
format	article
author	Konieczny Mariusz Felkowski Łukasz
author_facet	Konieczny Mariusz Felkowski Łukasz
author_sort	Konieczny Mariusz
title	Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
title_short	Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
title_full	Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
title_fullStr	Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
title_full_unstemmed	Thermal-strength analysis of a cross-flow heat exchanger and its design improvement
title_sort	thermal-strength analysis of a cross-flow heat exchanger and its design improvement
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/de81f8627d7f41489ff4eb62e57486df
work_keys_str_mv	AT koniecznymariusz thermalstrengthanalysisofacrossflowheatexchangeranditsdesignimprovement AT felkowskiłukasz thermalstrengthanalysisofacrossflowheatexchangeranditsdesignimprovement
_version_	1718371748428120064

Thermal-strength analysis of a cross-flow heat exchanger and its design improvement

Ejemplares similares