Analysis of Superheater Work Under Creep Conditions

Duda, Piotr; Felkowski, Łukasz

doi:10.12736/issn.2300-3022.2015104

Cited by 2 publications

(4 citation statements)

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“…Taking into consideration the long boiler operation time and creep of the S304H material, in steam superheaters, there may be significant strains of the tubes, which consequently excludes the superheater from further work. The value of equivalent stresses is higher than the creep strength for 100,000 [h], therefore it requires further analysis using the ANSYS software [9] using the proposed creep equation (2) [3,10,11,12]: The Solid 185 type finite elements were used to build the model in the ANSYS software. The preliminary analysis in the ANSYS software was based on a typical solution for the theory of elasticity.…”

Section: Steam Superheater Analysismentioning

confidence: 99%

“…Effect of those loads often causes local concentration of stress. Boiler elements subjected to the all combination are just steam superheaters [3]. These elements of boiler are characterized by work in high pressure and temperature parameters.…”

Section: Introductionmentioning

confidence: 99%

“…In those tubes it is very hard to predict strain value due to creep phenomenon, and to predict changes in the material structure and lifetime [3].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper it will be shown analysis of the pipeline system affecting the superheater, influence of external forces on stress concentration in superheater tubes and creep analysis results for material S304H after 100,000h working time. Also for this purpose, the paper will propose a creep equation whose constants have been determined experimentally [3].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of superheater tubes failure

Felkowski¹,

Mędrala

2019

E3S Web Conf.

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Failures of boiler pressure parts, which working in high temperature and pressure conditions are often caused by overheating or corrosion. These two parameters are decisive, but not the only ones. Local stress concentration also depends on the type of headers support and external loads from pipelines. Boiler pressure parts subjected to all loads mentioned before are steam superheaters. Thermal expansion, high pressure and temperature lead to shortening superheaters lifetime. In the places with significant stress caused by all load combinations it is difficult to predict creep strains and material structure changes. This paper shows superheater in which considering external loads from pipeline and their influence on the stress concentration in the superheater tubes. This article also shows steel S304H creep analysis for 100k [h] results and creep equation with experimental developed constants.

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Section: Steam Superheater Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In those tubes it is very hard to predict strain value due to creep phenomenon, and to predict changes in the material structure and lifetime [3].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations