<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents the main types of power boiler steam superheater loads together with relevant standards applicable to superheater calculations. In the case of horizontal superheaters, due to their thermal expansion and assembly errors which are the effect of non-uniform support of the hanger tubes, extra loads are generated on the coil pipes. An FEM analysis performed for a selected superheater structure indicates that maximum stress values and the location where the stresses occur depend on the method of support of the superheater tubes. It is shown that maximum stresses in this structural element can be reduced by introducing appropriate tension of hanger bars supporting the superheater hanger tubes.</p></abstract>

The paper presents the main types of power boiler steam superheater loads together with relevant standards applicable to superheater calculations. In the case of horizontal superheaters, due to their thermal expansion and assembly errors which are the effect of non-uniform support of the hanger tubes, extra loads are generated on the coil pipes. An FEM analysis performed for a selected superheater structure indicates that maximum stress values and the location where the stresses occur depend on the method of support of the superheater tubes. It is shown that maximum stresses in this structural element can be reduced by introducing appropriate tension of hanger bars supporting the superheater hanger tubes.

An Analysis of the Steam Superheater Coil Operation Depending on Different Methods of Coil Support

Department of Thermal Power Engineering, Faculty of Mechanical Engineering

Technical Transactions

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

The paper presents the main types of power boiler steam superheater loads together with relevant standards applicable to superheater calculations. In the case...

An Analysis of the Steam Superheater Coil Operation Depending on Different Methods of Coil Support

Published Online: May 26, 2020

Page range: 187 - 192

DOI: https://doi.org/10.4467/2353737XCT.17.140.6891

Keywords
power boiler, creep, stress, FEM analysis

© 2020 Piotr Duda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

An Analysis of the Steam Superheater Coil Operation Depending on Different Methods of Coil Support

Published Online: May 26, 2020

Page range: 187 - 192

DOI: https://doi.org/10.4467/2353737XCT.17.140.6891

Keywordspower boiler, creep, stress, FEM analysis

© 2020 Piotr Duda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
power boiler, creep, stress, FEM analysis