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NAĎ, M. LOŠÁK, P. LÉTAL, T. PERNICA, M.
Originální název
Simplified approach for creep evaluation in superheaters
Typ
abstrakt
Jazyk
angličtina
Originální abstrakt
This paper is focused on the estimation of temperature distribution on superheater tube bundles for the consequent creep damage evaluation. The precision of estimated temperatures is very important because it significantly affects residual creep life. Conditions in the tube bundle can be simulated using CFD, however, a full 3D simulation would be computationally intensive and not fit for practical use. In order to mitigate this issue, the new approach considered in this paper uses a series of 2D CFD simulations in multiple sections using known inlet flow conditions. Those conditions have been investigated in previous work using 3D CFD simulation of flue gas flow starting in the combustion chamber and ending just before the superheater in the second pass. The paper also deals with possible temperature differences that may arise due to simplifications in the proposed approach. Lastly, the residual creep life is estimated using obtained temperature distribution on the tube bundle.
Klíčová slova
boiler damage, temperature-related damage, creep, life expectancy, superheater tubes, thermal load non-uniformity, Computational Fluid Dynamics (CFD)
Autoři
NAĎ, M.; LOŠÁK, P.; LÉTAL, T.; PERNICA, M.
Vydáno
3. 9. 2019
ISBN
978-80-8075-869-1
Kniha
The 24th Slovak-Polish Scientific Conference with International Participation on Machine Modelling and Simulations 2019
Číslo edice
1
Strany od
37
Strany do
Strany počet
BibTex
@misc{BUT159940, author="Martin {Naď} and Pavel {Lošák} and Tomáš {Létal} and Marek {Pernica}", title="Simplified approach for creep evaluation in superheaters", booktitle="The 24th Slovak-Polish Scientific Conference with International Participation on Machine Modelling and Simulations 2019", year="2019", edition="1", pages="37--37", isbn="978-80-8075-869-1", note="abstract" }