Detail publikačního výsledku

Numerical Analysis of Heat Transfer in Radiant Section of Fired Heater with Realistic Imperfect Geometry of Tube Coil

JEGLA, Z.; HÁJEK, J.; VONDÁL, J.

Originální název

Numerical Analysis of Heat Transfer in Radiant Section of Fired Heater with Realistic Imperfect Geometry of Tube Coil

Anglický název

Numerical Analysis of Heat Transfer in Radiant Section of Fired Heater with Realistic Imperfect Geometry of Tube Coil

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Complex numerical computations are performed for vertical cylindrical fired heater operated in crude oil atmospheric distillation unit to analyse the distribution of heat flux on the tubes of radiant section. The numerical model describes flow, gas combustion and radiative heat transfer inside the radiation section of the fired heater. Analysis of variations of heat flux on circumferential and longitudinal distribution on individual tube walls is executed comparing case of ideal (originally designed) tube coil geometry and tube coil containing typical real geometry imperfections (developed during years of operation). Results of heat transfer analysis confirm and quantify the significant effects of non-uniform heat flux distribution on individual radiant tubes negatively sharpened by geometry imperfections of tube coil. It is recognized, that fired heater design standards recommendations invoked in 1D design calculations of fired heaters are significantly underestimating real heat flux variability.

Anglický abstrakt

Complex numerical computations are performed for vertical cylindrical fired heater operated in crude oil atmospheric distillation unit to analyse the distribution of heat flux on the tubes of radiant section. The numerical model describes flow, gas combustion and radiative heat transfer inside the radiation section of the fired heater. Analysis of variations of heat flux on circumferential and longitudinal distribution on individual tube walls is executed comparing case of ideal (originally designed) tube coil geometry and tube coil containing typical real geometry imperfections (developed during years of operation). Results of heat transfer analysis confirm and quantify the significant effects of non-uniform heat flux distribution on individual radiant tubes negatively sharpened by geometry imperfections of tube coil. It is recognized, that fired heater design standards recommendations invoked in 1D design calculations of fired heaters are significantly underestimating real heat flux variability.

Klíčová slova

fired heater, numerical analysis, heat transfer, radiant section

Klíčová slova v angličtině

fired heater, numerical analysis, heat transfer, radiant section

Autoři

JEGLA, Z.; HÁJEK, J.; VONDÁL, J.

Rok RIV

2015

Vydáno

23.08.2014

Nakladatel

Aidic Servizi S.r.l.

Místo

Milan, Italy

ISBN

978-88-95608-30-3

Kniha

Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014

ISSN

2283-9216

Periodikum

Chemical Engineering Transactions

Svazek

39

Stát

Italská republika

Strany od

889

Strany do

894

Strany počet

6

BibTex

@inproceedings{BUT109158,
  author="Zdeněk {Jegla} and Jiří {Hájek} and Jiří {Vondál}",
  title="Numerical Analysis of Heat Transfer in Radiant Section of Fired Heater with Realistic Imperfect Geometry of Tube Coil",
  booktitle="Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014",
  year="2014",
  journal="Chemical Engineering Transactions",
  volume="39",
  pages="889--894",
  publisher="Aidic Servizi S.r.l.",
  address="Milan, Italy",
  doi="10.3303/CET1439149",
  isbn="978-88-95608-30-3",
  issn="2283-9216"
}