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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU110256" target="_blank" >RIV/00216305:26210/14:PU110256 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3303/CET1439149" target="_blank" >http://dx.doi.org/10.3303/CET1439149</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3303/CET1439149" target="_blank" >10.3303/CET1439149</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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

ISBN

978-88-95608-30-3

ISSN

2283-9216

e-ISSN

—

Počet stran výsledku

6

Strana od-do

889-894

Název nakladatele

Aidic Servizi S.r.l.

Místo vydání

Milan, Italy

Místo konání akce

Prague

Datum konání akce

23. 8. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000346757600149