Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Heat Transfer Research
Impact-faktor: 0.404 5-jähriger Impact-Faktor: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

Volumes:
Volumen 50, 2019 Volumen 49, 2018 Volumen 48, 2017 Volumen 47, 2016 Volumen 46, 2015 Volumen 45, 2014 Volumen 44, 2013 Volumen 43, 2012 Volumen 42, 2011 Volumen 41, 2010 Volumen 40, 2009 Volumen 39, 2008 Volumen 38, 2007 Volumen 37, 2006 Volumen 36, 2005 Volumen 35, 2004 Volumen 34, 2003 Volumen 33, 2002 Volumen 32, 2001 Volumen 31, 2000 Volumen 30, 1999 Volumen 29, 1998 Volumen 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v41.i3.30
pages 233-245

Numerical Modeling and Parametric Studies of Steam Reformers

C. Ventura
Dep. Eng. Mecanica, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Joao Luis Toste Azevedo
Technical University of Lisbon; Dep. Eng. Mecanica, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal

ABSTRAKT

This paper presents the application of a numerical model that was developed to describe the Steam Reforming Process (SRP model) in a small-scale reformer. The reformer consists of a burner enclosed in a vessel while the reforming reaction occurs in channels with multiple passages installed around the vessel. The SRP model was implemented in the C language and is used as a User Defined Function (UDF) in the commercial program Fluent.
This model is a one-dimensional representation of the reforming channels that surround the burner enclosure and was previously validated against experimental data and a Fluent-based simulation. The burner is simulated with a 2D approximation that was also previously evaluated against both experimental and 3D burner calculations. The reformer and burner model are coupled by the temperature distribution in the dividing wall that is updated by the SRP model.
The present paper presents applications of the burner model and the coupled reformer model. The objective of the study is to scale-up an existing reformer from 5 to 10 kg/day hydrogen production. Keeping the initial dimensions of the burner and doubling the flow rates, the model is used to analyze the position of the radiation shield on temperature and heat flux distribution. The simulations for the coupled model are used to analyze the effects of modifying the catalyst reaction length, position and the global dimensions of the reformer using a geometric scale-up factor.


Articles with similar content:

NUMERICAL MODELLING AND PARAMETRIC STUDIES OF STEAM REFORMERS
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
C. Ventura, Joao Luis Toste Azevedo
FUNDAMENTAL INVESTIGATIONS OF SULPHURIC ACID DECOMPOSITION IN VOLUMETRIC RECEIVERS
International Heat Transfer Conference 11, Vol.12, 1998, issue
P. Roosen, O. Unruh , R. Nowak
RANS turbulence treatment for continuous adjoint optimization
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2015, issue
C. Reichl, H. Jasak, H. Rusche, Mirza Popovac
NON LUMINOUS GAS RADIATION: APPROXIMATE EMISSIVITY MODELS
International Heat Transfer Conference 7, Vol.5, 1982, issue
Ihab H. Farag
FAST MODEL OF A GLASS MELTING FURNACE
International Heat Transfer Conference 13, Vol.0, 2006, issue
Benjamin Remy, O. Auchet, Manuel Girault