Objective validation of the mathematical models for the non\-equlibrium methane/steam reforming process
PBN-AR
Instytucja
Wydział Energetyki i Paliw (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Książka
Tytuł książki
ECOS 2015 [Dokument elektroniczny]. 28\textsuperscript{th} international conference of Efficiency, Cost, Optimization, Simulation and environmental impact of energy systems : 29\textsuperscript{th} June – 3\textsuperscript{rd} July 2015, Pau, France
Data publikacji
2015
ISBN
978-295555390-9
Wydawca
s.n.
Publikacja
Główny język publikacji
EN
Tytuł rozdziału
Objective validation of the mathematical models for the non\-equlibrium methane/steam reforming process
Rok publikacji
2015
Strony (od-do)
51049-1--51049-12
Numer rozdziału
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.85
Hasło encyklopedyczne
Autorzy
Pozostali autorzy
+ 2
Słowa kluczowe
EN
methane/steam reforming
Ni/YSZ catalyst
Generalized Least Squared (GLS) method
error minimization
Konferencja
Indeksowana w Scopus
tak
Indeksowana w Web of Science Core Collection
nie
Liczba cytowań z Web of Science Core Collection
Nazwa konferencji (skrócona)
ECOS 2015
Nazwa konferencji
28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Początek konferencji
2015-06-29
Koniec konferencji
2015-07-03
Lokalizacja konferencji
Pau
Kraj konferencji
FR
Lista innych baz czasopism i abstraktów w których była indeksowana
Streszczenia
Język
EN
Treść
The published equations of the methane/steam reforming are divergent among themselves and the influence of uncertainty from deriving reaction kinetics was not discussed substantially. The proposed numerical analysis was conducted on the basis of the experimental investigations of the methane/steam reforming process over a Nickel/Yttria-Stabilized Zirconia fine powder catalyst, which is a typical material for Solid Oxide Fuel Cell (SOFC) anode. Modelling of methane and biogas fuelled SOFC requires precise kinetics describing the reforming reaction. The knowledge about the reliability of the proposed model is required. Mathematical modelling of a physical phenomenon is inextricably linked to simplifications and uncertainties connected with the inaccuracy of experimental measurements, assumed parameters and definition of the model equations. Therefore, the external tool is necessary to assess the quality of proposed modelling approach. This article presents the experimental and numerical analyses of the methane/steam reforming process with Generalized Least Squares (GLS) method. By adapting the GLS algorithm and minimizing the volume of the calculated covariance matrix, which represents the hyperellipsoid of the normal distribution for analysed problem, the probability of the various proposed mathematical models can be estimated and secured. The influence of the assumed mathematical model of the methane/steam reforming reaction for the calculated empirical parameters defining the kinetic equation was estimated. The process of decreasing the uncertainty of the obtained results, by improving the mathematical definition, was demonstrated. The benefits obtained from an application of the GLS method to the theoretical analysis of the proposed mathematical models describing physical phenomena in a chemical process are: securing higher accuracy of measured variables, finding the most probable values of unknowns and simultaneously determining the uncertainty coupled with all the variables in the system. The GLS methodology provides the objective and an independent tool for the falsification of the proposed theoretical models by their quantifiable comparison.
Cechy publikacji
chapter-in-a-book
peer-reviewed
Inne
System-identifier
idp:090844