Performance analysis of a SOFC under direct internal reforming conditions

Janardhanan, Vinod M.; Heuveline, Vincent; Deutschmann, Olaf

doi:10.1016/j.jpowsour.2007.07.008

Cited by 116 publications

(73 citation statements)

References 22 publications

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“…In the first tube, the endothermic effect of the MSR reaction is evident in the first part of the tube and is the cause of a localised temperature drop occurring immediately after the inlet of the feeding fuel into the tube (with a minimum close to the right-bottom corner). Similar effects are reported also by other studies [35][36][37][38]. It is well known [39,40] that localised temperature drops can cause mechanical stresses in the HT-SOFC structure, which can lead to breakages; for HT-SOFCs, the "rule of thumb" is that a CH 4 content around 5% should cause temperature gradients of about 10˝C/cm, which is considered to be at the borderline of the safety window.…”

Section: Model Predictionssupporting

confidence: 79%

Integrated Planar Solid Oxide Fuel Cell: Steady-State Model of a Bundle and Validation through Single Tube Experimental Data

et al. 2015

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This work focuses on a steady-state model developed for an integrated planar solid oxide fuel cell (IP-SOFC) bundle. In this geometry, several single IP-SOFCs are deposited on a tube and electrically connected in series through interconnections. Then, several tubes are coupled to one another to form a full-sized bundle. A previously-developed and validated electrochemical model is the basis for the development of the tube model, taking into account in detail the presence of active cells, interconnections and dead areas. Mass and energy balance equations are written for the IP-SOFC tube, in the classical form adopted for chemical reactors. Based on the single tube model, a bundle model is developed. Model validation is presented based on single tube current-voltage (I-V) experimental data obtained in a wide range of experimental conditions, i.e., at different temperatures and for different H 2 /CO/CO 2 /CH 4 /H 2 O/N 2 mixtures as the fuel feedstock. The error of the simulation results versus I-V experimental data is less than 1% in most cases, and it grows to a value of 8% only in one case, which is discussed in detail. Finally, we report model predictions of the current density distribution and temperature distribution in a bundle, the latter being a key aspect in view of the mechanical integrity of the IP-SOFC structure.

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Section: Model Predictionssupporting

confidence: 79%

Integrated Planar Solid Oxide Fuel Cell: Steady-State Model of a Bundle and Validation through Single Tube Experimental Data

et al. 2015

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“…The presence of temperature gradients and coking are the main limitations for DIR-SOFC. Research on direct internal reforming SOFC with Ni/YSZ anode is limited almost exclusively to methane [17][18][19][20][21][22][23], with few examples of IIR-SOFC using model fuels [24][25][26].…”

Section: Sofc Operating Modes With Hydrocarbon Fuelsmentioning

confidence: 99%

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

2009

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Solid oxide fuel cells (SOFC) have the advantage of being able to operate with fuels other than hydrogen. In particular, liquid fuels are especially attractive for powering portable applications such as small power generators or auxiliary power units, in which case the direct utilization of the fuel would be convenient. Although liquid fuels are easier to handle and transport than hydrogen, their direct use in SOFC can lead to anode deactivation due to carbon formation, especially on traditional nickel/yttria stabilized zirconia (Ni/YSZ) anodes. Significant advances have been made in anodic materials that are resistant to carbon formation but often these materials are less electrochemically active than Ni/YSZ. In this review the challenges of using liquid fuels directly in SOFC, in terms of gas-phase and catalytic reactions within the anode chamber, will be discussed and the alternative anode materials so far investigated will be compared.

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“…This is the first report using methanogenic bacteria in the shrimp pond sludge for the digestion of bagasse and molasses. Furthermore, the produced biogas was used as fuel for the test on SOFC in which direct internal reforming (DIR) technology (Staniforth and Kendall, 1998;Yentekakis, 2006;Janardhanan et al, 2007;Shiratori et al, 2008;Lanzini and Leone, 2010;Leone et al, 2012;Papadam et al, 2012;Lanzini et al, 2013) using a paper-structured catalyst (PSC; Fukahori et al, 2006;Shiratori et al, 2015;Shiratori and Sakamoto, 2016) was applied to achieve SOFC power generation by direct feed of the biogas without any fuel processing.…”

Section: Introductionmentioning

confidence: 99%

Biogas Production from Local Biomass Feedstock in the Mekong Delta and Its Utilization for a Direct Internal Reforming Solid Oxide Fuel Cell

Shiratori

Yamakawa

Sakamoto

et al. 2017

Front. Environ. Sci.

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Fuel-flexible solid oxide fuel cell (SOFC) technologies are presently under study in a Vietnam-Japan international joint research project. The purpose of this project is to develop and demonstrate an SOFC-incorporated energy circulation system for the sustainable development of the Mekong Delta region. Lab-scale methane fermentation experiments in this study with a mixture of biomass feedstock collected in the Mekong Delta (shrimp pond sludge, bagasse, and molasses from sugar production) recorded biogas production yield over 400 L kgVS −1 with H 2 S concentration below 50 ppm level. This real biogas was directly supplied to an SOFC without any fuel processing such as desulfurization, methane enrichment and pre-reforming, and stable power generation was achieved by applying paper-structured catalyst (PSC) technology.

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Performance analysis of a SOFC under direct internal reforming conditions

Cited by 116 publications

References 22 publications

Integrated Planar Solid Oxide Fuel Cell: Steady-State Model of a Bundle and Validation through Single Tube Experimental Data

Integrated Planar Solid Oxide Fuel Cell: Steady-State Model of a Bundle and Validation through Single Tube Experimental Data

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

Biogas Production from Local Biomass Feedstock in the Mekong Delta and Its Utilization for a Direct Internal Reforming Solid Oxide Fuel Cell

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