Micro-tubular solid oxide fuel cells and stacks

Howe, K.S.; Thompson, Gareth; Kendall, Kevin

doi:10.1016/j.jpowsour.2010.09.043

Cited by 134 publications

(67 citation statements)

References 79 publications

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“…In order to study this effect in our microtubular cells, a chronoamperometric experiment was performed for a period of about 1000 hours at 800 °C, 0.8 V and 5 cm 3 min -1 of 97% H2 -3% H2O as fuel composition. Although higher FUs will be required for practical applications as for of planar geometries, fuel utilization of ∼40% was selected for the chronoamperometric experiment as this is the current state of the art in microtubular devices for long term experiments [16,18]. In this experiment, as observed in the chronoamperometry of figure 3, there is an initial non-stationary period during the first 20 hours, associated to reaccommodation of nickel particles after NiO reduction.…”

Section: Durability Studiesmentioning

confidence: 99%

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Highly stable microtubular cells for portable solid oxide fuel cell applications

Monzón

Laguna‐Bercero

2016

Electrochimica Acta

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Section: Durability Studiesmentioning

confidence: 99%

“…Currently, the state of the art configuration for microtubular cells is the use on anode supported cells, and the most used composition is nickel-YSZ [2,3]. However, probably their main limitation is achieving high fuel utilizations, as the tubular geometry does not allow an easy regulation of gases along the length of the tube [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Highly stable microtubular cells for portable solid oxide fuel cell applications

Monzón

Laguna‐Bercero

2016

Electrochimica Acta

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“…In the first stage of investigations, uniform distribution of heat flux was assumed on the active surface of the cells. The constant heat flux value, q, was calculated from Equation (6) using an analytical estimation based on experimental I-U curves (Howe et al, 2011):…”

Section: Cpeczasopismapanpl; Degruytercom/view/j/cpementioning

confidence: 99%

“…where the electrical power density, P el , of 0.3 -0.5 Wcm -2 was the applied range of the power densities, while the mSOFC electrical efficiency, η, equalled to 30-40% was assumed as a pessimistic estimation for the mSOFC electrical efficiency according to the literature data (Howe et al, 2011). The assumed value of the mSOFC electrical efficiency corresponded to 0.4 -0.5 V of the working voltage.…”

Section: Cpeczasopismapanpl; Degruytercom/view/j/cpementioning

confidence: 99%

Cfd Analysis of Heat Transfer in a Microtubular Solid Oxide Fuel Cell Stack

Pianko‐Oprych¹,

Касилова²,

Jaworski³

2014

Chemical and Process Engineering

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The aim of this work was to achieve a deeper understanding of the heat transfer in a microtubular Solid Oxide Fuel Cell (mSOFC) stack based on the results obtained by means of a Computational Fluid Dynamics tool. Stack performance predictions were based on simulations for a 16 anodesupported mSOFCs sub-stack, which was a component of the overall stack containing 64 fuel cells. The emphasis of the paper was put on steady-state modelling, which enabled identification of heat transfer between the fuel cells and air flow cooling the stack and estimation of the influence of stack heat losses. Analysis of processes for different heat losses and the impact of the mSOFC reaction heat flux profile on the temperature distribution in the mSOFC stack were carried out. Both radiative and convective heat transfer were taken into account in the analysis. Two different levels of the inlet air velocity and three different values of the heat losses were considered. Good agreement of the CFD model results with experimental data allowed to predict the operation trends, which will be a reliable tool for optimisation of the working setup and ensure sufficient cooling of the mSOFC stack.

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“…Microtubular SOFC's have been proposed for portable or mobile applications [4][5][6]. Devices with this particular architecture have relatively small dimensions: length of tubes less than 10 cm, diameter less than 5 mm and thickness of the cell components in the sub-micrometer range.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Microtubular Solid Oxide Fuel Cell Prototypes at a Laboratory Scale and Identification of Needs Related to Gas Sensors

Villegas

Rendón

Ávila-Paredes

2017

The 4th International Electronic Conference on Sensors and Applications

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Solid Oxide Fuel Cells (SOFC's) are devices for power generation, usually for stationary applications. Microtubular SOFC's have been developed for portable applications. The present contribution includes a brief description of the fabrication and some results of the performance evaluation of microtubular SOFC's (specifically for samples that are in the process of failing due to the formation of fractures in them or in the cement sealant) at a laboratory scale so that researchers who are developing sensors could improve their prototypes for this type of applications. During the evaluation, safety relies on gas sensors that detect fuel leaks. A low cost hydrogen gas detectoralarm system is also presented.

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Micro-tubular solid oxide fuel cells and stacks

Cited by 134 publications

References 79 publications

Highly stable microtubular cells for portable solid oxide fuel cell applications

Highly stable microtubular cells for portable solid oxide fuel cell applications

Cfd Analysis of Heat Transfer in a Microtubular Solid Oxide Fuel Cell Stack

Performance Evaluation of Microtubular Solid Oxide Fuel Cell Prototypes at a Laboratory Scale and Identification of Needs Related to Gas Sensors

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