Cross-flow, solid-state electrochemical reactors: a steady state analysis

Vayenas, C.G.; Debenedetti, Pablo G.; Yentekakis, I.V.; Hegedus, L. Louis

doi:10.1021/i100019a007

Cited by 62 publications

(42 citation statements)

References 2 publications

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“…The calculation proceeds as follows: (1) initial values are assumed for transport properties and cell voltage V. (2) The main calculation procedure is commenced and heat and mass source terms computed. The transport equations, Eq.…”

Section: Detailed Numerical Model (Dnm)mentioning

confidence: 99%

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Computer methods for performance prediction in fuel cells

Beale

Lin

Zhubrin

et al. 2003

Journal of Power Sources

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Section: Detailed Numerical Model (Dnm)mentioning

confidence: 99%

“…Since the first SOFC computations, Vayenas and Hegedus [2], the detail of the mathematical modeling has increased. Numerical simulations have been conducted at the electrode, cell, and stack levels.…”

Section: Introductionmentioning

confidence: 99%

Computer methods for performance prediction in fuel cells

Beale

Lin

Zhubrin

et al. 2003

Journal of Power Sources

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“…The operation of such SOFCs has been analyzed extensively in the literature [20]. As a consequence, in this work we concentrate on the analysis of the FMA/SOFC only.…”

Section: Description Of the New Processmentioning

confidence: 99%

“…where 1], commonly referred to as efficiency [18], is the ratio of actual to 'thermoneutral" voltages [20], and E E Eth (-AHo)/2F (17)…”

Section: Model Formulationmentioning

confidence: 99%

Direct coal gasification with simultaneous production of electricity in a novel fused metal anode SOFC: a theoretical approach

Yentekakis

Debenedetti

Costa³

et al. 1999

Ionics

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Abstract. Coal gasification in molten metal baths is a relatively new process with important technological advantages. The economics of the process can be made even more attractive if part of the Gibbs energy change of the oxidation reaction is directly converted into electricity through the use of the concept of a solid oxide fuel cell. This combination of fuel cell and fused metal gasifier in a single reactor-cell of the type: C, 02, fused metal / YSZ / perovskite, 02 is the distinguishing feature of the new process analyzed in this work.A mathematical model has been developed which describes the steady-state behaviour of this novel fuel cell and discusses the effect of operating conditions upon cell performance. This theoretical approach shows that, under best-case estimates, the electrochemical cell gasifier is capable of producing very l~gh current and power densities.

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“…Energies 2015, 8, In this paper, we present a mathematical model of the IP-SOFC. After the first seminal SOFC models [10,11], several different approaches have been presented in the literature, which have been reviewed by [12][13][14][15][16][17]. Concerning IP-SOFCs, electrochemical models for the evaluation of voltage and current density distributions have been developed [18,19].…”

Section: Introductionmentioning

confidence: 99%

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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Cross-flow, solid-state electrochemical reactors: a steady state analysis

Cited by 62 publications

References 2 publications

Computer methods for performance prediction in fuel cells

Computer methods for performance prediction in fuel cells

Direct coal gasification with simultaneous production of electricity in a novel fused metal anode SOFC: a theoretical approach

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

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