Thermal–economic–environmental analysis and multi-objective optimization of an internal-reforming solid oxide fuel cell–gas turbine hybrid system

Shirazi, Ali; Aminyavari, Mehdi; Najafi, Behzad; Rinaldi, Fabio; Razaghi, Majid

doi:10.1016/j.ijhydene.2012.09.143

Cited by 168 publications

(61 citation statements)

References 43 publications

(49 reference statements)

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“…Solid oxide fuel cell (SOFC) is considered to be one of the more promising new energy technologies [1][2][3]. In the last decade, there has been a great deal of research aiming to increase the performance of a single SOFC by looking for new electrodes and electrolyte materials, optimizing electrode microstructure or improving electrode and electrolyte preparation techniques [4][5][6][7][8][9][10] and so on.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Interconnect Ribs for a Cathode-Supported Solid Oxide Fuel Cell

et al. 2014

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A comprehensive mathematical model of the performance of the cathode-supported solid oxide fuel cell (SOFC) with syngas fuel is presented. The model couples the intricate interdependency between the ionic conduction, electronic conduction, gas transport, the electrochemical reaction processes in the functional layers and on the electrode/electrolyte interfaces, methane steam reforming (MSR) and the water gas shift reaction (WGSR). The validity of the mathematical model is demonstrated by the excellent agreement between the numerical and experimental I-V curves. The effect of anode rib width and cathode rib width on gas diffusion and cell performance is examined. The results show conclusively that the cell performance is strongly influenced by the rib width. Furthermore, the anode optimal rib width is smaller than that for cathode, which is contrary to anode-supported SOFC. Finally, the formulae for the anode and cathode optimal rib width are given, which provide an easy to use guidance for the broad SOFC engineering community.

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Section: Introductionmentioning

confidence: 99%

Optimization of the Interconnect Ribs for a Cathode-Supported Solid Oxide Fuel Cell

et al. 2014

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“…For multi-objective optimization problems, all the solutions in the Pareto frontier are non-dominated and can be chosen as the optimal solution. However, only one optimal solution needs to be finally determined in practical operations [15]. There are many methods in the decision-maker process to find the final optimal solution from a Pareto frontier.…”

Section: Multi-objective Optimization Using Nsga-iimentioning

confidence: 99%

Multi-Objective Parameter Optimization for Cross-Sectional Deformation of Double-Ridged Rectangular Tube in Rotary Draw Bending by Using Response Surface Methodology and NSGA-II

Zhang

Liu

2017

Metals

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Abstract:Cross-sectional deformation of double-ridged rectangular tube (DRRT) inevitably occurs due to the inhomogeneous deformation induced by external boundary conditions in rotary draw bending (RDB). Unreasonable factor combination would aggravate the cross-sectional deformation of DRRT. So, a powerful and efficient method combining Response Surface Methodology (RSM) and Non-Sorted Genetic Algorithm II (NSGA-II) was proposed to optimize the factors to control the cross-sectional deformation of DRRT in RDB. Firstly, an orthogonal experiment was used to screen out the important factors. It was obtained that three factors-clearance between DRRT and mandrel, clearance between DRRT and bending die, and boosting of pressure die-have an important influence on the cross-sectional deformation of DRRT. It can also be observed that the variation trend of flange sagging (FS) is always consistent with that of space deformation between ridges (SDR) with the changing of factors. RSM based on a Box-Behnken design was then used to establish response surface models. The proposed response surface models were used to analyze the relationship of the important parameters to the responses, such as space deformation between ridges, and width deformation of outer and inner ridge grooves (WDO and WDI). Finally, multi-objective parameter optimization for the cross-sectional deformation of DRRT in RDB was performed by using the established model and NSGA-II algorithm. The interaction of responses was revealed and the value range of each response in the space of Pareto optimal solutions was determined. It can be observed that there is always an evident conflict between SDR and WDO in the space of Pareto optimal solutions. By using this optimization method, the absolute values of SDR and WDI were significantly reduced-by 13.17% and 17.97%, respectively-compared with those before optimization, while WDO just increase only a little.

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“…There are several reasons which influence the efficiency of SOFCs [2], amongst which are the structure of the interconnector and carbon deposition on the anode. Both of these are extremely important since they can influence the state of flow, as well as the mass transfer in the gas channel and porous layer.…”

Section: Introductionmentioning

confidence: 99%

Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell

Yan

Pei

Chen³

et al. 2014

Energies

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Carbon deposition considered in a solid oxide fuel cell (SOFC) model may be influenced by the operating voltage, inlet water/methane ratio, working temperature and pressure, inlet molar fraction of fuel and so on. The effects of these parameters in a planar SOFC implementing a novel bi-layer interconnector are not well understood. This paper is focused on the numerical study of carbon deposition and electrical performance of a bi-layer interconnector planar SOFC. The results illustrate that the electrical performance of the bi-layer interconnector SOFC is 11% higher than that of the conventional straight interconnector SOFC with initial state. After 120 days of operation, the electrical performance of the bi-layer interconnector SOFC has a slight decrease and more carbon deposit because of the increased electrochemical reaction rate. However, these differences minimize if higher operating voltages are involved.

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Thermal–economic–environmental analysis and multi-objective optimization of an internal-reforming solid oxide fuel cell–gas turbine hybrid system

Cited by 168 publications

References 43 publications

Optimization of the Interconnect Ribs for a Cathode-Supported Solid Oxide Fuel Cell

Optimization of the Interconnect Ribs for a Cathode-Supported Solid Oxide Fuel Cell

Multi-Objective Parameter Optimization for Cross-Sectional Deformation of Double-Ridged Rectangular Tube in Rotary Draw Bending by Using Response Surface Methodology and NSGA-II

Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell

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