Design and technoeconomic performance analysis of a 1MW solid oxide fuel cell polygeneration system for combined production of heat, hydrogen, and power

Becker, William L.; Braun, Robert J.; Penev, Michael; Melaina, Marc

doi:10.1016/j.jpowsour.2011.10.040

Cited by 66 publications

(35 citation statements)

References 9 publications

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“…Solid oxide cells (SOCs) are high efficiency, low emission, fuel flexible electrochemical conversion devices that hold promise for distributed electricity generation [1] and grid energy storage [2]. Reduction of the operating temperature to 500-650°C is desirable to reduce balance of plant requirements, to allow the use of low-cost metal interconnectors and alternative sealants, and to reduce the rates of important degradation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Oxygen electrode characteristics of Pr2NiO4+δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3–δ

2015

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Pr 2 NiO 4+ δ was wet infiltrated into porous LSGM scaffolds to form solid oxide cell oxygen electrodes on LSGMelectrolyte symmetrical cells. The minimum calcination temperature required to form this nickelate phase was between 950°C and 1000°C. X-ray diffraction measurements of electrodes tested at 650°C showed little evidence of any phase change, in contrast to 650°C annealed Pr 2 NiO 4+ δ powders that decomposed to Pr 4 Ni 3 O 10 and Pr 6 O 11 . Polarization resistance followed an Arrhenius temperature dependence with an activation barrier of 1.40 eV, and a value as low as 0.11 Ω•cm 2 was observed at 650°C for a Pr 2 NiO 4+ δ loading of 14 vol.%. The present resistance values appear to be the lowest reported to date for a Ruddlesden-Popper phase electrode, and are competitive with perovskite-structure electrodes. The low resistance, combined with the good stability of infiltrated Pr 2 NiO 4+ δ and the advantages of being Co-and Sr-free, make this an exciting new contender for intermediate-temperature solid oxide cell applications.

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Section: Introductionmentioning

confidence: 99%

Oxygen electrode characteristics of Pr2NiO4+δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3–δ

2015

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“…We found, however, that this boundary condition gave rise to an unreasonably small air temperature rise in the air channel. Thus, we chose to remove the radiation boundary condition and instead assume that the fuel cell stack's container loses 3% of the system's inlet fuel energy (HHV) to the environment [33,39,47]. Second, we modified the fuel cell's design to reflect intermediate-temperature operation.…”

Section: Fuel Cell Stackmentioning

confidence: 99%

“…found a 250 kW stand-alone system to be economically competitive with a conventional gas engine [31]. Numerous other studies have considered large (baseload) SOFC power plants [32][33][34][35][36][37][38][39][40][41][42][43][44]. On the residential-scale, Braun [45][46][47] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2.…”

Section: Introductionmentioning

confidence: 99%

Exergy and economic comparison between kW-scale hybrid and stand-alone solid oxide fuel cell systems

Whiston

Collinge

Bilec

et al. 2017

Journal of Power Sources

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Although hybrid solid oxide fuel cell (SOFC) microturbine systems generate power more efficiently than stand-alone SOFC systems, hybrid systems remain in the demonstration phase. The present study compares a hybrid system's exergetic and economic performance with that of a stand-alone system. Both systems meet a university building's kW-scale power demand.The hybrid system operates at 66% exergetic efficiency, and the stand-alone system operates at 59% exergetic efficiency. Increasing the fuel cell's operating voltage increases the systems' exergetic efficiencies, and varying the fuel cell's temperature, pressure, and fuel utilization influences the systems' exergetic performances, though to a lesser extent. The present study calculates the systems' life cycle costs. We find that the systems' life cycle costs depend significantly on the systems' operation. During baseline operation,

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“…The PSA at the OCSD plant operates between 10 and 40 bar with an electric load of 58 kW, met by the nearly 300 kW electric output of the MCFC. Alternative techniques for hydrogen separation such as membrane separation and electrochemical separation could achieve similar integration with carbon recovery at higher net electrical efficiencies [26].…”

Section: Co 2 Separation Processmentioning

confidence: 99%

Study of CO 2 recovery in a carbonate fuel cell tri-generation plant

Rinaldi

McLarty

Brouwer

et al. 2015

Journal of Power Sources

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h i g h l i g h t sSeparation of CO 2 in a biogas plant that co-produces electricity, hydrogen, and heat. The ability of MCFC is to concentrate CO 2 in the anode exhaust stream. Three cathode inlet configurations are considered. Results illustrate a high compatibility between hydrogen co-production and CO 2 recovery. A series configuration of MCFC technology coupled with an ICE achieves outstanding carbon recovery (exceeding 90%). a r t i c l e i n f o b s t r a c tThe possibility of separating and recovering CO 2 in a biogas plant that co-produces electricity, hydrogen, and heat is investigated. Exploiting the ability of a molten carbonate fuel cell (MCFC) to concentrate CO 2 in the anode exhaust stream reduces the energy consumption and complexity of CO 2 separation techniques that would otherwise be required to remove dilute CO 2 from combustion exhaust streams. Three potential CO 2 concentrating configurations are numerically simulated to evaluate potential CO 2 recovery rates: 1) anode oxidation and partial CO 2 recirculation, 2) integration with exhaust from an internal combustion engine, and 3) series connection of molten carbonate cathodes initially fed with internal combustion engine (ICE) exhaust. Physical models have been calibrated with data acquired from an operating MCFC tri-generating plant. Results illustrate a high compatibility between hydrogen coproduction and CO 2 recovery with series connection of molten carbonate systems offering the best results for efficient CO 2 recovery. In this case the carbon capture ratio (CCR) exceeds 73% for two systems in series and 90% for 3 MCFC in series. This remarkably high carbon recovery is possible with 1.4 MWe delivered by the ICE system and 0.9 MWe and about 350 kg day À1 of H 2 delivered by the three MCFC.

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Design and technoeconomic performance analysis of a 1MW solid oxide fuel cell polygeneration system for combined production of heat, hydrogen, and power

Cited by 66 publications

References 9 publications

Oxygen electrode characteristics of Pr2NiO4+δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3–δ

Oxygen electrode characteristics of Pr2NiO4+δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3–δ

Exergy and economic comparison between kW-scale hybrid and stand-alone solid oxide fuel cell systems

Study of CO 2 recovery in a carbonate fuel cell tri-generation plant

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