Pressurized Solid Oxide Fuel Cell/Gas Turbine Power System

Lundberg, Wayne L.; Israelson, G.A.; Moritz, Robert R.; Veyo, S.E.; Holmes, Russel; Zafred, P.R.; King, J. E.; Kothmann, R.E.

doi:10.2172/772401

Cited by 8 publications

(8 citation statements)

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“…The modeling parameters for the SOFC are adopted from the relevant references shown in Table 1 [15,16,[36][37][38] and implemented in Aspen Plus using Aspen Calculator tool [14]. Here, the oxidation reactions in the SOFC are modeled to be at chemical equilibrium, which is deemed reasonable due to the high operating temperature of the reformer-SOFC unit.…”

Section: Design and Simulation Of The Erppmentioning

confidence: 99%

“…al. [15,16] is based on atmospheric SOFC operation, the model is corrected to include the effect of pressure by adding to the calculated voltage a pressure adjustment factor obtained from Lundberg et al [36]. The ERPP design consists of the three steps of power Page 10 of 29 generation and heat recovery, CO 2 compression and dehydration, and CO 2 CL.…”

Section: Design and Simulation Of The Erppmentioning

confidence: 99%

“…Further, increasing the SOFC operating pressure improves power generation efficiency by reducing the heat dissipation due to the aforementioned electrochemical losses. Here, we set the SOFC pressure to be 10 bar, close to the maximum allowable pressure for existing commercial systems [36]. The generated syngas is fed to the SOFC anode to be electrochemically oxidized at 950 o C and 10 bar according to the following reactions.…”

Section: Power Generation and Heat Recoverymentioning

confidence: 99%

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Efficient electrochemical refrigeration power plant using natural gas with ∼100% CO2 capture

Al‐musleh

Mallapragada

2015

Journal of Power Sources

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We propose an efficient Natural Gas (NG) based Solid Oxide Fuel Cell (SOFC) power plant equipped with ~ 100 % CO 2 capture. The power plant uses a unique refrigeration based process to capture and liquefy CO 2 from the SOFC exhaust. The capture of CO 2 is carried out via condensation and purification using two rectifying columns operating at different pressures. The uncondensed gas mixture, comprising of relatively high purity unconverted fuel, is recycled to the SOFC and found to boost the power generation of the SOFC by 22%, when compared to a stand alone SOFC. If Liquefied Natural Gas (LNG) is available at the plant gate, then the refrigeration available from its evaporation is used for CO 2 Capture and Liquefaction (CO 2 CL). If NG is utilized, then a Mixed Refrigerant (MR) vapor compression cycle is utilized for CO 2 CL. Alternatively, the necessary refrigeration can be supplied by evaporating the captured liquid CO 2 at a lower pressure, which is then compressed to supercritical pressures for pipeline transportation. From rigorous simulations, the power generation efficiency of the proposed processes is found to be 70-76% based on lower heating value (LHV). The benefit of the proposed processes is evident when the efficiency of 73% for a conventional SOFC-Gas turbine power plant without CO 2 capture is compared with an equivalent efficiency of 71.2% for the proposed process with CO 2 CL.

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Section: Design and Simulation Of The Erppmentioning

confidence: 99%

Section: Design and Simulation Of The Erppmentioning

confidence: 99%

Section: Power Generation and Heat Recoverymentioning

confidence: 99%

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Efficient electrochemical refrigeration power plant using natural gas with ∼100% CO2 capture

Al‐musleh

Mallapragada

2015

Journal of Power Sources

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“…A small fraction of the produced methanol (~0.3%) reacts further to form side products such as dimethyl-ether, formaldehyde and/or higher alcohols. 14 The stoichiometry of the overall synthesis is satisfied when the volumes of the constituents in the feed gas are such that the relationship among them, defined as R, has a value of 2.03: 15 B.5…”

Section: Methanol Synthesismentioning

confidence: 99%

Energy, Environmental, and Economic Analyses of Design Concepts for the Co-Production of Fuels and Chemicals with Electricity via Co-Gasification of Coal and Biomass

Larson¹,

Williams²,

Kreutz³

et al. 2012

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“…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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Pressurized Solid Oxide Fuel Cell/Gas Turbine Power System

Cited by 8 publications

References 0 publications

Efficient electrochemical refrigeration power plant using natural gas with ∼100% CO2 capture

Efficient electrochemical refrigeration power plant using natural gas with ∼100% CO2 capture

Energy, Environmental, and Economic Analyses of Design Concepts for the Co-Production of Fuels and Chemicals with Electricity via Co-Gasification of Coal and Biomass

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

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