Analysis of a solid oxide fuel cell and a molten carbonate fuel cell integrated system with different configurations

Solid oxide fuel cell (SOFC) technology incorporates electrochemical reactions that generate electricity and high quality heat. The coupling of this technology with gas turbine bottoming cycles, to form hybrid power systems, leads to high efficiency levels. The purpose of this study is to conceptually integrate the hybrid power system with existing and imminent coal gasification technologies through computer simulation. The gasification technologies considered for integration include the Kellogg Brown Root (KBR) Transport Reactor and Entrained Coal Gasification. Parametric studies were performed to assess the effect of changes in pertinent fuel cell stack process settings such as operating voltage, inverse equivalence ratio and fuel utilization will be varied. Power output, system efficiency and costs are the chosen dependent variables of interest. Coal gasification data and a proven SOFC model program are used to test the theoretical integration. Feasibility and economic comparisons between the new integrated system and existing conventional systems are also made.

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Development and optimization of a multigeneration geothermal and solid-oxide fuel cell-based integrated system with carbon capturing

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2022.118037 ◽

2022 ◽

pp. 118037

Author(s):

Khaled H.M. Al-Hamed ◽

Ibrahim Dincer

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Integrated System ◽

Solid Oxide ◽

Oxide Fuel

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Planar solid oxide fuel cell integrated system technology development

Journal of Power Sources ◽

10.1016/s0378-7753(97)02731-6 ◽

1998 ◽

Vol 71 (1-2) ◽

pp. 354-360 ◽

Cited By ~ 6

Author(s):

S. Elangovan ◽

J. Hartvigsen ◽

A. Khandkar ◽

R.M. Privette ◽

K.E. Kneidel ◽

...

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Technology Development ◽

Integrated System ◽

Solid Oxide ◽

Oxide Fuel ◽

System Technology

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A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell

Journal of Fuel Cell Science and Technology ◽

10.1115/1.3081425 ◽

2009 ◽

Vol 6 (4) ◽

Cited By ~ 17

Author(s):

Jeongmin Ahn ◽

Paul D. Ronney ◽

Zongping Shao ◽

Sossina M. Haile

Keyword(s):

Power Generation ◽

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Thermal Environment ◽

Integrated System ◽

Solid Oxide ◽

Small Scale ◽

Oxide Fuel ◽

Optimal Regime ◽

Single Chamber

A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow “Swiss roll” heat exchanger and combustor. With the single-chamber design, fuel/oxygen crossover due to cracking of seals via thermal cycling is irrelevant and coking on the anode is practically eliminated. Appropriate SOFC operating temperatures were maintained even at low Reynolds numbers (Re) via combustion of the fuel cell effluent at the center of the Swiss roll. Both propane and higher hydrocarbon fuels were examined. Extinction limits and thermal behavior of the integrated system were determined in equivalence ratio—Re parameter space and an optimal regime for SOFC operation were identified. SOFC power densities up to 420 mW/cm2 were observed at low Re. These results suggest that single-chamber SOFCs integrated with heat-recirculating combustors may be a viable approach for small-scale power generation devices.

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