Performance comparison of planar, tubular and Delta8 solid oxide fuel cells using a generalized finite volume model

Nagel, Florian P.; Schildhauer, Tilman J.; Biollaz, Serge M.A.; Wokaun, Alexander

doi:10.1016/j.jpowsour.2008.05.046

Cited by 42 publications

(25 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The micro geometry covering the structures of anode, electrolyte, and cathode has direct effects on the electrochemical performance of the fuel cell. The heat transfer mechanisms of convection and conduction through heat exchange areas and the mass transport through active surface areas are influenced by the macro geometry (Nagel et al, 2008). Generally, primary structures of SOFC are tubular, planar, and monolithic as shown in Figures (3), (4), and (5), respectively.…”

Section: Solid Oxide Fuel Cellmentioning

confidence: 99%

Bioethanol-Fuelled Solid Oxide Fuel Cell System for Electrical Power Generation

Sukwattanajaroon¹,

Assabumrungrat²,

Charojrochkul³

et al. 2011

Renewable Energy - Trends and Applications

View full text Add to dashboard Cite

Section: Solid Oxide Fuel Cellmentioning

confidence: 99%

Bioethanol-Fuelled Solid Oxide Fuel Cell System for Electrical Power Generation

Sukwattanajaroon¹,

Assabumrungrat²,

Charojrochkul³

et al. 2011

Renewable Energy - Trends and Applications

View full text Add to dashboard Cite

“…Several data and formulations are reported and used for the simulation of methane/steam reforming process at the anode materials of a SOFC [12,[30][31][32][33]. Brief reviews of some existing models have been presented in Refs.…”

Section: Mass Balancesmentioning

confidence: 99%

“…As the WGS reaction is very fast, either the equilibrium constant method or the kinetic model may be used for the calculation of the amount of carbon monoxide converted in this reaction [6,7,9,10,12,36]. The following equation is used in the present model [7,9]:…”

Section: Mass Balancesmentioning

confidence: 99%

“…[8], K eq;WGS exp 4276=T F À 3:961 , or the exponential form suggested in Ref. [12], can also be used for the calculation of the WGS equilibrium constants.…”

Section: Mass Balancesmentioning

confidence: 99%

“…• Literature sources show that with good approximation a constant Nusselt number can be used to calculate the heat transfer coefficients [6,7,9,12,14,22]. The data used in the present model are shown in Table 1 [7,8].…”

Section: Gas and Solid Materials Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Modelling and Performance Evaluation of Solid Oxide Fuel Cell for Building Integrated Co‐ and Polygeneration

2010

View full text Add to dashboard Cite

Models of fuel cell based combined heat and power systems, used in building energy performance simulation codes, are often based on simple black or grey box models. To model a specific device, input data from experiments are often required for calibration. This paper presents an approach for the theoretical derivation of such data. A generic solid oxide fuel cell (SOFC) system model is described that is specifically developed for the evaluation of building integrated co‐ or polygeneration. First, a detailed computational cell model is developed for a planar SOFC and validated with available numerical and experimental data for intermediate and high temperature SOFCs with internal reforming (IT‐DIR and HT‐DIR). Results of sensitivity analyses on fuel utilisation and air excess ratio are given. Second, the cell model is extended to the stack model, considering stack pressure losses and the radiative heat transfer effect from the stack to the air flow. Third, two system designs based on the IT‐DIR and HT‐DIR SOFCs are modelled. Electric and CHP efficiencies are given for the two systems, as well as performance characteristics, to be used in simulations of building integrated co‐ and polygeneration systems.

show abstract

Recycling Strategies for Solid Oxide Cells

Sarner

Schreiber

Menzler

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

more than 70% of the global energy demand in the power generation, transport, and industrial heating sectors is covered by fossil fuels. [1] However, greenhouse gas (GHG) emissions are essentially associated with two major drawbacks: the scarcity of fossil fuel resources and the evidenced change in climate patterns. [2] In order to mitigate further GHG emissions, the European Union (EU) has committed itself to become CO 2neutral by 2050. [3] To achieve the envisaged energy transition from fossil fuels to renewable energy sources, efficient energy storage systems, are required. For longterm and high-volume storage, hydrogen as a chemical energy carrier seems to be the most reliable choice in this context. The upcoming expansion of hydrogen technologies is a key aspect of the implementation of climate protection policy, as demonstrated by several studies. [4] On an international scale, more than 30 countries have already launched their hydrogen strategies and roadmaps. [5] To produce hydrogen at scale electrolysis is seen as the most advanced technology. Currently, there are four major water electrolysis applications for generating green hydrogen, including proton exchange membranes (PEMs), alkaline water electrolysis (AWEs), alkaline anion exchange membranes (AEMs), and solid oxide cells (SOCs). [6] While PEMs, AWEs, and AEMs are known for their low operating temperatures (20-200 °C), SOCs are classified as high-temperature applications (500-1000 °C) that offer certain benefits. When the utilization of heat is taken into account, the energy efficiency of SOCs can reach more than 90%. [7] In addition, the operating mode can be either set to fuel cell (SOFC) or electrolysis cell (SOEC) in one unit. These are described as reversible SOCs (rSOCs). This special feature therefore makes SOCs easy to adapt to energy surpluses or deficiencies, depending on environment (e.g., whether the wind is blowing or the sun is shining; day/night) and on demand. The research on new SOC materials might also enable long-term operation at lower temperatures (≈ 500 °C), [8] as well as the co-electrolysis of H 2 O and CO 2 for syngas production, or even pure CO 2 -electrolysis on an industrial scale. [9] However, regardless of the type of electrolyzer being used, lifetime is limited. SOC aging processes such as voltage degradation, interdiffusion, foreign phase formation, oxidation or fracturing can result in reduced cell performance and in some instances lead to the complete failure of the system. [10,11] Until lately, SOC recycling-related topics have attracted little attention. As part of the EU-funded project HYTECHCYCLING (finished in 2019), initial proposals for recycling various hydrogen Alongside the generation of renewable power and its storage in batteries, hydrogen technologies are essential to enable a deep decarbonization of the energy system. These technologies include solid oxide cells (SOCs), which can be operated as electrolyzers to generate hydrogen or syngas and/or for power supply in fuel cell mode and demonstrate th...

show abstract

Performance comparison of planar, tubular and Delta8 solid oxide fuel cells using a generalized finite volume model

Cited by 42 publications

References 17 publications

Bioethanol-Fuelled Solid Oxide Fuel Cell System for Electrical Power Generation

Bioethanol-Fuelled Solid Oxide Fuel Cell System for Electrical Power Generation

Modelling and Performance Evaluation of Solid Oxide Fuel Cell for Building Integrated Co‐ and Polygeneration

Recycling Strategies for Solid Oxide Cells

Contact Info

Product

Resources

About