Pressurized solid oxide fuel cells: Experimental studies and modeling

Seidler, Stephanie; Henke, Moritz; Kallo, Josef; Bessler, Wolfgang G.; Maier, Uwe G.; Friedrich, K. Andreas

doi:10.1016/j.jpowsour.2010.09.100

Cited by 68 publications

(40 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fig. 1 Stack components including end plates and SOFC cassettes [13]. Table 1 Overview of different operating conditions for measured polarization curves.…”

Section: Stack Modelmentioning

confidence: 99%

“…All points are measured at steady-state. Only the dynamic polarization curve (13) was measured with a current increase of 0.07 A s -1 . For measuring the polarization curves with constant fuel utilization (14) the anode and cathode gas inlet flows were varied to achieve a constant fuel and air utilization of 40 and 15%, respectively.…”

Section: Stack Modelmentioning

confidence: 99%

“…8 shows measured and simulated polarization curves with a constant fuel utilization of 40%. Furnace temperature was set to 1073 K and a mixture of 30% H 2 and 70% N 2 was used as fuel (see also Table 1,No. 13).…”

Section: Investigation Of Overpotentials At Constant Fuel Utilizationmentioning

confidence: 99%

“…For the safe operation of such power plant the behavior of the SOFC stacks has to be well known and understood. The authors have previously published experimental and theoretical research results [11][12][13] which showed an increase in SOFC performance with increasing pressure. Pressure effects were found to be strongest at low pressure and weaker towards higher pressure.…”

Section: Introductionmentioning

confidence: 99%

“…Experiments are carried out using a set-up presented in [13]. Simulations are conducted within a modeling framework presented in [14].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A validated multi‐scale model of a SOFC stack at elevated pressure

et al. 2013

View full text Add to dashboard Cite

This paper presents a multi‐scale model of a solid oxide fuel cell (SOFC) stack consisting of five anode‐supported cells. A two‐dimensional isothermal elementary kinetic model is used to calculate the performance of single cells. Several of these models are thermally coupled to form the stack model. Simulations can be carried out at steady‐state as well as dynamic operation. The model is validated over a wide range of operating conditions including variation of temperature, gas composition (both on anode and cathode side), and pressure. Validation is carried out using polarization curves and impedance spectra. The model is then used to explain the pressure‐induced performance increase measured at constant fuel utilization of 40%. Results show that activation and concentration overpotentials are reduced with increasing pressure.

show abstract

“…Fig. 1 Stack components including end plates and SOFC cassettes [13]. Table 1 Overview of different operating conditions for measured polarization curves.…”

Section: Stack Modelmentioning

confidence: 99%

Section: Stack Modelmentioning

confidence: 99%

Section: Investigation Of Overpotentials At Constant Fuel Utilizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Experiments are carried out using a set-up presented in [13]. Simulations are conducted within a modeling framework presented in [14].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A validated multi‐scale model of a SOFC stack at elevated pressure

et al. 2013

View full text Add to dashboard Cite

show abstract

System Technology for Solid Oxide Fuel Cells

Minh

2012

Fuel Cell Science and Engineering

View full text Add to dashboard Cite

Conceptual design of ammonia‐based energy storage system: System design and time‐invariant performance

2017

View full text Add to dashboard Cite

in Wiley Online Library (wileyonlinelibrary.com)Chemicals-based energy storage is promising for integrating intermittent renewables on the utility scale. High roundtrip efficiency, low cost, and considerable flexibility are desirable. To this end, an ammonia-based energy storage system is proposed. It utilizes a pressurized reversible solid-oxide fuel cell for power conversion, coupled with external ammonia synthesis and decomposition processes and a steam power cycle. A coupled refrigeration cycle is utilized to recycle nitrogen completely. Pure oxygen, produced as a side-product in electrochemical water splitting, is used to drive the fuel cell. A first-principle process model extended by detailed cost calculation is used for process optimization. In this work, the performance of a 100 MW system under time-invariant operation is studied. The system can achieve a roundtrip efficiency as high as 72%. The lowest levelized cost of delivered energy is obtained at 0.24 $/kWh, which is comparable to that of pumped hydro and compressed air energy storage systems.All cost data except that for the ammonia-based energy storage system are reproduced from Rastler. 8 [Color figure can be viewed at wileyonlinelibrary.com] 1 Stage number of the turbines [E-30/37,RE-5/7] Re HX 5000 Reynolds number of the main streams of all heat exchangers DV, decision variable; CP, calculated parameter; SP, specified parameter; SV, specified value.

show abstract

Pressurized solid oxide fuel cells: Experimental studies and modeling

Cited by 68 publications

References 14 publications

A validated multi‐scale model of a SOFC stack at elevated pressure

A validated multi‐scale model of a SOFC stack at elevated pressure

System Technology for Solid Oxide Fuel Cells

Conceptual design of ammonia‐based energy storage system: System design and time‐invariant performance

Contact Info

Product

Resources

About