Feasibility study of an external manifold for planar intermediate-temperature solid oxide fuel cells stack

Yan, Dong; Zhu, Bin; Fang, Dawei; Luo, Jun; Wang, Xiaopeng; Pu, Jian; Chi, Bo; Li, Jian; Zhang, Yisheng

doi:10.1016/j.ijhydene.2012.06.020

Cited by 40 publications

(16 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different types of stack have been invented like internal-manifold type [21,22], external-manifold type [23,24], envelope type [25] disc type [26], etc. Within these types, the external manifolds are simple in structure and cost less to build.…”

Section: Introductionmentioning

confidence: 99%

Performance degradation and analysis of 10-cell anode-supported SOFC stack with external manifold structure

Yan

Liang

Yang

et al. 2017

Energy

Self Cite

View full text Add to dashboard Cite

This study describes the development of solid oxide fuel cell (SOFC) stack with external manifold structure. The stack used anode supported cells with size of 11cm×11cm which are fabricated by tape casting, screen-printing and co-sintering. Computer simulation was employed to evaluate the gas distribution in the external manifold stack. The 10-cell stack was operated at 750°C with hydrogen as fuel and air as oxidant and generated output power of 360 W, corresponding to power density of 440mW/cm 2. The degradation performance was investigated for over 750h under the current density of 370 mA/cm 2. Posttest analysis of the SOFC stack was operated to investigate the factors related to the performance degradation such as microstructure of electrodes, sealing, contact resistance and oxidation of metal interconnect. The study presented here showed the stack with external manifold can be considered as a strong candidate for SOFC stack design.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance degradation and analysis of 10-cell anode-supported SOFC stack with external manifold structure

Yan

Liang

Yang

et al. 2017

Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Higher oven temperatures, on the other hand, improve temperature uniformity. Yan et al [11] built a 3-cell stack of anode supported planar SOFC to evaluate the application of an external-manifold design. Also, a two-cell planar stack at the Julich Institute of Energy and Climate Research in Germany F-design with solid oxide cells was investigated by [12].…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of solid oxide fuel cell performance at variable operating conditions

Tikiz

Taymaz

2016

THERM SCI

View full text Add to dashboard Cite

Cell temperature and selection of the reactant gases are crucial parameters for the design and optimization of fuel cell performance. In this study, effect of operating conditions on the performance of solid oxide fuel cell has been investigated. Application of response surface methodology was applied to optimize operations conditions in solid oxide fuel cell. For this purpose, an experimental set-up for testing of solid oxide fuel cell has been established to investigate the effect of hydrogen, oxygen, nitrogen flow rates and cell temperature parameters on cell performance. Hydrogen flow rate, oxygen flow rate, nitrogen flow rate, and cell temperature were the main parameters considered and they were varied between 0.25 and 1 L/min, 0.5 and 1 L/min, 0 and 1 L/min, and 700-800 ºC in the analyses, respectively. The maximum power density was found as 0.572 W/cm 2 in the experiments.

show abstract

“…Typically, a single fuel cell can produce 0.5 to 1V depending on the load. Cells are connected by interconnects in series to obtain a higher power output for a stack [7,10]. It is well known that nonuniform flow distribution will have a detrimental effect on the efficiency as well as the performance on the SOFC stack.…”

Section: Introductionmentioning

confidence: 99%

“…And there is no limit on number of unit cells in an external manifold stack, which makes it easier to build big power plant. Furthermore, the external manifold is thermally decoupled from the stack, hence it has minimum thermal effect on the stack [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Flow Distribution in an External Manifold SOFC Stack by Computational Fluid Dynamics Technique

Wang

Yan

et al. 2014

Fuel Cells

View full text Add to dashboard Cite

In this study, the flow distribution in a planar solid oxide fuel cell (SOFC) stack with external manifolds is investigated by computational fluid dynamics (CFD) technique. Three dimensional external manifold models are constructed for a SOFC stack composed of 24 cells. CFD simulations with air as operating gas are implemented for two types of stacks with different inlet manifolds, including the manifold with three tube inlets (T-manifold) and the manifold with a gas chamber on top (C-manifold). The influences of different parameters such as channel resistance and gas feeding rate on flow distribution are studied. Modeling results indicate that the increase of channel resistance and a lower gas feeding rate can respectively improve the uniformity factor of Tmanifold and C-manifold from 0.963 to 0.995 and 0.989 to 0.998. For a given channel resistance, the pressure distribution in the inlet manifold plays a dominant role in the flow distribution. In addition, flow distribution in the stack with C-manifold is generally more uniform than the stack with Tmanifold. Furthermore, flow characteristics of the two type inlet manifolds are investigated by measuring velocity distribution of the gas at manifold outlets using a hot-wire anemometer.

show abstract

Feasibility study of an external manifold for planar intermediate-temperature solid oxide fuel cells stack

Cited by 40 publications

References 26 publications

Performance degradation and analysis of 10-cell anode-supported SOFC stack with external manifold structure

Performance degradation and analysis of 10-cell anode-supported SOFC stack with external manifold structure

An experimental investigation of solid oxide fuel cell performance at variable operating conditions

Investigation on Flow Distribution in an External Manifold SOFC Stack by Computational Fluid Dynamics Technique

Contact Info

Product

Resources

About