The Effect of the Geometric Parameters on the Air Flow Distribution Uniformity within the Protonic Ceramic Fuel Cell Stack

Dai, Jingwen

doi:10.20964/2021.10.52

Cited by 3 publications

(6 citation statements)

References 30 publications

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“…In addition, they observed normalized flow rate distributions over the cathode surface on the PCFC unit by changing the feed/exhaust header widths to 2.5, 5, and 10 mm, as shown in Figure 8c,d [37]. They concluded that varying header width would improve flow distribution characteristics on the cathode layer of each PCFC unit, but its effect is very minimal in the stacked unit.…”

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 95%

“…Similarly, Dai et al [37] also developed a large 3D 20-cell PCFC stack to analyze its fluid dynamics on a large scale. They focused on the dependency and sensitivity of flow distribution uniformity in PCFCs to various geometric variables such as the count of the cell, the manifold's radius, the header's width, etc.…”

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

“…They focused on the dependency and sensitivity of flow distribution uniformity in PCFCs to various geometric variables such as the count of the cell, the manifold's radius, the header's width, etc. Figure 8a [37] demonstrates the air-flow and oxygen diffusion pathway of a typical 20-cell protonic ceramic fuel cell stack using a 3D model. This model consists of the following components: (i) three inlet manifolds used to input air-flow into the stacked cell modules; (ii) two outlet manifolds provided to collect the output air and the produced vapors after cathodic chemical reactions; (iii) to disperse the air-flow on the cathode surface of each cell, fifty rib-channels; (iv) cathode current collector layer to avoid heavy concentration loss due to solid interconnect ribs, and cathode functional layer attached to encourage the electrochemical process in the PCFC stack.…”

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

“…Initially, they analyzed the influence of cell numbers (from 5 to 20) on the flow distributions inside the PCFC stack. Figure 8b [37] shows the results of the normalized flow rate in 5, 10, and 20 cells. It was found that when the number of cells in the PCFC stack increases, the flow distribution homogeneity will experience a significant decline.…”

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

“…However, more time and a high material cost are required to perform this reaction through the experimental setup. More research is currently being conducted on PCFCs to improve their performance by implementing different compositions of electrolytes, cathode, and anode materials, and their influence on ionic and electronic conductivity has been analyzed [37].…”

Section: Introductionmentioning

confidence: 99%

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Computational Fluid Dynamics for Protonic Ceramic Fuel Cell Stack Modeling: A Brief Review

et al. 2022

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Protonic ceramic fuel cells (PCFCs) are one of the promising and emerging technologies for future energy generation. PCFCs are operated at intermediate temperatures (450–750 °C) and exhibit many advantages over traditional high-temperature oxygen-ion conducting solid oxide fuel cells (O-SOFCs) because they are simplified, have a longer life, and have faster startup times. A clear understanding/analysis of their specific working parameters/processes is required to enhance the performance of PCFCs further. Many physical processes, such as heat transfer, species transport, fluid flow, and electrochemical reactions, are involved in the operation of the PCFCs. These parameters are linked with each other along with internal velocity, temperature, and electric field. In real life, a complex non-linear relationship between these process parameters and their respective output cannot be validated only using an experimental setup. Hence, the computational fluid dynamics (CFD) method is an easier and more effective mathematical-based approach, which can easily change various geometric/process parameters of PCFCs and analyze their influence on its efficiency. This short review details the recent studies related to the application of CFD modeling in the PCFC system done by researchers to improve the electrochemical characteristics of the PCFC system. One of the crucial observations from this review is that the application of CFD modeling in PCFC design optimization is still much less than the traditional O-SOFC.

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Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 95%

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

Section: Recent Pcfc Models Based On Flow-channel Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational Fluid Dynamics for Protonic Ceramic Fuel Cell Stack Modeling: A Brief Review

et al. 2022

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Cathode water management towards improved performance of protonic ceramic fuel cells

Zhou

Fei

et al. 2023

Journal of Power Sources

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A Review of Proton-Conducting Electrolytes for Efficient Low-Temperature Solid Oxide Fuel Cells: Progress, Challenges, and Perspectives

Rehman,

Hanif,

Khan

et al. 2024

Energy Fuels

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Aiming to replace traditional energy sources such as coal and oil, researchers from around the world are working hard to develop green technologies that offer safer and more efficient ways to produce clean energy. In this regard, solid oxide fuel cells (SOFCs) have steadily grown in popularity because of their ability to produce electricity through electrochemical reactions. However, the notable drawback of typical solid oxide fuel cells is the high operating temperature, generally over 700−1000 °C. Lowtemperature solid oxide fuel cells (LT-SOFCs) are a promising energy technology that offers several advantages for stationary and mobile power generation at low temperatures. LT-SOFCs are highly dependent on electrolyte materials characterized by proton-conducting oxides. This review discusses progress in the development of proton-conducting solid oxide electrolytes for LT-SOFCs, including advances from materials to devices. In detail, this work focuses on improving performance through various strategies, manipulating the composition and properties of proton-conductors, and addressing the opportunities and challenges associated with their development. Solid oxide materials containing proton-conducting components play a crucial role in the efficient functioning of hydrogen-based energy devices, such as electrolyzers, SOFCs, electronic systems, and hydrogen separation membranes. To enhance the performance of these devices, it is essential to identify materials that efficiently conduct protons and remain durable under hydrogen and water exposure. This study offers valuable insights and guidelines for designing oxide materials with rapid proton diffusion and strong durability, contributing to the continuous improvement of such devices.

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The Effect of the Geometric Parameters on the Air Flow Distribution Uniformity within the Protonic Ceramic Fuel Cell Stack

Cited by 3 publications

References 30 publications

Computational Fluid Dynamics for Protonic Ceramic Fuel Cell Stack Modeling: A Brief Review

Computational Fluid Dynamics for Protonic Ceramic Fuel Cell Stack Modeling: A Brief Review

Cathode water management towards improved performance of protonic ceramic fuel cells

A Review of Proton-Conducting Electrolytes for Efficient Low-Temperature Solid Oxide Fuel Cells: Progress, Challenges, and Perspectives

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