Design of a novel high-efficiency water separator for proton exchange membrane fuel cell system

Ma, Tiancai; Yang, Yanbo; Lin, Weikang; Yang, Yueping; Jia, Wenya; Zhang, Jiaming

doi:10.1016/j.ijhydene.2018.10.109

Cited by 16 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a comparable pressure drop, the optimum geometry ensures better separation efficiency. On a different note, Ma et al [80] designed a novel cyclone water separator system for a 40 kW PEMFC and investigated the flow field characteristics through CFD simulations. The new concept was designed with a volute inlet to boost the swirling effect, leading to enhanced centrifugal effect and steadier performance throughout the flow rate range.…”

Section: System Integration and Controlmentioning

confidence: 99%

State of the Art of Modelling and Design Approaches for Ejectors in Proton Exchange Membrane Fuel Cell

Antetomaso

2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

Proton exchange membrane fuel cell (PEMFC) has a promising future in the power generation and transportation fields. Recirculation of unused anodic gases is fundamental to achieve a high-performance energy system, and this is usually attained employing ejectors or pumps. With respect to the latter, ejectors present no moving parts, thus resulting in both higher overall efficiency of the system and lower maintenance cost. Their main drawback is represented by the narrow optimal operative range: the entrainment ratio (ER) greatly depends on primary pressure, working pressure, and operative condition in general. In the last decade, numerous authors focused their efforts on fully comprehending and correctly simulating their working principles and analyzing how geometrical parameters influence ER and design different geometries to enlarge the operative range. The aim of this paper is to present in an ordered and clear manner the state of the art of ejector design, both from simulative (turbulence model, single or multiphase stream, etc.) and empirical (commonly used “rule of thumb”) points of view.

show abstract

Section: System Integration and Controlmentioning

confidence: 99%

State of the Art of Modelling and Design Approaches for Ejectors in Proton Exchange Membrane Fuel Cell

Antetomaso

2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

show abstract

“…• The fuel cell inlet pressure and the pressure loss over the stack are given for a certain operating condition by the fuel cell stack manufacturer. • Water separation efficiency is assumed to be 100% (due to very high separation efficiencies achieved in a previous analysis [80][81][82]).…”

Section: System-level Boundary Conditionsmentioning

confidence: 99%

Development of an ejector for passive hydrogen recirculation in PEM fuel cell systems by applying 2D CFD simulation

Singer¹,

Köll²,

Pertl³

et al. 2023

Automot. Engine Technol.

View full text Add to dashboard Cite

The anode subsystem is a major energy consumer of polymer-electrolyte-membrane (PEM) fuel cell systems. A passive hydrogen recirculation system, like an ejector, is an excellent solution to maximize hydrogen utilization while maintaining low parasitic losses. However, high development efforts are necessary to maximize the performance of the ejector for the entire operating range. This research paper provides part of a toolchain for ejector development, consisting in particular of a multi-parameter simulation based on rotational symmetric 2D CFD. The 2D CFD greatly helps optimize the design of the ejector, reducing development effort, and increasing accuracy. In addition, the main correlations between thermodynamic states and geometry on the entrainment ratio are evaluated. Subsequently, an ejector is designed for a PEM fuel cell application using 2D CFD and the results show in which operating range a single ejector can be applied. This toolchain enables rapid design and optimization of ejector geometry, saving development time and cost while increasing accuracy and extending the operating range.

show abstract

“…• Water separation efficiency is assumed to be 100 % (due to very high separation efficiencies achieved in a previous analysis[82] [83][84])Ejector boundary conditions:• Nozzle throat diameter 𝑑 t should be as small as possible, respecting the maximum available nozzle inlet pressure to maximize performance. •…”

mentioning

confidence: 99%

Development of an Ejector for Passive Hydrogen Recirculation in PEM Fuel Cell Systems by applying 2D CFD Simulation

Singer¹,

Köll²,

Pertl³

et al. 2023

Preprint

View full text Add to dashboard Cite

The anode subsystem is a major energy consumer of Polymer-Electrolyte-Membrane (PEM) fuel cell systems. A passive hydrogen recirculation system, like an ejector, is an excellent solution to maximize hydrogen utilization while maintaining low parasitic losses. However, high development efforts are necessary to maximize the performance of the ejector for the entire operating range. This research paper provides part of a toolchain for ejector development, consisting in particular of a multi-parameter simulation based on rotational symmetric 2D CFD. The 2D CFD greatly helps optimize the design of the ejector, reducing development effort, and increasing accuracy. In addition, the main correlations between thermodynamic states and geometry on the entrainment ratio are evaluated. Subsequently, an ejector is designed for a PEM fuel cell application using 2D CFD and the results show in which operating range a single ejector can be applied. This toolchain enables rapid design and optimization of ejector geometry, saving development time and cost while increasing accuracy and extending the operating range.

show abstract

Design of a novel high-efficiency water separator for proton exchange membrane fuel cell system

Cited by 16 publications

References 36 publications

State of the Art of Modelling and Design Approaches for Ejectors in Proton Exchange Membrane Fuel Cell

State of the Art of Modelling and Design Approaches for Ejectors in Proton Exchange Membrane Fuel Cell

Development of an ejector for passive hydrogen recirculation in PEM fuel cell systems by applying 2D CFD simulation

Development of an Ejector for Passive Hydrogen Recirculation in PEM Fuel Cell Systems by applying 2D CFD Simulation

Contact Info

Product

Resources

About