Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging

M. Cochet (Corresponding author), A. Forner-Cuenca, V. Manzi, M. Siegwart, D. Scheuble, P. Boillat

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Uittreksel

Polymer electrolyte fuel cells (PEFC), although a promising technology for carbon free production of electricity, are penalized by system complexity, partly due to cooling and humidifying systems. These systems are necessary to avoid the heating up and drying of the membrane, which stop the electrochemical reaction. Here, we present an evaporative cooling concept for PEFC developed at Paul Scherrer Institute (PSI). Unlike other concepts, our approach does not require any additional layer in the cell structure. Water flows through dedicated anode flowfield channels, parallel to the gas channels, and is distributed over the cell area thanks to a modified gas diffusion layer (GDL). A synthesis method developed at Paul Scherrer Institut (PSI) transforms some portions of the GDL into hydrophilic patterns, which wick the water from the supply channels at low capillary pressure. These hydrophilic areas, parallel and equally spaced, define pathways for liquid water separated from the gases, which avoids flooding. A test cell was built to investigate both water transport with the help of neutron radiography and heat transport thanks to integrated heat flux sensors. Here, we will present how the evaporation can be controlled by the mass flow rates, temperatures, pressures of gases, and the geometry of the hydrophilic lines.
TaalEngels
Pagina's619-626
Aantal pagina's8
TijdschriftFuel Cells
Volume18
Nummer van het tijdschrift5
DOI's
StatusGepubliceerd - 1 okt 2018
Extern gepubliceerdJa

Vingerafdruk

Fuel cells
Neutrons
Cooling
Imaging techniques
Diffusion in gases
Water
Gases
Electrolytes
Neutron radiography
Capillarity
Polymers
Heat flux
Drying
Anodes
Evaporation
Electricity
Flow rate
Membranes
Heating
Carbon

Trefwoorden

    Citeer dit

    Cochet, M. ; Forner-Cuenca, A. ; Manzi, V. ; Siegwart, M. ; Scheuble, D. ; Boillat, P./ Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging. In: Fuel Cells. 2018 ; Vol. 18, Nr. 5. blz. 619-626
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    title = "Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging",
    abstract = "Polymer electrolyte fuel cells (PEFC), although a promising technology for carbon free production of electricity, are penalized by system complexity, partly due to cooling and humidifying systems. These systems are necessary to avoid the heating up and drying of the membrane, which stop the electrochemical reaction. Here, we present an evaporative cooling concept for PEFC developed at Paul Scherrer Institute (PSI). Unlike other concepts, our approach does not require any additional layer in the cell structure. Water flows through dedicated anode flowfield channels, parallel to the gas channels, and is distributed over the cell area thanks to a modified gas diffusion layer (GDL). A synthesis method developed at Paul Scherrer Institut (PSI) transforms some portions of the GDL into hydrophilic patterns, which wick the water from the supply channels at low capillary pressure. These hydrophilic areas, parallel and equally spaced, define pathways for liquid water separated from the gases, which avoids flooding. A test cell was built to investigate both water transport with the help of neutron radiography and heat transport thanks to integrated heat flux sensors. Here, we will present how the evaporation can be controlled by the mass flow rates, temperatures, pressures of gases, and the geometry of the hydrophilic lines.",
    keywords = "Evaporative Cooling, Humidification, Mass and Heat Transfer, Neutron Imaging, Polymer Electrolyte Fuel Cell (PEFC)",
    author = "M. Cochet and A. Forner-Cuenca and V. Manzi and M. Siegwart and D. Scheuble and P. Boillat",
    year = "2018",
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    Cochet, M, Forner-Cuenca, A, Manzi, V, Siegwart, M, Scheuble, D & Boillat, P 2018, 'Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging' Fuel Cells, vol. 18, nr. 5, blz. 619-626. DOI: 10.1002/fuce.201700232

    Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging. / Cochet, M. (Corresponding author); Forner-Cuenca, A.; Manzi, V.; Siegwart, M.; Scheuble, D.; Boillat, P.

    In: Fuel Cells, Vol. 18, Nr. 5, 01.10.2018, blz. 619-626.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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    AU - Scheuble,D.

    AU - Boillat,P.

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    N2 - Polymer electrolyte fuel cells (PEFC), although a promising technology for carbon free production of electricity, are penalized by system complexity, partly due to cooling and humidifying systems. These systems are necessary to avoid the heating up and drying of the membrane, which stop the electrochemical reaction. Here, we present an evaporative cooling concept for PEFC developed at Paul Scherrer Institute (PSI). Unlike other concepts, our approach does not require any additional layer in the cell structure. Water flows through dedicated anode flowfield channels, parallel to the gas channels, and is distributed over the cell area thanks to a modified gas diffusion layer (GDL). A synthesis method developed at Paul Scherrer Institut (PSI) transforms some portions of the GDL into hydrophilic patterns, which wick the water from the supply channels at low capillary pressure. These hydrophilic areas, parallel and equally spaced, define pathways for liquid water separated from the gases, which avoids flooding. A test cell was built to investigate both water transport with the help of neutron radiography and heat transport thanks to integrated heat flux sensors. Here, we will present how the evaporation can be controlled by the mass flow rates, temperatures, pressures of gases, and the geometry of the hydrophilic lines.

    AB - Polymer electrolyte fuel cells (PEFC), although a promising technology for carbon free production of electricity, are penalized by system complexity, partly due to cooling and humidifying systems. These systems are necessary to avoid the heating up and drying of the membrane, which stop the electrochemical reaction. Here, we present an evaporative cooling concept for PEFC developed at Paul Scherrer Institute (PSI). Unlike other concepts, our approach does not require any additional layer in the cell structure. Water flows through dedicated anode flowfield channels, parallel to the gas channels, and is distributed over the cell area thanks to a modified gas diffusion layer (GDL). A synthesis method developed at Paul Scherrer Institut (PSI) transforms some portions of the GDL into hydrophilic patterns, which wick the water from the supply channels at low capillary pressure. These hydrophilic areas, parallel and equally spaced, define pathways for liquid water separated from the gases, which avoids flooding. A test cell was built to investigate both water transport with the help of neutron radiography and heat transport thanks to integrated heat flux sensors. Here, we will present how the evaporation can be controlled by the mass flow rates, temperatures, pressures of gases, and the geometry of the hydrophilic lines.

    KW - Evaporative Cooling

    KW - Humidification

    KW - Mass and Heat Transfer

    KW - Neutron Imaging

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    Cochet M, Forner-Cuenca A, Manzi V, Siegwart M, Scheuble D, Boillat P. Novel concept for evaporative cooling of fuel cells: an experimental study based on neutron imaging. Fuel Cells. 2018 okt 1;18(5):619-626. Beschikbaar vanaf, DOI: 10.1002/fuce.201700232