Publications de Diego Larrain | EPFL Graph Search

Local current measurement in a solid oxide fuel cell repeat element

Daniel Favrat, Jan Van Herle, Nordahl Autissier, Diego Larrain

A planar solid oxide fuel cell repeating unit, 50 cm2 in total active electrode size, consisting of an anode supported electrolyte cell bearing two 7 mm holes for fuel and air injection, and contacted to two dense metal current collector plates ...

2007

Dynamic behaviour of SOFC short stacks

Jan Van Herle, Raphaël Ihringer, Nicolas Badel, Nordahl Autissier, Diego Larrain, Joseph Sfeir

Electrical output behaviour obtained on solid oxide fuel cell stacks, based on planar anode supported cells (50 or 100 cm2 active area) and metallic interconnects, is reported. Stacks (1–12 cells) have been operated with cathode air and anode hydrogen flow ...

2006

Simulation of SOFC stack and repeat elements including interconnect degradation and anode reoxidation risk

Daniel Favrat, Jan Van Herle, Diego Larrain

Reliability of SOFC stacks is a complex and key issue. This paper presents a simulation study including some degradation processes, namely, interconnect degradation and the anode reoxidation potential. Quantification for these phenomena has been included i ...

2006

Solid oxide fuel cell stack simulation and optimization, including experimental validation and transient behavior

Diego Larrain

This thesis presents the development of models for the simulation and optimization of the design of a planar solid oxide fuel cell (SOFC) stack. Fuel cells produce electric power directly from a fuel by electrochemical reactions. The high efficiencies demo ...

EPFL2005

Modeling and experimental validation of solid oxide fuel cell materials and stacks

Daniel Favrat, Jan Van Herle, Zacharie Wuillemin, Nordahl Autissier, Diego Larrain

Results on solid oxide fuel cell stacks tested at 800° C with H2 fuel and using planar Ni-zirconia anode supported cells, 80x80x0.2 mm in size, are presented. Modeling and numerical simulation is used to interpret observed results and develop improved desi ...

2005

PROGRESS IN STACK POWER DENSITY USING THE SOFCONNEX™ CONCEPT

Jan Van Herle, Stefan Diethelm, Raphaël Ihringer, Alexandre Closset, Zacharie Wuillemin, Nordahl Autissier, Diego Larrain, Christian Blanc, Emily Thorn

Our SOFC stack development technology is based on the unique SOFConnexTM concept, using flexible gas distribution layers between metal sheet interconnect and thin ASE cells. Flexibility is given both in material and design. This ensures proper electrical c ...

The Electrochemical Society2005

CFD simulation tool for solid oxide fuel cells

Daniel Favrat, Jan Van Herle, Nordahl Autissier, Diego Larrain

A 3D simulation tool for solid oxide fuel cells is presented. The aim of this work is to predict current density, flow, temperature and concentration fields in order to compare and optimize repeat element geometry for a whole stack. A commercial CFD tool w ...

2004

Modeling of cross-flow stack: sensitivity to thermal properties of the materials

Michael Graetzel, Daniel Favrat, Jan Van Herle, Diego Larrain

LENI activities in SOFC are focused on development of a new planar stack concept based on anode supported cells in collaboration with the company HTceramix SA. Modeling of repeat element, stack and systems is starting in parallel. This work presents a mode ...

2003