In recent years, civil aircraft projects are showing a continuous increase in the demand of onboard electrical power, both for the partial substitution of hydraulic or pneumatic controls and drives with electrical ones, and for the consumption of new auxiliary systems developed in response to flight safety and environmental control issues. Aiming to generate onboard power with low emissions and better efficiency, several manufacturers and research groups are considering the possibility to produce a relevant fraction of the electrical power required by the aircraft by a fuel cell system. The first step would be to replace the conventional auxiliary power unit (based on a small gas turbine) with a polymer electrolyte membrane (PEM) fuel cell type, which today is favored with respect to other fuel cell types; thanks to its higher power density and faster startup. The PEM fuel cell can be fed with a hydrogen rich gas coming from a fuel reformer, operating with the same jet fuel used by the aircraft, or relying on a dedicated hydrogen storage onboard. The cell requires also an air compression unit, where the temperature, pressure, and humidity of the air stream feeding the PEM unit during land and in-flight operation strongly influence the performance and the physical integrity of the fuel cell. In this work we consider different system architectures, where the air compression system may exploit an electrically driven compressor or a turbocharger unit. The compressor type and the system pressure level are optimized according to a fuel cell simulation model, which calculates the cell voltage and efficiency as a function of temperature and pressure, calibrated over the performances of real PEM cell components. The system performances are discussed under different operating conditions, covering ground operation, and intermediate and high altitude cruise conditions. The optimized configuration is selected, presenting energy balances and a complete thermodynamic analysis.
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e-mail: stefano.campanari@polimi.it
e-mail: giampaolo.manzolini@polimi.it
e-mail: uwe.wollrab@airbus.com
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March 2008
Research Papers
Performance Assessment of Turbocharged Pem Fuel Cell Systems for Civil Aircraft Onboard Power Production
Stefano Campanari,
e-mail: stefano.campanari@polimi.it
Stefano Campanari
Associate Professor
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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Giampaolo Manzolini, Research Engineer,
e-mail: giampaolo.manzolini@polimi.it
Giampaolo Manzolini, Research Engineer
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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Andrea Beretti,
Andrea Beretti
Research Engineer
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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Uwe Wollrab
Uwe Wollrab
Systems Engineering, Fuel Cell Systems Development,
e-mail: uwe.wollrab@airbus.com
AIRBUS Deutschland Gmbh
, 21129Hamburg, Germany
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Stefano Campanari
Associate Professor
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italye-mail: stefano.campanari@polimi.it
Giampaolo Manzolini, Research Engineer
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italye-mail: giampaolo.manzolini@polimi.it
Andrea Beretti
Research Engineer
Dipartimento di Energetica
, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
Uwe Wollrab
Systems Engineering, Fuel Cell Systems Development,
AIRBUS Deutschland Gmbh
, 21129Hamburg, Germanye-mail: uwe.wollrab@airbus.com
J. Eng. Gas Turbines Power. Mar 2008, 130(2): 021701 (8 pages)
Published Online: February 29, 2008
Article history
Received:
April 28, 2007
Revised:
May 9, 2007
Published:
February 29, 2008
Citation
Campanari, S., Manzolini, G., Beretti, A., and Wollrab, U. (February 29, 2008). "Performance Assessment of Turbocharged Pem Fuel Cell Systems for Civil Aircraft Onboard Power Production." ASME. J. Eng. Gas Turbines Power. March 2008; 130(2): 021701. https://doi.org/10.1115/1.2772636
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