Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Helge Weydahl"'
Autor:
Torleif Lian, Tom Cato Johannessen, Martin Gilljam, Helge Weydahl, Sven Ivar Holm, Jon Øistein Hasvold
Publikováno v:
International Journal of Hydrogen Energy. 45:5543-5553
Autonomous underwater vehicles (AUVs) are programmable, robotic vehicles that can drift, drive, or glide through the ocean without real-time control by human operators. AUVs that also can follow a planned trajectory with a chosen depth profile are us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::823ab7f11eb127e6478c4328c94c9e0f
https://doi.org/10.1016/j.ijhydene.2019.05.035
https://doi.org/10.1016/j.ijhydene.2019.05.035
Autor:
Sara Abada, Michael Abert, Brian Barnett, Klaus Brandt, Hilmi Buqa, Sonia Dandl, Harry Doering, Xuning Feng, Meike Fleischhammer, Sissel Forseth, Daphne A. Fuentevilla, Jürgen Garche, Martin Gilljam, Christopher E. Hendricks, Detlef Hoffmann, Lars Hollmotz, J.A. Jeevarajan, George A. Kerchner, Uwe Koehler, Peter Kurzweil, Peter Lamp, Torleif Lian, Bor Yann Liaw, Verena Liebau, Languang Lu, Christopher Lyness, Guy Marlair, Christopher H. McCoy, David Ofer, Minggao Ouyang, Martin Petit, Karl-Heinz Pettinger, Karsten Pinkwart, Michael Pozin, Jörg Schultheiß, Markus Schweizer-Berberich, Erik J. Spek, Suresh Sriramulu, Jens Tübke, Preben J.S. Vie, Johanna Vogt, Cao-Yang Wang, FuQing Wang, YiMin Wei, Helge Weydahl, Jean-Pol Wiaux, Steven Wicelinski, Jürgen Wilhelmy, Thomas Wöhrle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2c819d6e69a0f81d2fc6b3c2b7da98e
https://doi.org/10.1016/b978-0-444-63777-2.00016-5
https://doi.org/10.1016/b978-0-444-63777-2.00016-5
Autor:
Sven Ivar Holm, Jon Øistein Hasvold, Helge Weydahl, Tom Cato Johannessen, Martin Gilljam, Torleif Lian
Publikováno v:
ECS Transactions. 71:145-154
The Norwegian Defence Research Establishment (FFI) has a long experience with power sources for autonomous underwater vehicles (AUVs). FFI has designed and built a power supply system based on a water-cooled and air-supplied PEM fuel cell stack from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d157dce9b6ab6f3c8c66eaf35db99d9
https://doi.org/10.1149/07101.0145ecst
https://doi.org/10.1149/07101.0145ecst
Publikováno v:
Journal of Applied Electrochemistry. 40:809-819
The load-following capability of a proton exchange membrane fuel cell was studied by measuring the cell voltage response to a sinusoidal current load with large amplitude and varying frequency. A mathematical model was developed, incorporating mass t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b767e2d7cf45da1b0b764f051c43d1af
https://doi.org/10.1007/s10800-009-0064-3
https://doi.org/10.1007/s10800-009-0064-3
Publikováno v:
Electrochimica Acta. 53:7483-7490
A mathematical model of the impedance response of porous air electrodes in alkaline solutions, based on flooded agglomerate theory, was developed. The model results provides insight into characteristic features of the impedance spectra according to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a789e41d4973963ff47e5fbcfd0ed9e
https://doi.org/10.1016/j.electacta.2008.02.111
https://doi.org/10.1016/j.electacta.2008.02.111
Publikováno v:
Journal of Power Sources. 180:808-813
The transient response of a proton exchange membrane fuel cell (PEMFC) was measured for various cathode gas compositions and gas utilisations (fraction of supplied reactant gas which is consumed in the fuel cell reaction). For a PEMFC operated on pur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae8303883ceea0c993f8c6ea8f9bc737
https://doi.org/10.1016/j.jpowsour.2008.01.037
https://doi.org/10.1016/j.jpowsour.2008.01.037
Publikováno v:
Journal of Power Sources. 171:321-330
The transient response of a proton exchange membrane fuel cell (PEMFC) supplied with pure hydrogen and oxygen was investigated by load step measurements assisted by electrochemical impedance spectroscopy and chronoamperometry. Using an in-house desig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e4601a0c2c3bbf815634772b10f4030
https://doi.org/10.1016/j.jpowsour.2007.06.073
https://doi.org/10.1016/j.jpowsour.2007.06.073
Autor:
Helge Weydahl
Publikováno v:
ECS Proceedings Volumes. :723-731
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f43a03a90a1c7a3b4c170d372c0c0be
https://doi.org/10.1149/200421.0723pv
https://doi.org/10.1149/200421.0723pv
Publikováno v:
ECS Meeting Abstracts. :654-654
Electrical cars and consumer electronics use since several years back Li-ion batteries as electrical energy storage. This means that the Li-ion battery technology is mature enough for these applications. However, in maritime applications there are so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e8856de987ba21e528041185341489e
https://doi.org/10.1149/ma2016-03/2/654
https://doi.org/10.1149/ma2016-03/2/654
Publikováno v:
Journal of The Electrochemical Society. 156:A225
This thesis addresses the dynamic behaviour of proton exchange membrane fuel cells (PEMFCs) and alkaline fuel cells (AFCs). For successful implementation in automotive vehicles and other applications with rapidly varying power demands, the dynamic be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61278f375a53cc6be8e367283dba04ea
https://doi.org/10.1149/1.3065077
https://doi.org/10.1149/1.3065077