Hydrogen for automotive applications ? A brief historical reminder. Tom Govers SASP 2008.
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Transcript of Hydrogen for automotive applications ? A brief historical reminder. Tom Govers SASP 2008.
Hydrogen for automotive applications ?
A brief historical reminder.
Tom Govers
SASP 2008
For more quantitative considerations,
please refer to the SASP 2008 abstracts
and to the "Hydrogen" page of
www.aecono.com
After the French Revolution, the new rulers
became interested in using balloons to
observe enemy manoeuvres.
They appointed scientist Charles Coutelle to
conduct studies using
” l'Entreprenant ”,
a hydrogen-filled balloon
and the world's first military reconnaissance
aircraft.
The balloon found its first use
in the 1794 Battle of Fleurus,
a small town near Charleroi,
in what is now (still ?) Belgium.
The area seems to have been one of Europe's
favourite battle grounds.
1431, Incendie de la ville, après passage à la souveraineté des Ducs de Bourgogne
1554 et 1556 Pillage de Fleurus par les troupes françaises d'Henri II
1622 : première bataille de Fleurus, gagnée par Don Gonzalès de Cordoue (Spain against the army hired by the protestant Netherlands)
1690 : deuxième bataille de Fleurus, remportée par l'armée de Louis XIV, dit le Roy Soleil (France against the Grand Alliance)
1701 à 1714, guerre de succession d'Espagne avec de nombreux passages de troupes
1794 : troisième bataille de Fleurus où l'armée révolutionnaire de Jourdan bat Cobourg (France against the Austrians)
1815 : bataille de Ligny - Fleurus qui vit la défaite de Napoléon à Waterloo (France against the rest of Europe)
Thus, citoyen scientist Coutelle became
captain in the French revolutionary army
and commander of
the world’s first air force squadron.
Citoyen scientist
Lavoisier,
who had demonstrated
that water is made up
of hydrogen and
oxygen,
was not so fortunate.
He was beheaded that same year of 1794.
When he asked for additional time
to complete his last experiment,
the " Court’s " chairman responded :
" La République n'a pas besoin de savants ni
de chimistes ; le cours de la justice ne peut
être suspendu."
In fact, Lavoisier's execution was urgent
because he was wealthy, and because the
"République" needed money to pay its
soldiers.
To fill the balloon, Coutelle used an on-site
hydrogen generator developed at
the Meudon research centre.
Sustainable energy was provided by copious
amounts of firewood.
It took between 36 and 40 hours to fill the
balloon, which carried two observers.
Purified water was thermally decomposed
in incandescent cast-iron tubes
filled with iron turnings that ensured
thermal contact and acted as an oxygen getter.
Coutelle’s balloon contributed significantly to the French victory
In 1789 Napoleon was elected member of the French Academy of Sciences
In 1799, he staged a coup d'état and became First Consul of the French Republic
In 1801 he was appointed President of the French Academy of Sciences
In 1803 he became Mediator of the Swiss Republic
In 1804 he crowned himself Emperor of the French
In 1805 he was crowned King of Italy
Napoleon knew how to recognise a brilliant
scientist when he met one.
In June of 1800,
First Consul Napoleon,
to whom Volta had first paid his respects in 1796,
granted the scientist from Como tenure
as Professor of Experimental Physics
at the University of Pavia.
In 1801 Volta went to Paris, accompanied by
Brugnatelli, to demonstrate the research work
that had led him to the invention of the battery.
In the presence of First Consul Napoleon,
he read his
"Memoria sull'identità del fluido elettrico
col fluido galvanico",
and received a gold medal in recognition of his
outstanding scientific contributions.
The first French Republic
was rather short-lived.
In 1805,
Emperor Napoleon awarded Count Volta of Como
the Légion d'Honneur,
and granted him a life-long pension of
4000 francs per year.
Keenly interested in the
practical implementations of science,
Volta's many achievements included the demonstration
that hydrogen can be produced by electrolysis,
and that an electric spark will provoke
an explosive reaction in a hydrogen oxygen mixture.
More than two hundred years ago it had thus
been demonstrated that
hydrogen can be extracted from water
by thermal decomposition or by electrolysis,
and that "on-site" production can be achieved
at or near the site of utilisation.
And on January 30, 1807, Isaac de Rivaz,
of the City of Sion, Republic of Valais,
filed a patent application for the
"invention of the principle, means and
procedures by which the deflagration of the
flammable gas is used to impart motion to
machines of different kinds".
The flammable gas was a mixture of air and
hydrogen, and it was ignited by an electric spark.
Excerpts from the application certificate
delivered by the French Minister of the Interior
and from de Rivaz' description of his invention
are reproduced below, courtesy of
the Archives de l'Etat du Valais in Sion,
where the originals are conserved.
Four months later, on May 31, 1807,
Emperor Napoleon confirmed the grant of a
15 year patent to Isaac de Rivaz,
of the Republic of Valais, for his discovery of
the hydrogen-fuelled Internal Combustion
engine. The decree was published in the
October 1807 issue of the "Bulletin des Lois de
l'Empire Français".
A numerical reproduction of the Bulletin des Lois can be found on Gallica, the site of the
Bibliothèque Nationale de France http://gallica.bnf.fr/ark:/12148/bpt6k445358t
The numerical copy of de Rivaz' handwritten description of his invention was kindly provided
by the Archives de l'Etat du Valais http://www.vs.ch/Navig/navig.asp?MenuID=1902
A miniature model of de Rivaz’
environmental-friendly hydrogen powered
automobile
is on exhibit in the museum in Martigny:
http://www.martigny.ch/pagetype.cfm?page=pages/
fr/culture_musees.cfm&sousmenuId
=28§ion=1&langue=en
Two hundred years later,
BMW's misleading publicity campaign could at
best be viewed as a tribute
to Isaac de Rivaz' remarkable invention.
Thanks for your interest ! The ppt file is be available at www.aecono.com