The fuel cell
From Elena and Sandra
The history of the fuel cell
Fictitiously in 1839 from sir William Robert Grove
experimentierte mit der Elektrolyse (H2O-> H &
CO2)
Galvanic gas battery
Fuel cell could not assert itself
Fuel cell fell into oblivion
In 1887, Wilhelm Ostwald recognised potential
20 century, wave about technical development
Hardly moveable
Fuel cell- Function
Solarzelle wird angeleuchtet mit Licht
Stream is produced
Energy is used to split water
Origin of two gases (hydrogen, oxygen)
Hydrogen succeeded in one water container oxygen in the other
By the splitting of the water, the water decreases in the containers and
it the gases reach in the water container, water will gather less and
gase there
Gases gather again
They react in the fuel cell with each other
Origin of a circuit
Engine is driven
Functional principle of a fuel cell
Use of the fuel cell
Model cars with fuel technology for the
lessons
Fuel cells with solar cells
Mobile phones
Electric devices (in the camping area)
Accumulator drilling power-operated wrench
U-boats
U-boats advantages and
disadvantages of a fuel cell
Advantages Disadvantages
CO2 neutrally, no Danger in accidents that the
greenhouse effect gases react with each other,
Environmental-carefully explosion
Noise poor Big expenditure, hydrogen
They work only if the stream must become in big
is really required containers advance
The fuel cell owns a high More expensive than oil
acceptance among experts High ones cost (more than
and with ecologically friendly 4000 €)
citizens
Oxidation figures
It brags how many elementary charges an
atom has taken up or has delivered
(Bsp:Redoxreaktion)
A positive oxidation number = electron
density is reduced compared with the normal
state
Negative = the electron density is higher
Galvanic elements
Two materials (electrodes) are dipped in
solutions
They are separated by two glasses,
two half cells thereby arise
The circuit is closed by a wet paper
with salt. Then this is the galvanic element
The fuel cell is likewise a galvanic element.
Hydrogen-pursued coach
Construction Problems
Hydrogen pressure tank, fuel cell 14 percent of the journeys have
and special electronics on the roof fallen out
Das Prinzip Advantages
Of hydrogen stream is won No injurious exhaust gases
Result = steam Indefinitely available
Supplies 200 kilowatts of electric Disadvantages
motor High ones cost (1.2 Mil. €)
Copies Resonance
6 copies (Hamburg, Stuttgart) positive admission of the citizens
Line 6 to the harbour city
The tank
It is refuelled with hydrogen
Won from regenerative springs
(solar energy and wind energy)
The fuel cell with the military
Submarines series 212 Principal item
Dispose of a hybrid impulse Siemens fuel cell PEM
In the long-term-dipped state Contains polymer electrolytes, leads
If the diving time extends by a multiple hydrogen ions to the cathode, reacts with
Hydrogen is stored in oxygen
Metallhydridzylindern Fuel cells are assembled in rows
Impulse arrangement Are in a pressure resistant container
Diesel generator Low temperatures (under 80°C)
Driving engine: Permasyn-engine Efficiency approx. 65°C
Fuel cell arrangement: 9 modules Isolated tank
Driving battery: Tension heave 300-600 Oxygen is carried along in liquid form
V Tank contain an evaporator
More noiselessly Skew-baking air-screw
Advantage
Dive up to one month
No more batteries charge
Produces no more factors
Concept explanation
Hybrid impulse:
Hybrid = lat .; mixed,
big impulse from many different small impulses
Siemens PEM Fuel cell:
A kind of fuel cell, suitable for cars, coaches and pickup vans
Module:
Part of a bigger system (stone, construction element)
Electrolysis:
Fragmentation of a chemical compound under effect of electric
stream
The end
This was a presentation
of Elena and Sandra
Projekt Comenius 11d
Spring: www.wikipedia.de
www.blinde-kuh.de