Operation Of The Fuel Cell; Filling The Fuel Cell With Distilled Water - fischertechnik PROFI Hydro Cell Kit Bedienungsanleitung

P H
R O F I Y D R O
• On the one hand, the reversible fuel cell can be used as a so-called electrolyzer, for
producing hydrogen and oxygen from distilled water. This process is called electrolysis. The
hydrogen and oxygen are stored in storage cylinders.
• On the other hand, the reversible fuel cell can be used to produce electrical energy by
reacting the stored hydrogen with the stored oxygen.
Operating the fuel cell
Description of the fuel cell (see Fig. 1 on page 3).
1 Overfl ow chamber, hydrogen side
2 Hydrogen storage cylinder
3 Plug, hydrogen side
4 Oxygen storage cylinder
(not shown in the diagram)
5 Negative jack (black)
6 Protective diode
7 Positive jack (red)
8 Overfl ow chamber, oxygen side

Filling the fuel cell with distilled water

Place the fuel cell on a fl at plate with the plugs facing upwards.
Then remove the two plugs. Fill the two storage cylinders with distilled water, up to the top
edge of the small tubes (these are positioned inside the cylinders).
(See Fig. A)
Caution! Material damage possible:
Tap water and other liquids permanently damage the fuel cell membrane.
Gently bang the fuel cell on the table to let the water fl ow more easily around the membrane
and the current collecting metal plates.
Now add a bit more water, just enough for it to run through the small tubes. You can now use
the plugs to close the storage cylinders again. Ensure that no air is trapped in the storage
cylinder. A small air bubble does not cause any problems and can be ignored.
If the fuel cell has not been used for a long time, wait for around 10 minutes, to allow the
membrane to become suffi ciently impregnated. Now turn the fuel cell around again.
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2 HKC_GB.indd 18 2 HKC_GB.indd 18
C K I
E L L I T N S T R U C T I O N
M
A N U A L
(Fig. A)
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