Support FAQ |
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Add-Ons and Options |
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Assembly |
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Testing
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Add-Ons and Options |
Q. Can i make a 20 cell stack to get more power |
A. Yes. You have the choice of buying additional individual cells or an additional 10-cell stack. From a cost perspective, it is a better deal to buy the complete 10-cell kit. All you will need are longer bolts which you can pick up locally.
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Assembly |
Q. I'm off to a bad start, mine doesn't look like the drawing in the instructions |
A. Don't worry. the drawing is wrong. The instructions say to lay down the endplate with the threaded inserts and put down the bipolar plates so the notch is over the current collector tab. However, the current collector notch in the endplate is towards the left while the notches in the bipolar plates are towards the right. This is OK and the way it should be. the cathode tab will not be aligned with the notches, the anode tab will and that will be the last tab on.
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Q. Even taking the wrong drawing into account, i still can't get my current tabs to be on the same side of the stack |
A. This isn't your fault. There were a few stacks that seem to have their holes in the endplates in the wrong places. When the stack is assembled, one endplate should have the Parker name upright (so ports 3&4 are at the top), the other it should be upside down (so ports 3&4 are on the bottom). Both endplates should have ports 3&4 drilled out. If one of your endplates has ports 1&2 drilled out, contact us and we will swap it out with a correct one.
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Q. Which side of the membrane is the cathode and which is the anode |
A. This is a very good question. We are aware that the C looks like a C when it is in the bottom right corner or on the top corner and depending on which way it is configured can place the cathode up or down. During assembly, the C should be in the bottom right corner so that the C is just to the right of the bipolar plate notch when the stack is being assembled. This makes the top of the MEA the cathode. We have asked the manufacturer to be a little more explicit on this and possibly put a notch to align with the cell notches, write Ca, or do anything that breaks the symmetry.
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Testing |
Q. What is the simplest test i can do with my students |
A. The most fundamental test on a fuel cell is the current vs potential curve. This can be easily accomplished with a low cost amp meter and voltmeter and a group of flashlight bulbs in sockets. Start the fuel cell and then measure the voltage with no current or bulbs connected. Connect one bulb, measure the voltage and current. Connect two bulbs, measure again. For a 5-cell stack, do this until the voltage on the stack goes down to 1V or so but make sure that no single cell goes below 100mV. Plot the data and go from there!
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