Hydrogen Generator

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Sat Dec 19, 2015 9:22 pm

If only I had 5 M2s sitting around! Better yet, 12. Dream big.
Experience is what you get when you didn't get what you wanted.

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Jules
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Re: Hydrogen Generator

Post by Jules » Sat Dec 19, 2015 10:03 pm

insta's got 5. Hire it out. ;)

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Sat Dec 19, 2015 11:22 pm

Nah, I've spent enough money on this project as it is. $300 on just the metal plates alone. Another $500 on other materials. Just the filament for a 60 plate cell is around $60, and that's for $20/kg stuff. When I started out I had no idea it was going to rack up this kind of costs.

These frames are just always printing as a background task while I work on other things. I'm in no rush.
Experience is what you get when you didn't get what you wanted.

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Mon Dec 21, 2015 7:16 am

25% infill at 10,000 mm/min tears itself up. Not sure what happens there, but the traces just flip up like blades of grass. It's almost like I was printing astroturf. At 50% infill it works fine at that speed though. Strange.
Experience is what you get when you didn't get what you wanted.

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Fri Dec 25, 2015 5:03 pm

I timed the full amount of down time required to swap out a part, which includes letting the plate cool to 40 deg, removing the part, prepping the plate for the next part and letting the plate heat back up. This takes a whopping 20 minutes! So for 120 parts, that's 40 hours of idle printer time spent changing out parts!

Since I have an extra sheet of glass, I do a "hot swap" now where the glass with the finished part on it is removed as soon as the print is complete, but without allowing the platform to cool. Then the other sheet of glass which has already been prepped is immediately put in place and it heats up within a few minutes. This way the cooling, part removal and plate prep is done later while the printer is working, which gets the down time to around 5 minutes instead of 20.
Experience is what you get when you didn't get what you wanted.

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Fri Jan 01, 2016 8:42 pm

My last print of 2015 was the final frame to finish off this monster 120+ hour print job. Now I have all the pieces to build the big-daddy hydrogen generator :)
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008.JPG
Experience is what you get when you didn't get what you wanted.

lem
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Re: Hydrogen Generator

Post by lem » Fri Jan 01, 2016 11:20 pm

Whew! What a big print job.

When you get it all put together how much hydrogen can you produce per hour?

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pyronaught
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Re: Hydrogen Generator

Post by pyronaught » Sat Jan 02, 2016 2:56 am

lem wrote:Whew! What a big print job.

When you get it all put together how much hydrogen can you produce per hour?
300 Liters per hour, or about 10.6 cubic feet.
Experience is what you get when you didn't get what you wanted.

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jimc
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Re: Hydrogen Generator

Post by jimc » Sat Jan 02, 2016 5:40 am

nice!! now if you could safely compress it and store it......

jsc
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Re: Hydrogen Generator

Post by jsc » Sat Jan 02, 2016 8:18 am

jimc wrote:nice!! now if you could safely compress it and store it......
You can burn it in the presence of oxygen, and it will oxidize into a stable non-toxic compound that is liquid at room temperature. You should be able to store that indefinitely.

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