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Justin
New Member
3 Posts |
 Posted - Sep 16 2008 : 1:22:10 PM
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I am a EE student working with a partner on a senior design project to build an alkaline electrolyzer that will be connected to combined wind/solar power supply. We have been doing initial research and understand the basics of operation, but are in need of help with actual design and construction of the electrolyzer.
For example material selection, sizing, hydrogen collection and storage methods, proven designs, failed designs, etc. The power supply is not very large and production will be small scale. Please provide any suggestions and links to sources that could be helpful on this project. Thanks for any help you can offer!!
Contact: jdschaffer@gmail.com |
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Doug Hawley
Member
USA
64 Posts |
Posted - Sep 17 2008 : 3:37:11 PM
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| A search for "electrolyzer" on this forum will yield four pages of information. Also see www.goodideacreative.com for ebooks on building your own electrolyzers. Hydrogen Wind sells a decent electrolyzer for about $200. |
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Justin
New Member
3 Posts |
Posted - Sep 23 2008 : 12:56:36 PM
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| Thanks Doug! |
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Leif
Director of R&D
USA
135 Posts |
Posted - Sep 23 2008 : 1:41:38 PM
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What is your budget?
If it is small i would use stainless steel mesh for the electrodes
and polypropylene as the separator;
if it is large then i would use a nickel alloy such as monel for the electrodes and ptfe as the separator.
do you plan on building pressure in the electrolyzer?
if so what pressure?
how much power will be feeding the electrolyzer?
almost every part you would need can be purchased from McMaster Carr
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Leif Schneider
AHANW Director of Research and Development
leif@ahanw.org |
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Justin
New Member
3 Posts |
Posted - Sep 24 2008 : 1:39:35 PM
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Leif,
We have a budget of about $300 for the electrolyzer. A grad student has a combined solar/small turbine which charges two 12V car batteries and dissipates through a dump load (heating element). We plan to replace that dump load with our electrolyzer, and the batteries will act as our power supply. I don't think we will be building any pressure as our hydrogen production will be fairly low.
Could you offer suggestions for determining size and number of electrode pairs? Thanks for the help Leif! |
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DaveHHO
Junior Member
17 Posts |
Posted - Oct 24 2008 : 06:35:02 AM
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--------------------------------------------------------------------------------
What is your budget?
If it is small i would use stainless steel mesh for the electrodes
and polypropylene as the separator;
if it is large then i would use a nickel alloy such as monel for the electrodes and ptfe as the separator.
do you plan on building pressure in the electrolyzer?
if so what pressure?
how much power will be feeding the electrolyzer?
almost every part you would need can be purchased from McMaster Carr
Do you have any links concerning seperating H from the O in an alkaline electroliser ? Ive built a 10 L/M unit and am exploring
the compression and storage of all the HHO that I produce.
TIA
Dave |
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Keithturtle
Senior Member
USA
327 Posts |
Posted - Oct 25 2008 : 9:54:39 PM
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Dave, how thick would the ptfe need to be, given balanced output pressures for H and O sides?
Thanks,
Turtle |
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DaveHHO
Junior Member
17 Posts |
Posted - Oct 28 2008 : 8:05:26 PM
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Good question Keith, I'm interested in H and O separation too ! lol
If anyone has links to research studies or equally qualified sources , post them up ! I don't know why , but I'm having trouble
with the links to the libary and others on this site.
Looks like Billings is about to drop a bomb on the fossil fuel industry. |
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DaveHHO
Junior Member
17 Posts |
Posted - Oct 28 2008 : 8:08:21 PM
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I'm using 110vac,with neopreme 2mm gaskets, in a 6x6 and 8x8 in. 316 stainless plates. Pushed it gets 9 to 10 L/M |
Edited by - DaveHHO on Oct 29 2008 10:07:09 AM |
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Keithturtle
Senior Member
USA
327 Posts |
Posted - Nov 04 2008 : 4:34:05 PM
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How many plates? 60? Do you port the elyte inflow or dump it in from the top?
Got any power numbers at LPM?
I'm putting together a 31 plate EBN cell soon.
Turtle
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DaveHHO
Junior Member
17 Posts |
Posted - Nov 05 2008 : 06:53:47 AM
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I'm hooked to 110vac, @ 1.8v ish, per cell, Rec from AC wall current to DC
Use 8 x 8 in plates, I'm checking out a machine shop that will cut my plate into 8 in circle, I think the corners on square plates waste juice.
Also: I talked to the guys at United Nuclear, they finnished the move to Michigan and will have a Complete line , from solar to H2 production to compression and storage and ICE to H conversions on the market in a year or less.
Good stuff, The sooner the better I say |
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dangerouslaboratories
New Member
2 Posts |
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Topic |
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Alkaline Electrolyzer
