Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Dark Plates
Author Message
freddyhho Offline
Member
***

Posts: 74
Joined: Sep 2008
Reputation: 0
Post: #1
Dark Plates
Hi again, as some of you know, I upgrade my DRY CELL from 16 to 19 plates 3 series cell and 5 neutrals per cell, the temp stay a little bit colder and the production is 500ml in 15 sec., 13.5 volts @ 20 amps. but for some reason the external plates (1/4 inch polycarbonate) broke from side to side, I use 2L distilled water and 3 teaspoon of NaoH, but the weird think is, I disassembled the cell and the plates wasn't clean, (just 1 day of use after cleaned) just a black looking plates,so, if you have any suggestions about what could be the reason or happen to the plates,all suggestions are welcome.

BTW. I already buy a 3/8 polycarbonate to replace the old ones and be in the process of drilling them.

1995 Dodge Ram 2500
V8 5.9L 360
Tero Dry Cell 19 plates (3 cells 5 neutrals)
MAP and EFIE Enhancers
Water Vaporizer
Gasoline Vaporizer
01-27-2009 03:56 PM
Find all posts by this user Quote this message in a reply
thomasbala Offline
Senior Member
****

Posts: 629
Joined: Jun 2008
Reputation: 4
Post: #2
RE: Dark Plates
(01-27-2009 03:56 PM)freddyhho Wrote:  ... the production is 500ml in 15 sec., 13.5 volts @ 20 amps. I disassembled the cell and the plates wasn't clean, (just 1 day of use after cleaned) just a black looking plates.
Freddy: What are your plates made of? Are they 316L stainless steel? I think the black stuff is either contamination from when you put it together, or, a reaction between the NaOH and your plates; in other words, a residue from the electrolysis reaction. When you put the cell back together wash each plate in isopropyl alcohol to get any grease, oil, etc off and assemble with rubber surgical gloves to keep the oils naturally produced from you skin from contaminating the plates. I'm hoping you're using distilled water; tap water with a high sulfur content will also cause a black residue.

Also, looks like you're only getting 2 lpm; I know better than before; but I think you need at least 4 lpm. Maybe the rebuild and a higher concentration of NaOH will increase your production. BTW, thanks for answering my questions about your country. Good Luck.
01-27-2009 04:27 PM
Find all posts by this user Quote this message in a reply
freddyhho Offline
Member
***

Posts: 74
Joined: Sep 2008
Reputation: 0
Post: #3
RE: Dark Plates
(01-27-2009 04:27 PM)thomasbala Wrote:  
(01-27-2009 03:56 PM)freddyhho Wrote:  ... the production is 500ml in 15 sec., 13.5 volts @ 20 amps. I disassembled the cell and the plates wasn't clean, (just 1 day of use after cleaned) just a black looking plates.
Freddy: What are your plates made of? Are they 316L stainless steel? I think the black stuff is either contamination from when you put it together, or, a reaction between the NaOH and your plates; in other words, a residue from the electrolysis reaction. When you put the cell back together wash each plate in isopropyl alcohol to get any grease, oil, etc off and assemble with rubber surgical gloves to keep the oils naturally produced from you skin from contaminating the plates. I'm hoping you're using distilled water; tap water with a high sulfur content will also cause a black residue.

Also, looks like you're only getting 2 lpm; I know better than before; but I think you need at least 4 lpm. Maybe the rebuild and a higher concentration of NaOH will increase your production. BTW, thanks for answering my questions about your country. Good Luck.

Thanks thomasbala, you are helped me a lot, the SS plates are 304 grade, and is the first time I see this coloration from the plates, even when I use Baking Soda the plates never look like this time, the procedure to clean the plates is this ( or at least how I'm doing it).

I put the plates in vinager solution and start to sand them whit a 3M wetordry sand paper 80 grade, then rising whit tap water just to put out all the dirt generated, then clean the plates in hot distilled water and liquid soap washer, and last, rinse the plates whit pure distilled water and let them dry. I use a white rubber gloves to assemble (those that you say).
I'm doing another modification to the plates, originally, the holes to help fill the plates was 3mm. diameter and the out put holes 1/4 inch, so I made more bigger holes, 1/4 inch from bottom and 3/8 the upper hole (where the gas comes out), this gonna help to have more circulation of the water inside the plates ( I guess) and less heat produced by the cell.

1995 Dodge Ram 2500
V8 5.9L 360
Tero Dry Cell 19 plates (3 cells 5 neutrals)
MAP and EFIE Enhancers
Water Vaporizer
Gasoline Vaporizer
(This post was last modified: 01-27-2009 05:26 PM by freddyhho.)
01-27-2009 05:15 PM
Find all posts by this user Quote this message in a reply
thomasbala Offline
Senior Member
****

Posts: 629
Joined: Jun 2008
Reputation: 4
Post: #4
RE: Dark Plates
Freddy:
Just add one more step; wash the plates in isopropyl [rubbing alcohol] before final assembly. I like your idea of enlarging the "intake" and "exhaust" ports. What are you using to cut the Stainless? Let us know your results.
01-27-2009 05:49 PM
Find all posts by this user Quote this message in a reply
freddyhho Offline
Member
***

Posts: 74
Joined: Sep 2008
Reputation: 0
Post: #5
RE: Dark Plates
I don't cut the ss plates, I pay for that process, the only think that I made is the holes whit a drill bit for SS. I going to add the alcohol to the cleaning process.

I manage to take a picture of the plates, the left plate is the cleanest plate, and the right plate is how it looks after the polycarbonate broke    

1995 Dodge Ram 2500
V8 5.9L 360
Tero Dry Cell 19 plates (3 cells 5 neutrals)
MAP and EFIE Enhancers
Water Vaporizer
Gasoline Vaporizer
01-27-2009 06:40 PM
Find all posts by this user Quote this message in a reply
saltmine Offline
Member
***

Posts: 89
Joined: Aug 2008
Reputation: 0
Post: #6
RE: Dark Plates
Looks like normal plate darkening, from iron being leached out of the plates. I reverse the polarity on my dry cell once in a while, it causes the leached iron to flake off of the darkened plates...Of course, it will discolor the water in your reservoir, but eventually it will stay clean.
I've seen this on almost every cell I've taken apart....It was especially bad on the cell I built with 430 stainless.
01-27-2009 07:08 PM
Find all posts by this user Quote this message in a reply
freddyhho Offline
Member
***

Posts: 74
Joined: Sep 2008
Reputation: 0
Post: #7
RE: Dark Plates
(01-27-2009 07:08 PM)saltmine Wrote:  Looks like normal plate darkening, from iron being leached out of the plates. I reverse the polarity on my dry cell once in a while, it causes the leached iron to flake off of the darkened plates...Of course, it will discolor the water in your reservoir, but eventually it will stay clean.
I've seen this on almost every cell I've taken apart....It was especially bad on the cell I built with 430 stainless.

I being using this plates for almost 4 months, first using Baking Soda and vinager and the last month or so using NaOH, and is the first time the plates took this black color, I reverse the polarity once for week too.

1995 Dodge Ram 2500
V8 5.9L 360
Tero Dry Cell 19 plates (3 cells 5 neutrals)
MAP and EFIE Enhancers
Water Vaporizer
Gasoline Vaporizer
01-27-2009 07:37 PM
Find all posts by this user Quote this message in a reply
thomasbala Offline
Senior Member
****

Posts: 629
Joined: Jun 2008
Reputation: 4
Post: #8
RE: Dark Plates
(01-27-2009 07:37 PM)freddyhho Wrote:  I being using this plates for almost 4 months, first using Baking Soda and vinager and the last month or so using NaOH, and is the first time the plates took this black color, I reverse the polarity once for week too.
Freddy:
I think Saltmine just might be right. NaOH is a lot stronger than baking soda or vinegar especially on 304 SS.
01-27-2009 08:14 PM
Find all posts by this user Quote this message in a reply
freddyhho Offline
Member
***

Posts: 74
Joined: Sep 2008
Reputation: 0
Post: #9
RE: Dark Plates
Perhaps, is a combination of NaOH and the amps pulled by the cell, this are the firsts times I put more electrolyte in the cell to make more production, but what about the polycarbonate plates?, is strange the fact that they broke( from top to bottom) don't you think?. And if I put another dry cell in my pickup the amps gonna doubled or stay the same but whit more production? Thanks for you're reply.

1995 Dodge Ram 2500
V8 5.9L 360
Tero Dry Cell 19 plates (3 cells 5 neutrals)
MAP and EFIE Enhancers
Water Vaporizer
Gasoline Vaporizer
01-27-2009 09:50 PM
Find all posts by this user Quote this message in a reply
tonyc860 Offline
Member
***

Posts: 115
Joined: Oct 2008
Reputation: 0
Post: #10
RE: Dark Plates
(01-27-2009 09:50 PM)freddyhho Wrote:  Perhaps, is a combination of NaOH and the amps pulled by the cell, this are the firsts times I put more electrolyte in the cell to make more production, but what about the polycarbonate plates?, is strange the fact that they broke( from top to bottom) don't you think?. And if I put another dry cell in my pickup the amps gonna doubled or stay the same but whit more production? Thanks for you're reply.

I had the exact same problem, my plates were so black that I believe the production failed on it. Someone told me that it was the 304 I was using. On my last cell I had brass fittings also. I changed the fittings and the ss to 316 and now no problems. not sure if the steel or brass was the problem. I guess if you don't have any brass fittings we could safely assume it is the steel.

Tony
2003 Volvo v70 2.5L turbo
2006 Hyundai Sonata 3.3L v6
2005 F150 4.6 ltr-No longer Thank God!Smile
01-28-2009 05:40 AM
Find all posts by this user Quote this message in a reply
Post Reply 


Forum Jump:


User(s) browsing this thread: 1 Guest(s)