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2008 summer progress part 2.
By margusten, Section Diaries Posted on Tue Oct 7th, 2008 at 12:44:32 PM MST
Basement or cellar.

Hello,
Now satellite dish removed and 20W solar panel on polar mount.
May be next summer I can add motor and some tracking electronics.
Inside of cellar I have 12 2V batteries. Now connected 12V and 900Ah.
And little bit modified old controller.
Only problem seems to be moisture. You can see small water bubbles. How long can electronics work in such place?
Tried new 4 PVC blade set on new alternator. Works but not as good 3 PVC blade set before. Probably too thin blades.
More news coming soon.
Margus
Margus: This will be interesting for many users but please re-post this Diary using resized photos, 1648px × 1171px images not allowed!
Photo Size is limited to 150K bytes and/or 640x480.. Please adjust your photos before posting them, whether they are on our server or yours. If you post large images, it causes large problems for other users who have slow internet connections and/or small screens.

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2008 summer progress part 2. | 4 comments (4 topical, 0 editorial)

Re: 2008 summer progress part 2. (3.00 / 0) (#1)
by Airstream on Tue Oct 7th, 2008 at 11:18:43 PM MST
(User Info)

Hope he posts back...

Re: 2008 summer progress part 2. (3.00 / 0) (#2)
by margusten (margusten.ee@mail.ee) on Wed Oct 8th, 2008 at 01:11:31 AM MST
(User Info) http://www.geocities.com/ResearchTriangle/Thinktank/1780

Sorry about oversized pictures,

Again with pictures.

Now satellite dish removed and 20W solar panel on polar mount.
May be next summer I can add motor and some tracking electronics.

Inside of cellar I have 12 2V batteries. Now connected 12V and 900Ah.

And little bit modified old controller.

Only problem seems to be moisture. You can see small water bubbles. How long can electronics work in such place?

Tried new 4 PVC blade set on new alternator. Works but not as good 3 PVC blade set before. Probably too thin blades.
More news coming soon.

Margus

Re: 2008 summer progress part 2. (3.00 / 0) (#4)
by Ungrounded Lightning Rod on Wed Oct 8th, 2008 at 09:50:00 PM MST
(User Info)

I see you have the batteries on wood boards and shoved into the corner.

The insulation between them and the floor is good - helps to keep the batteries from stratifying and getting a voltage gradient driven by a temperature gradient.

But better would be to pull them out from the wall and adjust the supports under them so air can circulate all around 'em.

Also: Be sure to vent the area so you don't have hydrogen and acid droplets collecting in the area. (That will also help with the condensation.) It only takes a LITTLE venting to avoid explosions and corrosion.

[ Parent ]

Re: 2008 summer progress part 2. (3.00 / 0) (#3)
by tecker on Wed Oct 8th, 2008 at 02:00:26 AM MST
(User Info)

Moisture will take it's toll . Put your controllers in another enclosure .Calculate the highest wattage and install a resistance 20 percent higher than the max wattage to dry the air somewhat in windy weather .

2008 summer progress part 2. | 4 comments (4 topical, 0 editorial)

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