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Is solar powered tractors the wave of the future?

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Author 
JRB IN MAINE

10-06-2004 17:16:07




Report to Moderator

Yesterday I went to the fair like I do every year at this time . while checking out the show tractors I ran across a 50"s cub that a man converted to solar power . It looked pretty simple but the only awkuward thing was the 4x8 solar panel over the top of the tractor . I give this Man an attaboy for finding new ways to by pass gas and oil alternatives.What do you think?




[Log in to Reply]   [No Email]
big fred

10-07-2004 11:29:00




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to JRB IN MAINE , 10-06-2004 17:16:07  
Your upper limit is about 1100 W per square meter. A 4 by 8 array is not going to generate more than 4 1/2 HP, even at 100% conversion efficiency (1st law efficiency). And present technology is nowhere near 100%, probably a lot closer to 10-15%.



[Log in to Reply]  [No Email]
Jacob

10-07-2004 10:57:32




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to JRB IN MAINE , 10-06-2004 17:16:07  
NO!!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! 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!!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!! !!!!!

[Log in to Reply]  [No Email]
txblu

10-07-2004 06:04:11




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to JRB IN MAINE , 10-06-2004 17:16:07  
Don't want to rain on your parade, but electrical equivalent of hp is 741 watts. So if the cub is 15 hp, gotta gen twice that to make up for the losses so you're looking at something like 22,230 watts. To give you an idea how much that is, at 230 volts, that's 97 amperes. That's the input capacity to run a lot of houses.

Better be pulling a very big trailer cause you ain't going to get there with one 4x8 cell.

Mark

[Log in to Reply]  [No Email]
BobR

10-06-2004 21:19:30




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to JRB IN MAINE , 10-06-2004 17:16:07  
Sounds like an idea! I would think it less complicated than hydrogen fuel cells if you could generate and store enough power. I hope they keep on working on it. Would be nice to be able to tell OPEC what they can do with their oil!



[Log in to Reply]  [No Email]
paul

10-06-2004 17:53:01




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to JRB IN MAINE , 10-06-2004 17:16:07  
A 4x8 array will just more than trickle charge a battery bank. Hook up a plow & see how long it lasts....

Photovoltics just don"t produce the type of pulling power a tractor needs.

But, I too like the inventiveness & giving it a try! :) Would be cool to see. :)

--->Paul



[Log in to Reply]  [No Email]
Britt

10-06-2004 17:59:36




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to paul, 10-06-2004 17:53:01  
Something like that would work best in Death Valley were you have enough sun to keep it charged up, but what about the rest of us. I can see it now, the tractor stopped mowing because a cloud passed overhead. :)
Seriously, our present technology is pretty limited on mobil solar power and light weight hi capacity batteries. But who knows what the future holds?

Britt



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paul

10-06-2004 19:18:26




Report to Moderator
 Re: Is solar powered tractors the wave of the futu in reply to Britt, 10-06-2004 17:59:36  
If they ever figure out better storage for electricity!

Producing it with a stationary array is pretty simple if a bit spendy; & we already transport it all over the place on wires..... But storing it! That's the problem. They have some pretty good battiries that pack a punch - if you don't mind keeping them heated to 700 degrees all the time, or some such.... Back to the drawing board.

--->Paul

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BRB in Oxford County, Mai

10-07-2004 08:32:46




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 Solar powered tractors are not the wave of the nea in reply to paul, 10-06-2004 19:18:26  
I saw that same tractor (Fryeburg Fair, right?), and my first thought was that I'd hate to have to rely on it for my livelihood -- it's certainly interesting to see it operating at idle, but put a load on it (plow, mower, or what have you) and I bet you'd see its shortcomings immediately. Give me a 1940s Deere or '50s Minneapolis-Moline like the ones parked beside it anyday.



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