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Forum Index : Windmills : plans for a solar collector

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Hugh

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Joined: 26/11/2006
Location: Canada
Posts: 41

Posted: 12:14pm 25 Feb 2007

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very detialed
http://www.ida.net/users/tetonsl/solar/page_iii.htm

thnxs allways

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5116

Posted: 09:23pm 26 Feb 2007

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Thats a good set of plans, very pratical. If only there was a cheap and easy way to convert heat directly into electricity. Has anyone ever played around with those peltier effect units to generate power?

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

AllanS
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Joined: 05/06/2006
Location:
Posts: 67

Posted: 09:53pm 26 Feb 2007

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Cooled triple junction solar cells are pushing 40% efficiency at 500 sun concentrations. They cost a mere $100000 / m2.

If insolation is 200Watts/m2 (averaged over 24 hours), a 500m2 mirror focussed on this solar cell might generate 30kW/m2, or 260000 kW/hours/year. At $0.1/KW/h, this would sell for $26000. Add to the cost of the cells, you've got the cost of the mirrors, electronics, distribution, upkeep etc. I reckon by the time it's paid off, you're ready to replace it.

Hugh

Regular Member

Joined: 26/11/2006
Location: Canada
Posts: 41

Posted: 11:42pm 26 Feb 2007

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another alternative and a use for all that heat

http://www.junkyardsolar.com/Edited by Hugh 2007-02-28

thnxs allways

whirlybird

Newbie

Joined: 08/02/2006
Location:
Posts: 27

Posted: 11:57pm 01 Mar 2007

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This is just a quick question maybe for gizmo.

Why can you not directly click on the links on some or any of the pages.

Not trying to be critical of the back shed or its managment

Best regards to all.
Bob B.

I am because I am.I am not always right but often I am.

Megawatt Man

Senior Member

Joined: 03/05/2006
Location: Australia
Posts: 119

Posted: 06:08am 05 Mar 2007

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It's because they're not posted as links, I reckon. Just copy and paste.

Megawatt Man

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5116

Posted: 07:18am 05 Mar 2007

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Hey whirleygird, I did mean to asnwer your question, but completely forgot about it. Thanks to Megawatt Man for posting a message, kind of reminded me.

Yes, if someone just pastes the link, they dont work as a hyperlink when everyone views the posting. But see the buttons above the box where you post a message, the 4th from the left is the Add Hyperlink button ( if you hold your mouse above the buttons for a second it will tell you what it does ). If you click on that when posting a message, it will ask for the text, and then the actual link. So you could use "here" for the text and the web site address for the link. I just paste the link address into both area's.

Sometimes I will edit a posting to change the pasted links to hyperlinks, but thats kind of rude of me so I usually leave them alone.

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

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