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Through the Wookie Glass...

March 18, 2009 11:18 AM 3/18/09

So I’ve decided that I don’t need a Bradley GT II for a while yet. It’s been one of my cars I’ve wanted to get for years and then convert to a hybrid. It’s light enough and it’s got enough space for batteries and a generator. But I can’t quite afford to do that yet.

I am likely going to buy insulation for the garage rafters though as that’s going to make working out there this summer considerably cooler as well as keeping it warmer in the winter. Maybe I won’t be spending an insane amount of money a month then.

Wish it wasn’t going to rain today. I’d have loved to ride the bike to work today but it t’was not to be. And it’s not going to be suitable riding weather the rest of the week it looks like.

(...)

I’m woolgathering again...

Tomorrow I get my one wisdom tooth yanked so hopefully I won’t be in pain a week from now. As I said before it truly is distracting.

Getting some of my sketches and notes together and hopefully I’ll be trying to build a few solar powered things this year. I’ve got a pack of 25 of the 7x10 Fresnel lenses and they focus to a fairly hot point even with minimal light. Still need to test a bunch of things.

Short post today so I can get some other things done at work...




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( 6 comments — Leave a comment )
siliconshaman
Mar. 18th, 2009 05:26 pm (UTC)
If you're using the Fresnel lenses to concentrate the light onto a Pv cell, don't forget a copper heatsink on the back of the cell, as the hotter the cells get, the less efficient they are.

You could also look around for a non-running mini Mk2, [not the new mini's] they're good to convert to all-electric or hybrid with a new smaller combustion engine. [propane gas turbine even!]

Edited at 2009-03-18 05:27 pm (UTC)
nimitzbrood
Mar. 18th, 2009 05:31 pm (UTC)
I knew about the PV heat dissipation issue but thanks! :-)

This is more of a direct thermal application. I don't want to say any more at the moment. I've copyrighted the sketches when I drew them last year but better safe than sorry.
siliconshaman
Mar. 18th, 2009 05:33 pm (UTC)
Ah...interesting !
acelightning
Mar. 19th, 2009 07:43 am (UTC)
Have you ever looked into some of the solar-power things you can do by covering an old umbrella frame with Mylar?
nimitzbrood
Mar. 19th, 2009 11:01 am (UTC)
I've thought about it but if I'm going to go that route I'll likely get one of the 6' diameter old satellite dishes which are usually solid metal and cover that. It's small enough to fit in the yard somewhere but big enough for the larger power projects.

If I had more land I'd happily be rescuing the fair amount of old 10' or 12' satellite dishes that abound.

It does just occur to me that I have a Dish Network dish in the garage still that might prove interesting to experiment with. ;-)
acelightning
Mar. 19th, 2009 11:39 am (UTC)
Depending on what it's made of and/or whether it's painted, you might be able to just give it a good thorough polishing (and then probably a coat of clear lacquer). You also might find some useful ideas here.

Edited at 2009-03-19 11:40 am (UTC)
( 6 comments — Leave a comment )

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