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Two interesting student projects:

Veronica Santos and Julia Parreiras from Belo Horizonte, Brazil make solar water purifiers using recycled plastic bottles and snack food bags turned inside out.  The mylar bags are concentrators and the bottles are PET plastic, one side painted black to absorb more heat.  They found that PET had more UV transmittance and stood up better to long term use.  

Here's my own recycled solar cooker using snack food [popcorn] bags, a plastic cake box, and a dark saucepan.

Savannah College of Art and Design have been working on a homeless sleeping project, building three different models:
sleep shelter based upon a folding lawn chair
privacy screen for homeless shelter bunks
privacy tent for transitional housing bed

The off the ground lawn chair shelter looks really good.  I'd add a mylar emergency sleeping bag to keep warmer at night.

Recycled Solar Water
hat tip

Homeless Sleeping Project
hat tip

Originally posted to gmoke on Tue May 20, 2008 at 08:50 PM PDT.


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