This got posted in the E+E forum. Here's a link to that thread:
http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=115&topic_id=31258HUDSON -- Mixing a passion for recycling and environmentally friendly technology, Duane Sanborn is putting solar heat in a portable window space heater.
It's an idea he has been kicking around for 30 years, said Sanborn, who runs a recycling business, Material Management, from an old factory building where renovations are being interwoven with solar-powered designs.
Sanborn believes rising energy prices are ripening consumer interest in a low-cost alternative to heating with gas and oil. Solar panels that can be set in a window on winter days and put away in the evenings can conserve energy and save money, he said.
Solar space heaters are just one of the ideas Sanborn is pursuing at the building on Mechanic Street where he revived a recycling business he and his wife, Cindy Sanborn, started from a building on Treat Highway in Adrian. After closing the business in Adrian 10 years ago, they began renovating the building in Hudson in January 2002 to continue pursuing a goal of moving society toward a sustainable economy in balance with the environment.
http://www.freep.com/news/mich/solar15e_20050915.htm