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Non-Tech : Alternative energy -- Ignore unavailable to you. Want to Upgrade?

To: Triffin who wrote (7709)	4/1/2010 7:14:05 PM
From: Doren	Respond to of 16955

Curtains absorb the heat inside your house. So if your house is hot the curtains will make it hotter. Better to stop the heat at the window. Come to think though the window would probably heat up a bit. If it's double paned that would solve that problem. Best book I've seen on current passive tech: amazon.com Former sub-contractor here. Worked on many of the most expensive homes in Rancho Sante Fe (San Diego). I like simple.

To: Triffin who wrote (7709)	4/2/2010 11:27:21 AM
From: Eric	Read Replies (1) \| Respond to of 16955

Well the problem Triff is you are trying to stop light from coming into a house. The shades need to be on the outside of the house or building. Once light goes through the glass and strikes an object inside shortwave radiation gets turned into long wave radiation depending on the amount of reflectance of the object. Of course that's just how greenhouses work and passive solar thermal in your home. Even with white colored shades you will still have "trapped" over 80% of that solar energy inside the house. I get a kick out of seeing homes with big air conditioners and no shades! If they only understood the problem they wouldn't have to spend so much on air conditioning. Doren, Good comments!