Hybrid Car – More Fun with Less Gas

How do I determine solar louver angle?

register ::  Login Password  :: Lost Password?
Posted by dold on September 14, 2012, 6:10 pm
I would like to build a solar louver patio cover, but I can't locate the
article that got me interested.

I was thinking of a standard frame, and then a sawtooth pattern in a 2x6 at
the proper angle, with 1x4 louvers angled and spaced according to some
pattern that I don't know how to calculate.

If I am at 38.8,-122.5 1000 feet, Northern California, and the house faces
the sun at 214 degress, how should I orient the louver boards?

In addition to serving as a patio cover, this would also solar-heat the
associated room in the winter and solar-shield the room in the summer.

Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

Posted by dold on September 14, 2012, 8:46 pm
dold@79.usenet.us.com wrote:

This time around, I found two pages that address what I want:
gives some rough static numbers.

lets me put in my numbers, and generate a shading graph.

I thought the general idea was that I could angle the boards "trellis
tilted away from building" at an angle that would provide shade in the
summer, and admit sun in the winter.

Maybe I just don't understand what the graph is showing me, but it doesn't
seem to be as good at the seasons as I expected.

"Tilted Away" would be more aesthetically pleasing, and better for heat in
the winter, but not as good for sun blockage in the summer.

Maybe what I want is the simplest frame possible, with shade cloth in the
summer that I take down in the winter.

Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

This Thread
Bookmark this thread:
  • Subject
  • Author
  • Date
please rate this thread