[RE-wrenches] S Facing Mods on E - W slopes

[William Miller]

Drake:

 

I suggest you find a CAD solution.  You can study the shading at specific
times and some programs will animate.

 

William

 

 

Gradient Cap_mini
Lic 773985
 <http://www.millersolar.com/> millersolar.com
805-438-5600

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Drake
Sent: Tuesday, September 23, 2014 7:05 AM
To: RE-wrenches
Subject: [RE-wrenches] S Facing Mods on E - W slopes

 

Hello Wrenches,

We have an installation where we are putting modules on the east and west
slopes of a south facing roof. The roof slopes are 18 degrees. The tops and
bottoms of the modules will follow the slope of the roof.

There will be 3 rows of modules. I have heard that the shading is different
in this scenario, that the shadows will be triangular and perhaps longer.
How can the shading be calculated with this arrangement?  Is there a rule of
thumb to follow other than the normal of three times the height difference?

Thanks,

Drake




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