interrow shading [RE-wrenches]

[Darryl Thayer]

HI Kurt
I use the profile angle charts.  This is for south
facing arrays, and gives the PROJECTION of the
altitude angle of the sun onto a north-south plane. 
These profile angles can be calculated from "Beckman
and Kline" book on solar engineering UofWisc.  I
constructed myself a set of them for my latitude, (45
degrees).  Then using F-chart or RETscreen I make a
few runs to do a parametric stdudy of the effect of
shading. (I assume the loss from the module due to
shading is the same as the fraction of the single
shaded cell. (see Bill Brooks course)  

If my modules are not south facing, I could do the
same for perhaps each 15 degrees off south, but I have
not done this as of yet.
Darryl
 
--- Kurt Nelson <sunwise at cheqnet.net> wrote:

> 
> Can anyone recommend a web page or other resource
> for calculating
> interrow shading?  Something that factors in the
> latitude at the site
> (not just CA).
> 
> Much thanks in advance -- Kurt
> 
>
----------------------------------------------------------------
> 
> Kurt Nelson
> PO Box 309
> Cornucopia, WI 54827
> 715-742-3406
> sunwise at cheqnet.net
> 
> 
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