interrow shading [RE-wrenches]

[Ryan Mayfield]

This table was given to me a few years ago from Jeff down at DP&W.  He said he got it out of an old Arco manual so it's been around for awhile!

I have tested the spacing factors at my latitude, ~45, by looking at an existing array on a flat roof with a Pathfinder, and the results seem good. From Peter's approach, the 35 degree column seems to be consistent as well. I would love to get a report from somebody at ~40 degrees as I would think there would be a difference in the "No shading after 9AM" column for 35 and 40 degrees. I would expect it to be closer to 2.5 time the height.

I hope the formatting comes out OK, contact me off list if you can't read it and I can send the attachment.

Ryan

Formula:  DISTANCE = HEIGHT x SPACING FACTOR (SF)

Latitude	For no shading after 8:00am	For no shading after 9:00am
 20deg	        SF=3	                                  -
 30deg	        SF=5	                                 SF=1.8
 35deg	        SF=6.5	                                SF=2.2
 40deg	        SF=10	                                SF=2.2
 45deg	        SF=23	                                SF=3



>
>It would be great if someone would come up with a table that gives the
>X-factor, based on latitude and no-shade hours, but I haven't been able to
>find one and if any one has found such a table, I for one would be greatly
>indebted if they would share it.
>
>
>
>


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