[RE-wrenches] Spacing between ground mounted sub-arrays at 48.5 degrees N latitude

[Mac Lewis]

I second Chris's suggestion of Sketchup.  Its very easy to use and does a
great job modeling stuff like this.  There is a free version from Google
that is more than adequate for this.

Good luck.


On Sun, Feb 16, 2014 at 3:08 PM, Chris Mason
<cometenergysystems at gmail.com>wrote:

> I use Sketchup for these calculations now. It will do real shadows at any
> time of any day you want.
> If you are not familiar with it, send me the exact Google Earth
> coordinates and I will mock something up for you.
>
>
> On Sun, Feb 16, 2014 at 5:35 PM, Bob Clark <bclark at solar-wind.us> wrote:
>
>> Wrenches:
>>
>> I have a customer who wants 40 solar modules on ground mounts (not poles)
>> in an area that slopes to the ESE at 7 degrees.  Putting these modules on
>> one ground mount assembly so that the modules are in a 0 degree slope East
>> to West would leave the east end about 20 feet in the air.  Not acceptable
>> as the customer wants a profile as low as possible for aesthetic reasons
>> plus the wind can be quite strong on occasion.
>>
>> So, I am trying to figure out how far apart 5, 8 module sub-arrays
>> (landscape orientation 2 E-W by 4 N-S tilted at 35 degrees S from the
>> horizontal) would have to be North to South and East to West so that they
>> are low profile yet do not shade each other on the winter solstice at 48.5
>> degrees N latitude.  These calculations are complicated by the ground
>> sloping to the ESE at 7 degrees.
>>
>> Can anyone point to an online calculator that takes into account the
>> slope of the ground?  Or can anyone help me with the geometry of this
>> situation.  I have gone around in circles and thoroughly confused myself.
>>
>> Thanks in advance.
>>
>> Bob Clark
>> bclark at solar-wind.us
>>
>>
>>
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>
>
> --
> Chris Mason
> President, Comet Systems Ltd
> www.cometenergysystems.com
> Cell: 264.235.5670
> Skype: netconcepts
>
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-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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