Mutiple Array Spacing at 38deg N Latitude [RE-wrenches]

[Dean T. Newberry]

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Hi Jeremy
Maybe 38" is not the correct spacing.
Let's see, if double the height of the first array is 38", then the 
first array is 19", 4" more than the number I used in the example.
Using 19" as the height  and 22.4 as the elevation angle
the formula for inter-row spacing = 19" / tan 22.4 = 46".
If you use 38, you are likely to reduce your output during December to 1 
hour per day.

If you check EnergyCalc available for download on my website
http://www.talbottsolar.com/ and select Denver CO you will notice 2 
things one is that the Denver latitude is 39.74, and the 30 year 
cloudiness index is .67.

Correcting again,
The lattitude is 39.74
The sun altitude angle at 10:00 AM is 20.90
The height of the first array is 19".
The solution is 19 / tan 20.90 = 49.75"

In the inimitable words of Loren Neubauer, "One calculation is worth one 
thosand estimations".

goFigure deant


Jeremy Rodriguez wrote:

> 
>Dean,
>Thanks a buch!
>I actually came up with 38" spacing today.
>I got that by taking the total height at the rear of the first array and
>doubled it.
>I guess that will work if you say use 36.4
>  
>

-- 
Dean T. Newberry
Marketing and Sales

Quantum Energy Group
265 Applegate School Road, P.O. Box 158
Applegate, Ca. 95703

Email:  deant at dcn.org

Cell:   530 867-2392
Office:  530-878-4585
Fax:     530-878-6685 

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