Off-ideal Array Tilt Output [RE-wrenches]

[Don Loweburg, Offline]

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In a message dated 4/3/2004 10:20:44 AM Pacific Standard Time, 
tony at appliedsolarenergy.com writes:
According to my calculations: (using the weather data for Albuquerque)
the annual total for tilt at 30 degrees, south is 
5420 kwh (for a specific combination of panels and inverter)
and at tilt 26 degrees, azimuth 50 degrees west of south the annual total is
5002 kwh
so the relative performance is 92.3%.



I ran the simulation using PV Design Pro and got the result that the off 
south orientation yields 93 % of true south yield.  So at least our software 
yields similiar results, now for the real world. 

In my experience the software is doing a good job for me predicting actual vs 
real output.


Tim Townsend has some issues with Design Pro and the way the program sizes 
wire, but for me the real- theoretical is close enough --(a few percent 
generally)

best, Don

[Non-text portions of this message have been removed]

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