EnergyCalc still buggy [RE-wrenches]

[Dean T. Newberry]

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Hi Kent,
At Zero Lattitude and horizontal array the peak is at the solstices in 
march and september. The output declines as the sun varies toward south 
or north. I think the calc is ok. We are so north centric it is easy to 
make an invalid assumption.
Negative lattitudes produce results that seem correct.
Try 90 and -90 with horizontal array, I think that is correct also.
I added a line for cloudiness for the guys in oregon.

Does anyone care about the time of use analysis, if not I'll delete it.

cul  deant

Kent Osterberg wrote:

> Dean,
>
> I just downloaded EnergyCalc again.  It's getting better.  I'm glad to 
> see the extra array angle options. But EnergyCalc still doesn't pass 
> my first order accuracy tests!
>
> I selected a latitude of 0 because it is easy to visualize how the 
> data should behave.
>
> For instance, at 0 degrees latitude an array that is horizontal will 
> have more summer output than winter output because the summer days are 
> longer. In the summer there should be some output before 6 am.  In the 
> winter there shouldn't be much, if any, output until 7:00 am.
> For a given hour, say 9:00 am, the summer output should be more than 
> the winter output because the sun will be higher in the sky.
> EnergyCalc says the opposite for these issues.  This can't be - there 
> must still be a bug.  I suspect that there is a  minus sign error 
> associated with the Earth's declination angle.
>
> Good Luck.  I'm sure that a lot of people will make good use of this 
> tool when you get it finished.
>
> Kent Osterberg
> Blue Mountain Energy
>
>
>

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