Titles of Shading Losses Tables (2.1, 0.0, 0.1, 1.0, 1.1, 2.0)

  • eddy9305
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20 Apr 2016 13:02 #4317 by eddy9305
Hi guys, I have a begginer question with my PV model...

With the 3D Shade Calculator, I've been trying to get the shading losses tables. With the 3D design ready, I click on "Analyze" and then on "Diurnal Analysis", and I get 6 tables named 2.1, 0.0, 0.1, 1.0, 1.1, 2.0, respectively.

Can somebody please explain me why do I get 6 tables and what the title of each one means?
Is it something about seasons, the design, or location?


Thank you so much.
Regards from México.

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  • pgilman
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20 Apr 2016 17:02 #4318 by pgilman
Hello,

The 3D Shade Calculator calculates a set of shading losses for each subarray and string in the shading scene. For each active surface, you can assign it a subarray number (1-4) and a string number (1-8). Based on the numbers you listed, it looks like you assigned active surfaces to 3 subarrays numbered 0, 1, and 2, and that each subarray has 3 strings numbered .0, .1, and .3. Table 0.0 is for Subarray 1 String 1, Table 0.1 is for Subarray 1 String 2, etc. (It is confusing that you assign String numbers 1-4, but SAM uses 0-3 for the table numbers. We will fix that in a future version of SAM.)

If you are modeling a single subarray in SAM, you should assign all of the active surfaces the same Subarray number. You can also assign them the same String number if you want do do a simple shade analysis that models the reduction of incident irradiance on the entire subarray rather than individual strings.

Best regards,
Paul.

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  • eddy9305
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21 Apr 2016 08:36 #4319 by eddy9305
Hi Paul,

I really appreciate your answer. I should notice that SAM generates one table for each string. I'll assign them the same string number and see how it goes.

Thank you so much.
Regards from México.

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