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Two values of GCR appear in the Report
https://forum.pvsyst.com/viewtopic.php?f=24&t=4638
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Author:  mgrms [ Mon Dec 16, 2019 5:27 pm ]
Post subject:  Two values of GCR appear in the Report

Hello,

In the report of my simulations using bifacial modules, the GCR value that appears in "Backtracking strategy" is different from the one that appears in "Bifacial system". I did the maths, and it appears that it is because they do not take into account the same parameters to calculate the collector width :
- in "Backtracking strategy" : L = length module + module spacing (defined in near shadings)
- in "Bifacial system" : L = length module + module spacing (defined in near shadings) + frame (also defined in near shadings)
In both situation the pitch is equal.

Which GCR should I take into account in the end ?
I would also be glad to hear any other explanation for the difference of GCR.

Thank you for your help !

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