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Showing results for tags 'variables'.
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Hi all, I'm trying to find a variable that gives the Gobal Inclined Irradiance in actual plane of array AFTER backtracking. The closest I found in PVsyst output are: GlobInc: The problem of this one is that I understand it gives the idealised GInc if the trackers were always tracking the sun (i.e. without considering backtracking early morning or later afternoon). GlobEff: The problem is that this gives the effective global Inc after all optical losses. I need the value BEFORE optical losses but after Backtracking. Any advice? Basically I need the GHI transposed to the actual tilt angle, without any corrections. Regards, Ahmad -
Hi all, I want to know how PVSyst calculates TArray (for monofacial and bifacial modules) As I can see in: https://www.pvsyst.com/help/thermal_loss.htm 0) This is the formula that uses PVSyst. Is it right? 1) Tcell is TArray? 2) U = to the value introduced by the user (for instance U=29 W/m2K) , or U is calculated (ignoring the fixed value introduced by the user)? 3) Alpha is always 0.9? 4) Ginc: Which variable is? Ginc = GlobInc ? Ginc =GlobEff ? Ginc = (GlobInc + GlobBak) ? Ginc = (GlobInc + BifacialityFactor * GlobBak) ? 5) Effic is always 10%? I enclose different calculations I have made and the differences between calculations Thank you in advance for your valuable support.
