ManPC

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.

Hi I would like to know if the terrain shadows (far shading losses) are included in the TMY PVGIS 5.1/5.2 imported data when a .SIT is created. Thank you.

Hi Michele, Thank you for your quick response. The version is 7.2.17 rev.26789

Hello everybody! I would really appreciate some help related to the following issue between the monthly values obtained by API PVGIS TMY (tool in PVSyst) and the data from PVGIS web: I noted that the monthly values obtained by PVGIS API TMY do not correspond to the PVGIS 5.1 or 5.2 version. Why the values are not equal -at least between API and PVGIS 5.1- (in some months is equal or nearly, but, would not it be the same data/results?) PVSyst is using a different/older version of API PVGIS when importing the monthly data? Thank you for your support. Manuel.