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PostPosted: Mon Mar 09, 2020 10:19 am 

Joined: Thu Mar 05, 2020 5:32 pm
Posts: 2
Hi

I've a question regarding the calculation sequence when importing POA-data and ambient temperature, measured on site. The actual imported POA data is not used in the simulation, instead the POA irradiance is re-calculated with transposition models.

Now I want to know if the following sequence is correct when the transposition model of the project is set Perez-Ineichen.

1) POA measured --> GHI, DHI calculated via Perez retro-transposition
2) GHI, DHI calculated --> POA calculated via Perez transposition

Thanks in advance.


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