[Thermal Losses - Default Options]

Hi,

For thermal loss factors at this point:

According to their own measurements, some users proposed, when using standard meteo values such those in the US TMY2 data (usually around 4-5 m/sec on an average in continental - not-coast places), the following U-values:

Uc = 25 W/m²·k, Uv = 1.2 W/m²·k / m/s

How are these values calculated?

Does PV Syst recommend a way this can be calculated?

[Merge or combine meteo data files]

Thanks Andre.

Hi,

For thermal loss factors at this point:

According to their own measurements, some users proposed, when using standard meteo values such those in the US TMY2 data (usually around 4-5 m/sec on an average in continental - not-coast places), the following U-values:

Uc = 25 W/m²·k, Uv = 1.2 W/m²·k / m/s

How are these values calculated?

Does PV Syst recommend a way this can be calculated?

[Merge or combine meteo data files]

How does one easily Merge or combine meteo data files?

I want to combine Meteonorm with SolarGIS with equal weighting.