Weather file input into SAM

Hi Paul,

I have a weather file with measurements (Year,Month,Day,Hour,Beam,Tdry,RH,Pres,Wspd) that works in the parabolic trough model (with a lot of warnings) but not in the empirical trough model, which is the one that I need, since it stops at error.

I don't know where the problem lies, but could it be related with the column variables I'm using? SAM calculates Tdew through Tdry and RH but maybe I have misplaced them! Could you please help me with this? I've attached here the .csv file!

Thank you very much for the attention!

Best regards,

Dear Francis,

It looks like there are some hours with atmospheric pressure of zero. I'm not sure if that is causing the simulation problems, but you might try changing those values to something reasonable, perhaps by interpolating from data points before and after those times.

Best regards,
Paul.

Hi Paul,
I downloaded some cities weather data from  sam.nrel.gov/weather-data  website as cpv and epw. 
I can see data from library screen, however data can't be seen by SAM.
And there is a message as "Weather data doesn't exist".
I tried another weather data sources for same cities as tmy file.
These files also can't be seen.
Could you help me?
Thank you..

Hi Guzide,

Can you provide more information about the "Weather data doesn't exist" message? Do you see that after running a simulation? What kind of system are you modeling.

If possible, please post a copy of both the .sam file and weather file so I can try replicate the problem.

Best regards,
Paul.