Jump to content

The clearness index problem


Recommended Posts

Dear Sir,

I imported ASCII meteo file without success. It says' The clearness index of the best days is very high with respect to the clear day model.' I don't have time shift or location problems.

PVsyst is giving as a solution 'Please check the units or the solarimeter calibration' but I don't know how to do. So could you please help me regarding above problem?

e-mail: onur.gunes@solarian.com.tr

Best Regards


Link to comment
Share on other sites

  • 11 months later...
  • 4 weeks later...

Meteo data are subject to some "rules".

For example, we have a model for the clear sky conditions, with an accuracy of 2-3% towards high values.

The meteo data cannot be too high with respect to this model. If so, they are doubtful, you should choose another meteo data source.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...