DISC Model


THE MODEL

The DISC model was authored by Dr. E. Maxwell. Daryl Myers did the Excel@ Spreadsheet implementation. The user supplies hourly average measured global horizontal data. The algorithm uses empirical relationships between the global and direct clearness indices (Kt, Kn) to estimate the direct beam component. Computations are based on the solar geometry for the hour and clearness indices. A reference on the performance of the model is:




REFERENCES




DOWNLOAD THE MODEL




Please send questions and comments to Webmaster

Disclaimer and copyright notice.


Return to RREDC Home Page ( http://www.nrel.gov/rredc )