Actas de congresos
Numerical correction for the diffuse solar irradiance by the melo-escobedo shadowring measuring method
30th ISES Biennial Solar World Congress 2011, SWC 2011, v. 5, p. 3692-3703.
Centro Paula Souza
Universidade Estadual Paulista (UNESP)
The present paper deals with numerical corrections factors proposed as a function of the clearness index in order to correct the diffuse solar irradiance measured with the Melo-Escobedo Shadowring Measuring Method (ME shadowring). The global irradiance was measured by an Eppley - PSP pyranometer ; direct normal irradiance by an Eppley-NIP pyrheliometer fitted to a ST-3 sun tracking device and the diffuse irradiance by an Eppley-PSP pyranometer fitted to a ME shadowring. The validations were performed by the MBE and RMSE statistical indicators. The results showed that the numerical correction factors were appropriate to correct the shadowring diffuse irradiance.
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