Estimating monthly means of daily totals of direct normal solar radiation and of total solar radiation on a south-facing, 45 deg, tilted surface
Abstract
A model relating direct normal (DIV) radiation data with total horizontal (TH) radiation data was developed. With the model solar engineers can estimate DN for any site for which TH data is available. Total radiated energy on a tilted surface (TT) is also of interest to solar engineers. Empirically derived functions relating DN and TH and TT and TH are presented.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1977
- Bibcode:
- 1977STIN...7833010B
- Keywords:
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- Attitude (Inclination);
- Luminous Intensity;
- Radiation Measurement;
- Solar Flux Density;
- Incidence;
- Mathematical Models;
- Solar Position;
- Tables (Data);
- Solar Physics