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direct normal irradiance (PV) (DNI)

Direct Normal Irradiance (DNI) is the direct solar irradiance incident on a surface that is perpendicular to the plane of irradiance.

DNI irradiance is about direct line between the sun with its current position and irradiance. The DNI value can be optimized by tracking the irradiation surface. This technique is used in photovoltaic systems by tracking the solar modules to the irradiation angle of the sun, so that they are always perpendicular to the irradiation angle of the sunlight.

Englisch: direct normal irradiance (PV) - DNI
Updated at: 16.09.2014
#Words: 79
Links: irradiance, line, current, tracking,
Translations: DE

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