A sensor element for direct radiation measurement

Autor:	P. Bajons, U. Wernhart, H. Zeiler
Rok vydání:	1998
Předmět:	Physics Pyranometer Spectral power distribution Renewable Energy Sustainability and the Environment business.industry Radiation Air mass (solar energy) Concentrator Photodiode law.invention Optics law Angle of incidence (optics) General Materials Science Point (geometry) business
Zdroj:	Solar Energy. 63:125-134
ISSN:	0038-092X
Popis:	A combination of a photodiode with a nonimaging light concentrator is developed to perform measurements of the direct solar radiation component. A prototype composed of low price elements is taken as a starting point to discuss the problems which must be faced when calibrating such sensors. By this the influence of the angle of incidence and spectral distribution (caused by different air mass or varying degree of clearness) of the incident radiation on the behavior of the system is studied. The readings are compared to the calculated (global minus diffuse) readings obtained from two standard star pyranometers. Finally the possibilities for increasing the accuracy of the sensor element and for applying the device are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aff890c2521acd275c19eeb40a429d6a https://doi.org/10.1016/s0038-092x(98)00038-3 Zobrazit plný text záznamu Full Text from ScienceDirect