A method for spectral analysis of concentrated solar radiation

✍ Scribed by A. Neumann; J. Kaluza

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 339 KB
• Volume: 10
• Category: Article
• ISSN: 0960-1481
• DOI: 10.1016/0960-1481(96)00063-8

✦ Synopsis

In the year 1994 the DLR in Cologne inaugurated a 20 kW solar furnace for technological and scientific experiments. One of the main applications of the solar furnace is the research on photochemical reactions using concentrated sunlight. For this purpose exact knowledge of the spectral composition and its local distribution is essential. The evaluation of experiments and the validation of computer codes rely on these informations.

The solar radiation that is concentrated to high flux densities (up to 4 MW/m2) shows shorttime fluctuations and therefore a special measurement technique is required.

It is shown how to use the imaging properties of a Czemey-Turner monochromator in combination with video camera detection to achieve a fast spectral analysis. This measurement is actually done along an intersection line through the focus. Moreover the calibration is described and first test pictures are analysed.