Optical in-situ assessment of a nonimaging secondary concentrator in a solar tower

Abraham Kribus, Andreas Timinger

Research output: Contribution to journalArticlepeer-review

Abstract

A method for remote optical measurement of the geometry of nonimaging concentrators is presented. A concentrator installed in a solar tower was measured by observation of transmission patterns from the heliostat field, and comparison of the measured patterns to a ray tracing simulation. The actual geometry of the concentrator was derived from optimization of the match between real and simulated patterns. The measurement was sensitive and accurate enough to detect small errors in the concentrator geometry, such as 1 millimeter in linear dimension and 0.1° in concentrator tilt angle. The measurement procedure is simple and can be easily adapted to a wide range of nonimaging optical systems.

Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalJournal of Solar Energy Engineering, Transactions of the ASME
Volume124
Issue number3
DOIs
StatePublished - Aug 2002

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