Analysis of drift phenomena in heliostat images

Martha Escobar-Toledo, Camilo A. Arancibia-Bulnes, Manuel I. Peña-Cruz, David Riveros-Rosas, Rodolfo Peón-Anaya, Cuitlauac Iriarte-Cornejo, Rafael E. Cabanillas, Claudio A. Estrada

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

Heliostat image drift is defined as the wandering of the irradiance spot produced by a heliostat on a receiver or observation screen. Two factors producing heliostat image drift have been analyzed theoretically in the present paper: errors in reference position, and time delay. Some regular behavior is found in the drift curves. Maximum deviations from target tend to be linearly dependent with either angular error, or time delay. In particular, the curves produced by this later effect are circular or elliptical. Heliostats at different distances from a tower have been analyzed. For heliostats far from the tower the drift curves due to errors in reference position also have a more or less elliptical shape. Results are presented as dimensionless quantities. Some practical implications of these results are discussed.

Original languageEnglish
Pages385-392
Number of pages8
DOIs
StatePublished - 2012
EventASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology - San Diego, CA, United States
Duration: 23 Jul 201226 Jul 2012

Conference

ConferenceASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology
Country/TerritoryUnited States
CitySan Diego, CA
Period23/07/1226/07/12

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