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Solar Field Heliostat Selection Based on Polygon Optimization and Boundaries

 
: Schöttl, P.; Rohani, S.; Leonardi, E.; Pisani, L.; Les, I.; Mutuberria, A.; Nitz, P.

:

Richter, Christoph (Ed.):
SolarPACES 2018, 24th International Conference on Concentrating Solar Power and Chemical Energy Systems : 2-5 October 2018, Casablanca, Morocco
New York, N.Y.: AIP Press, 2019 (AIP Conference Proceedings 2126)
ISBN: 978-0-7354-1866-0
Art. 030053, 8 pp.
International Conference on Concentrating Solar Power and Chemical Energy Systems (SolarPACES) <24, 2018, Casablanca>
English
Conference Paper
Fraunhofer ISE ()
Thermische Systeme und Gebäudetechnik; solar thermal power plants; Solarthermie; Materialforschung und Optik; Thermische Kollektoren und Komponenten

Abstract
A novel methodology for the design of heliostat fields is presented, based on the selection of heliostats from an oversized field by means of a polygon. To obtain the ideal field shape, the polygon vertices are optimized with an evolutionary algorithm. The objective function calculates a weighted tradeoff between annual optical efficiency and ground usage and is applied to the entire field instead of individual heliostats. Various other figures of merit could be readily integrated. To be able to deal with complex shaped land available for the Solar Tower plant, area boundaries are taken into account during the optimization phase. The application of the methodology is demonstrated by means of a reference scenario and multiple variations of parameters and area boundaries. The polygon selection creates smooth, coherent heliostat fields with high performance regarding the objectives, while solving several practical issues in the heliostat field design phase at the same time.

: http://publica.fraunhofer.de/documents/N-565199.html