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Optical evaluation of heliostat mirrors using caustics
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10.1063/1.4826195
/content/aip/journal/jrse/5/5/10.1063/1.4826195
http://aip.metastore.ingenta.com/content/aip/journal/jrse/5/5/10.1063/1.4826195

Figures

Image of FIG. 1.
FIG. 1.

The global coordinate system centered on the target. is the unit vector to the sun, is the vector to a point on the reflector, and is the vector normal to the surface of the reflector facing the target.

Image of FIG. 2.
FIG. 2.

Image of a square parabola: (a) Image from caustics with 3600 rays. (b) Image from SolTRACE with 10 000 rays. (c) Superposition of Figs. 2(a) and 2(b) .

Image of FIG. 3.
FIG. 3.

Percent of energy captured for various aperture radii at the target.

Image of FIG. 4.
FIG. 4.

Average flux on receiver plane as a function of /: (a) Effect of / on day 76 at H = 12. (b) Effect of / on day 173 at H = 12. (c) Effect of / on day 355 at H = 12. (d) Effect of time on day 173 for  = 0.8. Note the change in ordinate scale.

Image of FIG. 5.
FIG. 5.

Results for paraboloid of revolution when .

Image of FIG. 6.
FIG. 6.

Image at the target for a paraboloid of revolution when .

Image of FIG. 7.
FIG. 7.

Effect of varying ratio on image size of sun reflected on a paraboloid of revolution.

Image of FIG. 8.
FIG. 8.

Image from a spherical reflector.

Tables

Generic image for table
Table I.

Moments of image point distributions on aperture obtained from Caustics and SolTRACE.

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/content/aip/journal/jrse/5/5/10.1063/1.4826195
2013-10-17
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical evaluation of heliostat mirrors using caustics
http://aip.metastore.ingenta.com/content/aip/journal/jrse/5/5/10.1063/1.4826195
10.1063/1.4826195
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