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Proceedings Paper

200-W solar energy delivery with optical fiber bundles
Author(s): Dawei Liang; Yuri Nunes; Luis Fraser Monteiro; M. L. Fraser Monteiro; Manuel Collares-Pereira
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Paper Abstract

Flexible optical fibers and fiber bundles can be used to transfer solar energy to a desirable place, where it could be used either to pump a laser crystal or to carry out other useful mechanical, chemical or thermal processings. Two flexible fiber-optic bundles were built. Each bundle consists of 19 optical fibers of 1.5 mm diameter each. The input section of each single fiber is polished to form a hexagonal column. When the input columns were joined together, two compact fiber-optic bundles were formed, leaving no dead space between the fibers and hence, the concentrated solar energy was transmitted without extra loss. Two off-axis parabolic mirrors with hexagonal form were held onto a solar tracker which continuously tracks the Sun. With an incident intensity of 650 W/cm2, each primary mirror captured 143 W solar energy and concentrated it into a light spot of hexagonal form, which matches well with the input area of the fiber-optic bundle. Solar energy of 100 W was successfully delivered by each bundle, with transmission efficiency of 70%. The two fiber bundles were also combined to form a large bundle for 200 W solar energy delivery.

Paper Details

Date Published: 3 October 1997
PDF: 8 pages
Proc. SPIE 3139, Nonimaging Optics: Maximum Efficiency Light Transfer IV, (3 October 1997); doi: 10.1117/12.279217
Show Author Affiliations
Dawei Liang, Univ. Nova de Lisboa (Portugal)
Yuri Nunes, Univ. Nova de Lisboa (Portugal)
Luis Fraser Monteiro, Univ. de Lisboa (Portugal)
M. L. Fraser Monteiro, Univ. de Lisboa (Portugal)
Manuel Collares-Pereira, National Institute of Engineering and Industrial Technology (Portugal)


Published in SPIE Proceedings Vol. 3139:
Nonimaging Optics: Maximum Efficiency Light Transfer IV
Roland Winston, Editor(s)

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