Planar solar concentrator featuring alignmentfree total-internal-reflection collectors and an innovative compound tracker

Tun-Chien Teng, Wei Che Lai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, combining a mechanical singleaxis tracker and scrollable prism sheets, can achieve a performance on a par with dual-axis tracking while reducing the cost of the tracking system and increasing its robustness. The alignment-free TIR collectors are assembled on the waveguide without requiring alignment, so the planar concentrator is relatively easily manufactured and markedly increases the feasibility for use in large concentrators. Further, the identical TIR collector is applicable to various-sized waveguide slab without requiring modification, which facilitates flexibility regarding the size of the waveguide slab. In the simulation model, the thickness of the slab was 2 mm, and its maximal length reached 6 m. With an average angular tolerance of ±0.6° , and after considering both the Fresnel loss and the angular spread of the sun, the simulation indicates that the waveguide concentrator of a 1000-mm length provides the optical efficiencies of 62-77% at the irradiance concentrations of 387-688, and the one of a 2000-mm length provides the optical efficiencies of 52-64.5% at the irradiance concentrations of 645-1148. Alternatively, if a 100-mm horizontally staggered waveguide slab is collocated with the alignment-free TIR collectors, the optical efficiency would be greatly improved up to 91.5% at an irradiance concentration of 1098 (Cgeo = 1200X).

Original languageEnglish
Pages (from-to)A1818-A1834
JournalOptics Express
Volume22
Issue number25
DOIs
Publication statusPublished - 2014 Dec 15

Fingerprint

concentrators
accumulators
waveguides
slabs
alignment
irradiance
prisms
flexibility
sun
simulation
costs

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Planar solar concentrator featuring alignmentfree total-internal-reflection collectors and an innovative compound tracker. / Teng, Tun-Chien; Lai, Wei Che.

In: Optics Express, Vol. 22, No. 25, 15.12.2014, p. A1818-A1834.

Research output: Contribution to journalArticle

@article{bb86361ef8004e95af38c0530fdc4634,
title = "Planar solar concentrator featuring alignmentfree total-internal-reflection collectors and an innovative compound tracker",
abstract = "This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, combining a mechanical singleaxis tracker and scrollable prism sheets, can achieve a performance on a par with dual-axis tracking while reducing the cost of the tracking system and increasing its robustness. The alignment-free TIR collectors are assembled on the waveguide without requiring alignment, so the planar concentrator is relatively easily manufactured and markedly increases the feasibility for use in large concentrators. Further, the identical TIR collector is applicable to various-sized waveguide slab without requiring modification, which facilitates flexibility regarding the size of the waveguide slab. In the simulation model, the thickness of the slab was 2 mm, and its maximal length reached 6 m. With an average angular tolerance of ±0.6° , and after considering both the Fresnel loss and the angular spread of the sun, the simulation indicates that the waveguide concentrator of a 1000-mm length provides the optical efficiencies of 62-77{\%} at the irradiance concentrations of 387-688, and the one of a 2000-mm length provides the optical efficiencies of 52-64.5{\%} at the irradiance concentrations of 645-1148. Alternatively, if a 100-mm horizontally staggered waveguide slab is collocated with the alignment-free TIR collectors, the optical efficiency would be greatly improved up to 91.5{\%} at an irradiance concentration of 1098 (Cgeo = 1200X).",
author = "Tun-Chien Teng and Lai, {Wei Che}",
year = "2014",
month = "12",
day = "15",
doi = "10.1364/OE.22.0A1818",
language = "English",
volume = "22",
pages = "A1818--A1834",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "25",

}

TY - JOUR

T1 - Planar solar concentrator featuring alignmentfree total-internal-reflection collectors and an innovative compound tracker

AU - Teng, Tun-Chien

AU - Lai, Wei Che

PY - 2014/12/15

Y1 - 2014/12/15

N2 - This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, combining a mechanical singleaxis tracker and scrollable prism sheets, can achieve a performance on a par with dual-axis tracking while reducing the cost of the tracking system and increasing its robustness. The alignment-free TIR collectors are assembled on the waveguide without requiring alignment, so the planar concentrator is relatively easily manufactured and markedly increases the feasibility for use in large concentrators. Further, the identical TIR collector is applicable to various-sized waveguide slab without requiring modification, which facilitates flexibility regarding the size of the waveguide slab. In the simulation model, the thickness of the slab was 2 mm, and its maximal length reached 6 m. With an average angular tolerance of ±0.6° , and after considering both the Fresnel loss and the angular spread of the sun, the simulation indicates that the waveguide concentrator of a 1000-mm length provides the optical efficiencies of 62-77% at the irradiance concentrations of 387-688, and the one of a 2000-mm length provides the optical efficiencies of 52-64.5% at the irradiance concentrations of 645-1148. Alternatively, if a 100-mm horizontally staggered waveguide slab is collocated with the alignment-free TIR collectors, the optical efficiency would be greatly improved up to 91.5% at an irradiance concentration of 1098 (Cgeo = 1200X).

AB - This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, combining a mechanical singleaxis tracker and scrollable prism sheets, can achieve a performance on a par with dual-axis tracking while reducing the cost of the tracking system and increasing its robustness. The alignment-free TIR collectors are assembled on the waveguide without requiring alignment, so the planar concentrator is relatively easily manufactured and markedly increases the feasibility for use in large concentrators. Further, the identical TIR collector is applicable to various-sized waveguide slab without requiring modification, which facilitates flexibility regarding the size of the waveguide slab. In the simulation model, the thickness of the slab was 2 mm, and its maximal length reached 6 m. With an average angular tolerance of ±0.6° , and after considering both the Fresnel loss and the angular spread of the sun, the simulation indicates that the waveguide concentrator of a 1000-mm length provides the optical efficiencies of 62-77% at the irradiance concentrations of 387-688, and the one of a 2000-mm length provides the optical efficiencies of 52-64.5% at the irradiance concentrations of 645-1148. Alternatively, if a 100-mm horizontally staggered waveguide slab is collocated with the alignment-free TIR collectors, the optical efficiency would be greatly improved up to 91.5% at an irradiance concentration of 1098 (Cgeo = 1200X).

UR - http://www.scopus.com/inward/record.url?scp=84919682711&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919682711&partnerID=8YFLogxK

U2 - 10.1364/OE.22.0A1818

DO - 10.1364/OE.22.0A1818

M3 - Article

AN - SCOPUS:84919682711

VL - 22

SP - A1818-A1834

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 25

ER -