Abstract

We present modeled results of the luminous and color outputs of a three-layer stack of fluorescent planar concentrators (FPCs). FPCs have the potential to provide sufficient luminous output to illuminate moderate-sized rooms for reasonably-sized collecting areas. It is of course necessary not only that the lumens be sufficient, but also that the light be sufficiently white as to be comfortable. Modeling shows that by use of a stack of three FPCs, one each of violet, green, and red, it is possible to achieve good color rendering and sufficient lighting levels for room illumination.

© 2003 Optical Society of America

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References

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  1. W. H. Weber, J. Lambe, “Luminescent greenhouse collector for solar radiation,” Appl. Opt. 15, 2299–2300 (1976).
    [CrossRef] [PubMed]
  2. S. Selkowitz, M. Rubin, B. Stearns, “Assessment report: fluorescent concentrators for daylighting applications,” Internal Report LBL-15377 (Lawrence Berkeley Laboratory, Berkeley, 1982).
  3. A. Zastrow, V. Wittwer, “Daylighting with fluorescent concentrators and highly reflective silver-coated plastic films: a new application for new materials,” in Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, C. Grangvist, C. M. Lambert, J. J. Mason, eds., Proc. SPIE653, 93–100 (1986).
    [CrossRef]
  4. M. D. Lumb, Luminescence Spectroscopy (Academic, London, 1978).
  5. J. S. Batchelder, A. H. Zewail, T. Cole, “Luminescent solar concentrators. 1: Theory of operation and techniques for performance evaluation,” Appl. Opt. 18, 3090–3110 (1979).
    [CrossRef] [PubMed]
  6. G. Seybold, G. Wagenblast, “New perylene and violanthrone dyestuffs for fluorescent collectors,” Dyes Pigm. 11, 303–317 (1989).
    [CrossRef]
  7. P. D. Swift, G. B. Smith, J. Franklin, “Light to light efficiencies in luminescent solar concentrators,” in Solar Optical Materials XVI, C. M. Lampert, C.-G. Grangvist, eds., Proc. SPIE3789, 29–34 (1999).
    [CrossRef]
  8. A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.
  9. G. Wyszeski, S. Stiles, Color Science, 2nd ed. (Wiley, New York, 1982).

1989

G. Seybold, G. Wagenblast, “New perylene and violanthrone dyestuffs for fluorescent collectors,” Dyes Pigm. 11, 303–317 (1989).
[CrossRef]

1979

1976

Batchelder, J. S.

Cole, T.

Earp, A. A.

A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.

Franklin, J.

P. D. Swift, G. B. Smith, J. Franklin, “Light to light efficiencies in luminescent solar concentrators,” in Solar Optical Materials XVI, C. M. Lampert, C.-G. Grangvist, eds., Proc. SPIE3789, 29–34 (1999).
[CrossRef]

A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.

Lambe, J.

Lumb, M. D.

M. D. Lumb, Luminescence Spectroscopy (Academic, London, 1978).

Rubin, M.

S. Selkowitz, M. Rubin, B. Stearns, “Assessment report: fluorescent concentrators for daylighting applications,” Internal Report LBL-15377 (Lawrence Berkeley Laboratory, Berkeley, 1982).

Selkowitz, S.

S. Selkowitz, M. Rubin, B. Stearns, “Assessment report: fluorescent concentrators for daylighting applications,” Internal Report LBL-15377 (Lawrence Berkeley Laboratory, Berkeley, 1982).

Seybold, G.

G. Seybold, G. Wagenblast, “New perylene and violanthrone dyestuffs for fluorescent collectors,” Dyes Pigm. 11, 303–317 (1989).
[CrossRef]

Smith, G. B.

A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.

P. D. Swift, G. B. Smith, J. Franklin, “Light to light efficiencies in luminescent solar concentrators,” in Solar Optical Materials XVI, C. M. Lampert, C.-G. Grangvist, eds., Proc. SPIE3789, 29–34 (1999).
[CrossRef]

Stearns, B.

S. Selkowitz, M. Rubin, B. Stearns, “Assessment report: fluorescent concentrators for daylighting applications,” Internal Report LBL-15377 (Lawrence Berkeley Laboratory, Berkeley, 1982).

Stiles, S.

G. Wyszeski, S. Stiles, Color Science, 2nd ed. (Wiley, New York, 1982).

Swift, P. D.

P. D. Swift, G. B. Smith, J. Franklin, “Light to light efficiencies in luminescent solar concentrators,” in Solar Optical Materials XVI, C. M. Lampert, C.-G. Grangvist, eds., Proc. SPIE3789, 29–34 (1999).
[CrossRef]

A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.

Wagenblast, G.

G. Seybold, G. Wagenblast, “New perylene and violanthrone dyestuffs for fluorescent collectors,” Dyes Pigm. 11, 303–317 (1989).
[CrossRef]

Weber, W. H.

Wittwer, V.

A. Zastrow, V. Wittwer, “Daylighting with fluorescent concentrators and highly reflective silver-coated plastic films: a new application for new materials,” in Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, C. Grangvist, C. M. Lambert, J. J. Mason, eds., Proc. SPIE653, 93–100 (1986).
[CrossRef]

Wyszeski, G.

G. Wyszeski, S. Stiles, Color Science, 2nd ed. (Wiley, New York, 1982).

Zastrow, A.

A. Zastrow, V. Wittwer, “Daylighting with fluorescent concentrators and highly reflective silver-coated plastic films: a new application for new materials,” in Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, C. Grangvist, C. M. Lambert, J. J. Mason, eds., Proc. SPIE653, 93–100 (1986).
[CrossRef]

Zewail, A. H.

Appl. Opt.

Dyes Pigm.

G. Seybold, G. Wagenblast, “New perylene and violanthrone dyestuffs for fluorescent collectors,” Dyes Pigm. 11, 303–317 (1989).
[CrossRef]

Other

P. D. Swift, G. B. Smith, J. Franklin, “Light to light efficiencies in luminescent solar concentrators,” in Solar Optical Materials XVI, C. M. Lampert, C.-G. Grangvist, eds., Proc. SPIE3789, 29–34 (1999).
[CrossRef]

A. A. Earp, G. B. Smith, P. D. Swift, J. Franklin, “Maximising the light output of a luminescent solar concentrator,” submitted to Sol. Energy.

G. Wyszeski, S. Stiles, Color Science, 2nd ed. (Wiley, New York, 1982).

S. Selkowitz, M. Rubin, B. Stearns, “Assessment report: fluorescent concentrators for daylighting applications,” Internal Report LBL-15377 (Lawrence Berkeley Laboratory, Berkeley, 1982).

A. Zastrow, V. Wittwer, “Daylighting with fluorescent concentrators and highly reflective silver-coated plastic films: a new application for new materials,” in Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, C. Grangvist, C. M. Lambert, J. J. Mason, eds., Proc. SPIE653, 93–100 (1986).
[CrossRef]

M. D. Lumb, Luminescence Spectroscopy (Academic, London, 1978).

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Figures (4)

Fig. 1
Fig. 1

(a) Coordinate system for a fluorescent solar concentration illuminated by a spectrum S(λ). (b) Arrangement of three-layer stack modeled in this study.

Fig. 2
Fig. 2

Luminous outputs of single fluorescent solar collectors with and without mirrors present for (a) violet, (b) green, (c) red dye.

Fig. 3
Fig. 3

Behavior of the color of a three-layer fluorescent solar concentrator with varying concentration of violet (■), green (●) and red (◆) dyes. The dye concentration and luminous output (in parentheses) are indicated. The nonvarying concentration is 120 ppm in all cases.

Fig. 4
Fig. 4

Spectrum of the three-layer fluorescent solar concentrator whose color coordinates are (0.333, 0.333) with violet, green, and red collectors with concentration 95, 24, and 160 ppm, respectively, overlayed with the photopic response of the human eye.

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

ελ, lε0λxπ/2dϕ sin ϕ0asincos χ/sin ϕdθ ×exp-αλ+αml/sin ϕ cos θ,
ελ, L=ε0λEAtπ/20Ldl dϕ sin ϕ×dθ exp-αλ+αml/sin ϕ cos θ,
EA=1-R1-exp-αλtSληeλdλ,
ηeψ=ψλε0λdλε0λdλ ηq,
2ηetLελ, L;α=0-ελ, Ldλ.
2ηe ελ, t;α=0-ελ, tdλ,
2ηewLελ, w;α=0-ελ, wdλ,

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