Abstract

We correct an equation, calculating the radiating power from a selective solar absorber, which is missing an extra factor of π. We also correct the results of the affected figures.

© 2012 OSA

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References

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  1. K. D. Olson and J. J. Talghader, “Absorption to reflection transition in selective solar coatings,” Opt. Express20(S4Suppl 4), A554–A559 (2012).
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Figures (3)

Fig. 3
Fig. 3

(a) The ideal thermal equilibrium temperature between a selective absorber and the sun with no concentration (C=1) as a function of transition wavelength. As the emissivity increases notice that the optimum transition wavelength for a certain operating temperature is shifted to shorter wavelengths. AM0 will have a very similar result to this case.

Fig. 4
Fig. 4

Thermal equilibrium temperature as a function of transition wavelength and emissivity for the AM1.5 solar spectrum with no concentration (C=1)

Fig. 5
Fig. 5

Thermal equilibrium temperature as a function of transition wavelength for a selective absorber with an emissivity of 5% under AM1.5 illumination at different concentrations. The optimal transition wavelength is highly dependent on the concentration of incoming radiation.

Equations (2)

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P o u t = 0 2 π 0 π 2 ( 0 λ s α u λ d e v i c e ( T d e v i c e ) d λ + λ s ε u λ d e v i c e ( T d e v i c e ) d λ ) sin ( θ ) cos ( θ ) d θ d φ P o u t = π ( 0 λ s α u λ d e v i c e ( T d e v i c e ) d λ + λ s ε u λ d e v i c e ( T d e v i c e ) d λ )
P i n = π C ( 0 λ s α u λ s o l a r ( T s u n ) d λ + λ s ε u λ s o l a r ( T s u n ) d λ )

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