Optimization of Multicolor Photothermal Power Plants in the Solar System: A Finite - Time Thermodynamic Approach

Bădescu, Viorel; Dinu, C.

doi:10.1051/jp3:1996118

Cited by 5 publications

(1 citation statement)

References 21 publications

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“…The mirror arrangement ensures that each black-body absorber both absorbs light over a narrow range of wavelengths, determined by the spectrally sensitive mirrors, and also has a net emission over the same wavelength range [3]. An infinite series of multi-colour photothermal converters yield η PT = 0.868 for terrestrial applications [4], and even higher efficiencies in the case of some space applications [5,6].…”

Section: Introductionmentioning

confidence: 99%

Spectrally and angularly selective photothermal and photovoltaic converters under one-sun illumination

Bădescu

2005

J. Phys. D: Appl. Phys.

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The efficiency of both photothermal and photovoltaic (PV) converters may be increased if their emittance is strongly forward-peaked. This technology was recently proposed for photothermal converters by Blanco et al (2004 Solar Energy 76 683). Ideal angularly and spectrally selective surfaces were defined in this paper. Optimization procedures for appropriately defined spectral and angular quantities were developed to maximize solar energy conversion efficiency. The optimization procedure for photothermal conversion is similar but formally simpler than that used by Blanco et al. The optimization procedure and the results shown here for PV conversion are new. The potential of the proposed technology to increase conversion efficiency is more important in the case of photothermal conversion (maximum possible increase of efficiency is about 0.3) than in the case of PV conversion (possible increase is about 0.1). This potential is weakly dependent on the irreversibilities inside both types of solar converters.

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Section: Introductionmentioning

confidence: 99%