Soiling loss characterization for Photovoltaics in buildings: A systematic analysis for the Madrid region

Sanz-Saiz, Carlos; Polo, Jesús; Martín-Chivelet, Nuria; Alonso-García, María del Carmen

doi:10.1016/j.jclepro.2021.130041

Cited by 5 publications

(2 citation statements)

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“…The fact that the soiling layers absorb different portions of the solar spectrum has been reported [28][29][30][31][32][33][34][35][36][37][38][39][40]. The soiling particulates collected from the surface of the modules in the present study have been analyzed [53][54][55], with component constituents (specifically hematite and calcite) that are similar to those reported as having additional absorption in the low-wavelength range of the AM1.5 solar spectrum [51,56,57].…”

Section: Spectral and Physical/compositional Properties Of The Soilin...mentioning

confidence: 60%

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Soiling Spectral and Module Temperature Effects: Comparisons of Competing Operating Parameters for Four Commercial PV Module Technologies

et al. 2022

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The choice of a particular PV technology for best performance is sometimes based upon a single factor or single operating condition. However, many parameters have functionalities that oppose each under actual operating conditions. In this paper, the comparisons of different PV module technologies under moderate environmental conditions (Tropical Climate Zone, Belo Horizonte, Brazil) are explored based upon the two competing parameters of soiling-layer spectral effects and panel operating temperature. Specifically, low-bandgap PV technologies (e.g., Si or Cu(In,Ga)(SSe)2) are reported to have performances less affected by the absorption of incoming sunlight than higher-bandgap absorbers (e.g., a-Si:H or CdTe). However, the opposite is true for operating temperatures, with higher bandgaps having advantages under higher-temperature operating conditions. We present a simple comparative soiling-temperature model with experimental collaborative data to address the following question: What is the controlling parameter of the combination of soiling spectral effects and temperature on lower- and higher-bandgap module technologies? Temperature coefficients are measured for groups of modules for the four technologies having bandgaps ranging from 1.1 to 1.7 eV. Additional optical absorption for the soiling layers in the range of 300 nm to ~600 nm is confirmed by transmission measurements. The data from our soiling monitoring stations indicate that these potential spectral effects are based on consistent differences in soiling ratios and soiling rates. Some differences between the model predications and experimental observations are discussed. This paper reports temperature and soiling regions of “best-of-class” performances for these four commercial PV technologies in this climate region based upon the two competing parameters.

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Section: Spectral and Physical/compositional Properties Of The Soilin...mentioning

confidence: 60%

“…The spectral effects of accumulated dust layers have been previously reported [15,[28][29][30][31][32][33][34][35][36][37][38][39][40]. Specifically, the critical region is in the additional optical absorption in the solar spectrum range of ~300 nm to ~600 nm.…”

Section: Introductionmentioning

confidence: 86%