Degradation of optical properties of solar collectors due to the ambient dust deposition as a function of particle size

Biryukov, S.

doi:10.1016/0021-8502(96)00091-2

Cited by 27 publications

(8 citation statements)

References 1 publication

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“…These larger particles are in the atmosphere and depositing, but are not being included in the measurements of airborne particulates or the calculations of deposition. Previous experiments on solar energy systems have seen a peak in deposited size distributions around 20 mm (Roth and Anaya 1980;Biryukov 1996;Cabanillas and Mungu ıa 2011), indicating that these larger particles are present and significant.…”

Section: Comparison Between Observations and Modelmentioning

confidence: 85%

Assessment of PM dry deposition on solar energy harvesting systems: Measurement–model comparison

Boyle

Flinchpaugh

Hannigan

2016

Aerosol Science and Technology

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Soiling of solar energy systems, or the accumulation of particulate matter on their surface, can cause significant losses in energy conversion efficiency. However, predicting these losses is still not done, as no methods exist. Field measurements of mass accumulation and airborne PM 10 were conducted for more than one year at two sites in the Front Range of Colorado with the objective of developing soiling prediction models. For this study, only dry deposition was examined. The two sites, despite having different PM 10 concentrations, have indistinguishable average effective deposition velocities of 2 cm/s, although a large spread in the data was noted. These results are similar to results found in other deposition studies. The observed effective deposition velocities indicate that coarse particles are a dominant player in mass accumulation, and sampled airborne size distributions support this hypothesis. Using a model to calculate dry deposition yielded better agreement with deposition than a simple average deposition velocity data fit. This model combined with other research and models can be used for estimating average soiling rates and is most useful over long time scales especially months to years or longer.

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Section: Comparison Between Observations and Modelmentioning

confidence: 85%

Assessment of PM dry deposition on solar energy harvesting systems: Measurement–model comparison

Boyle

Flinchpaugh

Hannigan

2016

Aerosol Science and Technology

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“…In desert environments, dust deposition mass is dominated by coarse mineral particles, several microns to tens of microns in diameter (Figgis et al 2017;Qasem et al 2014;Biryukov 1996). For airborne particles of such size, both inertial and viscous forces affect their impaction rate, whereas Brownian motion is unimportant (Friedlander 1977;Aluko and Noll 2006); (Kim et al 2000).…”

Section: Depositionmentioning

confidence: 99%

Dominant environmental parameters for dust deposition and resuspension in desert climates

Figgis

Guo

Javed

et al. 2018

Aerosol Science and Technology

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Field studies of dry deposition usually measure dust accumulation over periods of days or weeks. However, long measurement periods obscure the effects of meteorological conditions on the deposition rate. Previously we developed an "outdoor soiling microscope" (OSM) in order to measure dust deposition and detachment every 10 min in the field. In this study a greased/ ungreased pair of OSMs was deployed for 51 days in the desert climate of Doha, Qatar. Stepwise regression analysis was performed to quantify the explanatory power of meteorological parameters on dust deposition and detachment rates. It was found that wind speed dominated deposition and rebound of dust particles, and produced a distinctive "threshold" response in deposition. The dry deposition results were highly consistent with a model by Kim et al. (2000) derived from outdoor experiments. By comparison, relative humidity and particulate matter concentration had less influence on dust flux rates.

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“…Natural dust type and size are local site-dependent and may follow seasonal fluctuation. It is important to notice that the average dust size deposited at the module surface varied with the time of deposition (Biryukov 1996 ). Due to particle-flow (wind effect) interaction, large particles are removed more effectively than small ones (Weber et al 2014 ; Hinds 1999 ).…”

Section: Resultsmentioning

confidence: 99%

“…Hinds ( 1999 ) demonstrated that wind cleaning is very ineffective for particles with a diameter smaller than 50 μm and the primary reason is the adhesion force of the particles which is considerably higher for small particles than the removal force. For this reason, the size of the particle can vary significantly with the time, which was shown by Biryukov ( 1996 ). The author examined a natural dust sample collected from the Negev, Israel, using particle microscope analyses.…”

Section: Introductionmentioning

confidence: 93%

The field experiments and model of the natural dust deposition effects on photovoltaic module efficiency

Jaszczur

Teneta

Styszko

et al. 2018

Environ Sci Pollut Res

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The maximisation of the efficiency of the photovoltaic system is crucial in order to increase the competitiveness of this technology. Unfortunately, several environmental factors in addition to many alterable and unalterable factors can significantly influence the performance of the PV system. Some of the environmental factors that depend on the site have to do with dust, soiling and pollutants. In this study conducted in the city centre of Kraków, Poland, characterised by high pollution and low wind speed, the focus is on the evaluation of the degradation of efficiency of polycrystalline photovoltaic modules due to natural dust deposition. The experimental results that were obtained demonstrated that deposited dust-related efficiency loss gradually increased with the mass and that it follows the exponential. The maximum dust deposition density observed for rainless exposure periods of 1 week exceeds 300 mg/m 2 and the results in efficiency loss were about 2.1%. It was observed that efficiency loss is not only mass-dependent but that it also depends on the dust properties. The small positive effect of the tiny dust layer which slightly increases in surface roughness on the module performance was also observed. The results that were obtained enable the development of a reliable model for the degradation of the efficiency of the PV module caused by dust deposition. The novelty consists in the model, which is easy to apply and which is dependent on the dust mass, for low and moderate naturally deposited dust concentration (up to 1 and 5 g/m 2 and representative for many geographical regions) and which is applicable to the majority of cases met in an urban and non-urban polluted area can be used to evaluate the dust deposition-related derating factor (efficiency loss), which is very much sought after by the system designers, and tools used for computer modelling and system malfunction detection.

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Degradation of optical properties of solar collectors due to the ambient dust deposition as a function of particle size

Cited by 27 publications

References 1 publication

Assessment of PM dry deposition on solar energy harvesting systems: Measurement–model comparison

Assessment of PM dry deposition on solar energy harvesting systems: Measurement–model comparison

Dominant environmental parameters for dust deposition and resuspension in desert climates

The field experiments and model of the natural dust deposition effects on photovoltaic module efficiency

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