Electrodynamic removal of dust from solar mirrors and its applications in concentrated solar power (CSP) plants

Mazumder, Malay K.; Horenstein, Mark N.; Stark, Jeremy W.; Hudelson, John N.; Sayyah, Arash; Heiling, Calvin; Yellowhair, Julius E.

doi:10.1109/ias.2014.6978347

Cited by 25 publications

(20 citation statements)

References 8 publications

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“…Some amount of particles still remained on the electrode surface at high frequency such as 1 and 10 kHz because at high frequency, movement of fine particles could not follow the high-speed inversion of Applications of Dielectric Barrier Discharge Microplasma DOI: http://dx.doi.org/10.5772/intechopen.81425 the polarity. The same phenomena was reported by Kawamoto et al [19,20] which carried out fine particle removal and transport and reported that the cleaning efficiency decreased at more than 10 Hz. The threshold value reported in [19,20] was different from these results obtained at 500 Hz due to the different conditions such as electrode configuration, applied voltage, particle diameter, and electrical properties of particles.…”

Section: Particle Removal By Microplasmasupporting

confidence: 84%

“…Because the charged or uncharged lunar dust has a negative influence on the operation of mechanical system, lunar dust simulant was used in the series of experiments. Also, other researchers investigated removal of the fine particles from the surface of solar cells [20,21], the transport of toner particles by traveling wave [51,52] and the decontamination of the silicon wafer [53,54]. Due to its advantages such as low discharge voltage of about 1 kV and scalability of electrode size, microplasma was used for particle removal [55].…”

Section: Particle Removalmentioning

confidence: 99%

“…The removal or transfer of fine particles is important for global environmental problems such as PM 2.5, semiconductor industry dust contamination, [16] or for the exploration activities on the moon [17,18]. Due to the electrostatic and dielectrophoretic forces, particles can be removed from surfaces of solar cells or from components in electronic industry in the case of dust contamination [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Applications of Dielectric Barrier Discharge Microplasma

Shimizu¹,

Krištof²,

Blajan³

2019

Atmospheric Pressure Plasma - From Diagnostics to Applications

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Dielectric barrier discharge microplasma is a nonthermal plasma discharge at atmospheric pressure which due to the micrometer size dielectric layer between the grounded and high-voltage energized electrodes enables to drive the device at less than 1 kV. Microplasma is an economical and ecological alternative for conventional technologies used for NOx removal, indoor air cleaning, surface treatment of polymers, biomedical applications such as transdermal drug delivery, or as an actuator. In this chapter, microplasma applications such as indoor air purification, skin treatment for drug delivery, particle removal, and flow control are presented.

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Section: Particle Removal By Microplasmasupporting

confidence: 84%

Section: Particle Removalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Applications of Dielectric Barrier Discharge Microplasma

Shimizu¹,

Krištof²,

Blajan³

2019

Atmospheric Pressure Plasma - From Diagnostics to Applications

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“…The shading effect of the electrodes which causes a loss of reflectance is a main disadvantage of this method. An optimum design was found in [61] reporting that an electrode width superior to 25-50 µm, with a center-to-center spacing of 700 to 800 µm permits the best cleaning efficiency with minimum reflectance loss [59]. This technology is believed to significantly reduce the need for cleaning.…”

Section: Electrostatic Methodsmentioning

confidence: 99%

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

et al. 2018

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The severe soiling of reflectors deployed in arid and semi arid locations decreases their reflectance and drives down the yield of the concentrating solar power (CSP) plants. To alleviate this issue, various sets of methods are available. The operation and maintenance (O&M) staff should opt for sustainable cleaning methods that are safe and environmentally friendly. To restore high reflectance, the cleaning vehicles of CSP plants must adapt to the constraints of each technology and to the layout of reflectors in the solar field. Water based methods are currently the most commonly used in CSP plants but they are not sustainable due to water scarcity and high soiling rates. The recovery and reuse of washing water can compensate for these methods and make them a more reasonable option for mediterranean and desert environments. Dry methods, on the other hand, are gaining more attraction as they are more suitable for desert regions. Some of these methods rely on ultrasonic wave or vibration for detaching the dust bonding from the reflectors surface, while other methods, known as preventive methods, focus on reducing the soiling by modifying the reflectors surface and incorporating self cleaning features using special coatings. Since the CSP plants operators aim to achieve the highest profit by minimizing the cost of cleaning while maintaining a high reflectance, optimizing the cleaning parameters and strategies is of great interest. This work presents the conventional water-based methods that are currently used in CSP plants in addition to sustainable alternative methods for dust removal and soiling prevention. Also, the cleaning effectiveness, the environmental impacts and the economic aspects of each technology are discussed.

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“…Although significant endeavors , Heliotex} have been pursuit in improving the performance of robotic devices, they are still facing some challenges such as scalibility, minimization of water usage, maintenance and operation costs, to name a few. As an alternative, the concept of automatic dust removal using the electrostatic forces of electrodynamic screen (EDS) technology is in a developmental stage and on its way toward commercialization [11, 12, 13, 14, ironmental} 15,16,17,18,19,20]. The EDS consists of a set of parallel electrodes, either transparent or opaque, deposited on a glass substrate and embedded by a thin transparent dielectric film.…”

Section: Developing}7mentioning

confidence: 99%

Electrostatic force distribution on an electrodynamic screen

Sayyah

Horenstein

Mazumder

et al. 2016

Journal of Electrostatics

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The enormous potential of the solar energy harvesting plants for providing clean energy is severely limited by dust accumulation on their optical surfaces. In lieu of the most commonly-practiced manual cleaning method of using high-pressure water jets, the electrodynamic screen (EDS) technology offers an attractive solution for removing dust particles from optical surfaces using electrostatic forces. In this paper, the impacts of different EDS design parameters in the electric field distribution on an EDS have been studied. Furthermore, based on electric field expressions, closed-form solutions for multipolar dielectrophoretic (DEP) forces in the EDS application are provided. Detailed evaluation of the EDS performance necessitates investigation of different forces involved in dust removal process. We have provided different comparisons between repelling and attracting forces exerted on dust particles in the dust removal process. Comparison results elucidate how EDS performs in removing a given size range of dust particles. The significant detrimental impact of relative humidity in the EDS performance has been quantitatively addressed. It is shown how just 10% increase in relative humidity can make the repelling force ineffective in dust removal process.

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Electrodynamic removal of dust from solar mirrors and its applications in concentrated solar power (CSP) plants

Cited by 25 publications

References 8 publications

Applications of Dielectric Barrier Discharge Microplasma

Applications of Dielectric Barrier Discharge Microplasma

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

Electrostatic force distribution on an electrodynamic screen

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