Development and experimental validation of a physical model for the soiling of mirrors for CSP industry applications

Parabolic Trough Collector with Internal Fractal Fins in Receiver to Increase Thermal Performance in Working Fluid

“…Convective coefficient ℎ − in [Eq. (8] depends on conductivity coefficient of air ( ), cover diameter ( ) and Nusselt number ( ).…”

“…On solar energy production field, the most developed technologies are photovoltaic and concentrated solar power (CSP), first one offer a decentralized power generation and second one offer energy plants with storage system, both are the most suitable sources for energy production on a high scale [7], [8].Within the advantages of concentrator solar power is producing dispatchable renewable electricity with a balancing intermittent of renewable sources, [9] as is the case of wind power and solar photovoltaic sources which are intermittent , so require an additional storage system. CSP has the option to integrate a thermal storage and at the same time an energy storage when sun hours are available, so later can be used after generation time or even in the night [10].…”

Transparent superhydrophilic and superhydrophobic nanoparticle textured coatings: comparative study of anti-soiling performance

“…However, as reported in the previous work, the small dust particles ($10 mm) were still densely and strongly adsorbed onto the uncoated mirror surfaces as a result of the vdW force, a charge double layer, surface energy, capillary forces, and electrostatic force on the mirror surfaces. 13,14 The particle size distribution on the uncoated surface was broad and centred at 2.03 AE 1.49 mm (n ¼ 375 from 8977 mm 2 of image analysis area). Typically, most soiled dust particles on reective substrates are <40 mm in dry and desert areas.…”

“…[1][2][3][4][5][6][7][8][9] For example, concentrated solar power (CSP) technologies generate power by using mirrors to reect and concentrate a large area of sunlight onto a small area of a receiver. 1,7,[10][11][12][13][14] Maintaining clean mirror surfaces is important because CSP plants, mainly built in arid desert areas, experience severe dust accumulation. In efforts to mitigate soiling and maintain clean surfaces, many studies have explored natural soiling of reective surfaces and environmentally friendly cleaning methods in the eld.…”

“…In efforts to mitigate soiling and maintain clean surfaces, many studies have explored natural soiling of reective surfaces and environmentally friendly cleaning methods in the eld. [1][2][3]5,[8][9][10][11][12][13][14] Recent progress in nanotechnology (e.g., transparent superhydrophobic [SP] coatings 6,[15][16][17][18][19][20][21][22] ) suggests a potential breakthrough in a unique surface self-cleaning technology that could signicantly enhance the reliability and efficiency of solar panel glass and solar mirrors while drastically reducing cleaning and maintenance costs. A reduction in maintenance costs as a result of self-cleaning surfaces could have a signicant impact on energy harvesting.…”