Influence of Dust Accumulation on the Solar Reflectivity of a Linear Fresnel Reflector

The greenhouse effect is exacerbated as greenhouse gas concentrations rise.Capturing and degrading methane in the atmosphere can effectively slow the trend of global temperature rise. The solar chimney power plant integrated with photocatalytic reactor (SCPP-PCR) is a promising concept for both clean electricity generation and large-scale atmospheric methane removal. In this paper, this concept was for the first time quantitatively verified by integrating a photocatalytic reactor in the collector of SCPP to realize the above two targets. A systematic numerical model was proposed to evaluate the performance of degradation of methane and the electricity generation of the SCPP-PCR. The results revealed that the methane purification rate decreased with increasing turbine rotational speed, but the photocatalytic efficiency improved.

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“…Some other innovative studies on SCPP [32][33][34] and accumulation of solar energy 35,36 were also worth noting.…”

Section: Take Down Policymentioning

confidence: 99%

“…The convection of the canopy helped to cool the STPV and increase the power production efficiency of the system owing to the chimney effect. Some other innovative studies on SCPP [32][33][34] and accumulation of solar energy 35,36 were also worth noting.…”

mentioning

confidence: 99%

A novel green technology: Reducing carbon dioxide and eliminating methane from the atmosphere

Ming

Xiong

Shi

et al. 2022

Intl J of Energy Research

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“…Some studies were interested in the relationship between the deposited dust's weight, and the consequent reflectance drop: Zhao et al [64] studied soiling of Fresnel linear reflectors in China. After 48 days, dust density of 2.5 g/m² caused 9.4% loss in average relative reflectivity.…”

Section: Figmentioning

confidence: 99%

“…In addition to natural dust, bird droppings contribute to the soiling of solar mirrors as well and result in serious reflectivity drops [64,65], the losses in the overall performance might even reach 60% [67]. The severity of the losses due to bird droppings makes them comparable to major soiling losses such as localized dust deposition and red rain events [48,49].…”

Section: Figmentioning

confidence: 99%

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Dust impact on concentrated solar power: A review

Zereg

Gama

Aksas³

et al. 2021

Environmental Engineering Research

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Many sites with high solar radiation face high dust loads that reduce energy generation by concentrated solar power plants. This review presents the attenuative impacts of atmospheric aerosols, as well as reflectivity losses due to soiling of solar reflectors, by covering both experimental investigations and numerical studies; along with presenting the theoretical background. The chemical nature of aerosols, and the physics of soiling and atmospheric extinction phenomena (scattering and absorption) are also reviewed. Suspended particles like aerosols result in atmospheric extinction of the solar radiation that reaches the concentrators, and the deposition of these particles on the solar reflectors provokes decreases up to 80% in their reflectivity, and thus enhances the cumulus of optical losses and the reduction of energy production. Even though dust affects both CSP and photovoltaics, CSP technologies suffer more losses. The impact of dust should be particularly considered during the planning phase of solar thermal plants, since its consequent reduction in energy output can be severe. While there have been multiple papers to review dust-related problems for PV, the present paper is the first literature review dedicated to the impact of soiling on concentrated solar power.

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Solar Flux Measuring and Optical Efficiency Forecasting of the Linear Fresnel Reflector Concentrator after Dust Accumulation

et al. 2022

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Influence of Dust Accumulation on the Solar Reflectivity of a Linear Fresnel Reflector

Cited by 13 publications

References 35 publications

A novel green technology: Reducing carbon dioxide and eliminating methane from the atmosphere

A novel green technology: Reducing carbon dioxide and eliminating methane from the atmosphere

Dust impact on concentrated solar power: A review

Solar Flux Measuring and Optical Efficiency Forecasting of the Linear Fresnel Reflector Concentrator after Dust Accumulation

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