Specular reflectance of soiled glass mirrors – Study on the impact of incidence angles

Heimsath, Anna; Lindner, P.; Klimm, Elisabeth; Schmid, Tobias; Moreno, Karolina Ordóñez; Elon, Yehonatan; Am-Shallem, Morag; Nitz, Peter

doi:10.1063/1.4949219

Cited by 19 publications

(4 citation statements)

References 5 publications

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“…The impact of dust settlement on CSP systems is identified in the optical characteristics of the concentrators/mirrors used in these technologies. The specular reflectivity of CSP mirrors is the main parameter affected by dust [43]. The severity of dust deposition on CSP depends not only on the local weather conditions but also on the mirror material.…”

Section: Dust Impact On Concentrated Solar Power Systemsmentioning

confidence: 99%

Dust Effect on Solar Energy Systems and Mitigation Methods

Hachicha¹,

Abo-Zahhad²

2023

IJEPM

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Solar energy systems present a potential solution to global challenges in energy production and addressing environmental issues. However, such systems' performance could deteriorate in harsh weather conditions, which may lead to short-and long-term degradation. Particular attention should be paid to dust accumulation affecting both types of solar systems: Photovoltaic (PV) and Concentrated Solar Power systems (CSP). This review discusses the influencing factors affecting dust accumulation and the dust impact on solar systems. The comparison of dust accumulation effect on both technologies is then assessed. The reported dust accumulation studies showed more performance deterioration in CSP systems than in PV systems. In both cases, dust accumulation leads to a drop in optical characteristics resulting in a loss of energy yield. Potential mitigation methods and their advantages and disadvantages are also reviewed. It is concluded and recommended from the review analysis that dust accumulated on solar systems should be considered in the design and operation phases to define appropriate cleaning methods and frequencies.

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Section: Dust Impact On Concentrated Solar Power Systemsmentioning

confidence: 99%

Dust Effect on Solar Energy Systems and Mitigation Methods

Hachicha¹,

Abo-Zahhad²

2023

IJEPM

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“…This enables to better study soiling behavior e.g. with fine particles [65], the transmittance loss and reflection properties of solar glass with dust coverage [66][67][68].…”

Section: Soiling Loadsmentioning

confidence: 99%

Accelerated aging tests vs field performance of PV modules

Weiß

Klimm²,

Kaaya

2022

Prog. Energy

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The market for Photovoltaic systems has experienced an enormous growth worldwide and will further grow over the coming decades. Investments in Photovoltaics became an important financial product with the special feature of very long contract durations. Typically operation of over 20 years is expected, during which generation of electricity and revenues are expected. Due to these long operational times, quality, durability, reliability, and degradation rates become crucial for the investment. PV modules are the dominating components in this regard since they prevail the investment. Accelerated ageing tests are in general used to ensure the quality of photovoltaic components. These tests are partly standardized, for PV mainly by IEC and are used for type approval or safety testing. Accelerated ageing tests are also adapted to specific needs and e g used for Quality Assurance (QA) of manufacturers or Service Life Prediction (SLP) by manufacturers or research institutes. All the efforts are taken to gain knowledge about the behaviour of PV modules in operation and thus the accelerated tests have to be related to normal operation. Since PV is used around the globe, the conditions vary significantly depending on the location of installation. In addition, the installation has severe influence on the operational conditions of PV modules. The papers attempt is to give an overview on the state of the art of accelerated testing and field performance analysis of PV modules with focus on developments over the last five to ten years. Developments are described and the status is analysed regarding the significance of tests including the latest developments and open scientific gaps related to the envisaged correlation of accelerated tests with field performance. The reader is enabled to differenciate between reliability testing and service life prediction. The understanding for a comprehensive approach of reliability testing including field evaluation data is develope

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“…and 45° in aluminium and glass mirrors, 10-16% in 135° mirrors and, 27% (aluminium) and 44% (glass) in 0° mirrors. The influence of angles was also studied by Heimsath et al [77]. They studied, under laboratory conditions, the impact of soiling for different incidence angles on the reflectance measurements of the mirrors.…”

Section: Mirror Soiling and Dust Accumulationmentioning

confidence: 99%

A review of the application performances of concentrated solar power systems

2019

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The global energy production model is changing from fossil fuels to renewable and nuclear energies. Concentrated solar power is one of the growing technologies that is leading this process. This growth implies the sophistication and size of the systems and, therefore, it requires an increase in maintenance tasks to ensure reliability, availability, maintainability and safety. The aim of this paper is to describe the current context of concentrated solar power, to summarise and analyse the main degradation mechanisms and the main techniques to detect, prevent and mitigate these faults. An exhaustive literature study is presented, considering the most advanced techniques and approaches. A novel qualitative and quantitative analysis of the literature is provided. Finally, the current trends and the future challenges in this field are gathered from this study.

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Specular reflectance of soiled glass mirrors – Study on the impact of incidence angles

Cited by 19 publications

References 5 publications

Dust Effect on Solar Energy Systems and Mitigation Methods

Dust Effect on Solar Energy Systems and Mitigation Methods

Accelerated aging tests vs field performance of PV modules

A review of the application performances of concentrated solar power systems

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