High-resolution estimates of diffuse fraction based on dynamic definitions of sky conditions

Hassan, Muhammed A.; Akoush, Bassem M.; Abubakr, Mohamed; Campana, Pietro Elia; Khalil, A.

doi:10.1016/j.renene.2021.01.066

Cited by 23 publications

(4 citation statements)

References 63 publications

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“…Any likely sources of operation-related problems and equipment errors and uncertainties can result in the appearance of questionable values. , Therefore, a hybrid quality control procedure for minute time resolution irradiation is implemented to ensure that the data used in this study are reliable. First of all, records with solar altitude angles below 5° were excluded to avoid the errors originating from the cosine response . Moreover, other restrictions were considered to examine whether the recorded solar irradiation data were within the physical limits.…”

Section: Materials and Methodsmentioning

confidence: 72%

“…The intense transient effects of cloud enhancement can increase the ground horizontal solar irradiance for a 1 min time resolution. 33 , 34 As reported by Gueymard and Ruiz-Arias, 35 the 1 min I g could occasionally be 50% larger than the extraterrestrial horizontal irradiance ( I 0 ), with the maximum clearness index ( K t ) between 1.0 and 1.5. Consequently, the limit of 0–1.5 for K t was considered in the quality control procedure.…”

Section: Materials and Methodsmentioning

confidence: 72%

“…First of all, records with solar altitude angles below 5° were excluded to avoid the errors originating from the cosine response. 33 Moreover, other restrictions were considered to examine whether the recorded solar irradiation data were within the physical limits. The intense transient effects of cloud enhancement can increase the ground horizontal solar irradiance for a 1 min time resolution.…”

Section: Materials and Methodsmentioning

confidence: 99%

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Quantification of the Impact of Fine Particulate Matter on Solar Energy Resources and Energy Performance of Different Photovoltaic Technologies

2022

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Ambient fine particulate matter (PM2.5) could be a potential environmental risk for decreasing the available solar energy resources and solar photovoltaic (PV) power generation. This study quantifies the attenuation effects of PM2.5 on surface solar irradiance and system performance of different solar PV technologies in Hong Kong. The analysis based on observational irradiation data shows that the global horizontal irradiance decreased by more than 5% in most months under the conditions of PM2.5 concentration exceeding 33.5 μg/m 3 . During the experiment, the average PM2.5-related losses in the energy output of crystalline silicon and thin-film PV systems could be up to 7.00 and 9.73%, respectively. The measured energy outputs of the experimental PV modules suggest that PM2.5 affects the energy performance of thin-film solar cells with a larger band gap more significantly than that of crystalline silicon PV modules. Moreover, an increasing trend in the performance ratio of monocrystalline silicon, polycrystalline silicon, and copper indium gallium selenide PV systems with the increase of PM2.5 concentration is observed. In contrast, the amorphous silicon and cadmium telluride PV systems with a narrower spectral response range show a decreasing trend in the performance ratio over the experiment. Results indicate that the losses in the available solar energy resources and PV energy potential are expected to increase in areas where heavier PM2.5 pollution exists.

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Section: Materials and Methodsmentioning

confidence: 72%

Section: Materials and Methodsmentioning

confidence: 72%

Section: Materials and Methodsmentioning

confidence: 99%

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Quantification of the Impact of Fine Particulate Matter on Solar Energy Resources and Energy Performance of Different Photovoltaic Technologies

2022

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“…To estimate the E gt , the amount of direct normal irradiance (E bn ) and diffuse horizontal irradiance (E dh ) must be known. However, ground measurements of E bn and E dh are uncommon, and these quantities are usually estimated from global horizontal irradiance (E gh ) using empirical decomposition models (Hassan et al, 2021). Although the scientific community has improved and developed new decomposition models since they were first introduced in 1961, they continue to be strongly influenced by the selected location, as they are empirical models based on site-specific data (Gueymard and Ruiz-Arias, 2016;Li et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Horizontal-to-tilt irradiance conversion for high-latitude regions: a review and meta-analysis

Manni,

Thorning,

Jouttijärvi

et al. 2023

Front. Built Environ.

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This review focuses on the solar irradiance model chain for horizontal-to-tilted irradiance conversion at high latitudes. The main goals of the work are 1) to assess the extent to which the literature accounts for decomposition and transposition models specifically developed for high-latitude application; 2) to evaluate existing validation studies for these particular conditions; 3) to identify research gaps in the optimal solar irradiance model chain for high-latitude application (i.e., latitude ≥60°). In total, 112 publications are reviewed according to their publication year, country, climate, method, and keywords: 78 publications deal with decomposition models and 34 deal with transposition models. Only a few models (6) have been parameterized using data from Nordic countries. Here, we compare 57 decomposition models in terms of their performance in Nordic climate zones and analyze the geographical distribution of the data used to parametrize these models. By comparing the Normalized Root Mean Square Deviation coefficients for direct normal irradiation, the decomposition models Skartveit1 and Mondol1 are most effective on one-hour scale and Yang4 on one-minute scale. Recent studies on the empirical transposition models estimating the global tilted irradiation on vertical surfaces show the best performance for Perez4 and Muneer models. In addition, innovative methods such as artificial neural networks have been identified to further enhance the model chain. This review reveals that a validated model chain for estimating global tilted irradiation at high latitudes is missing from the literature. Moreover, there is a need for a universal validation protocol to ease the comparison of different studies.

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Global scale solar energy harnessing: An advanced intra-hourly diffuse solar irradiance predicting framework for solar energy projects

El-kenawy,

Bailek,

Bouchouicha

et al. 2024

Neural Comput & Applic

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High-resolution estimates of diffuse fraction based on dynamic definitions of sky conditions

Cited by 23 publications

References 63 publications

Quantification of the Impact of Fine Particulate Matter on Solar Energy Resources and Energy Performance of Different Photovoltaic Technologies

Quantification of the Impact of Fine Particulate Matter on Solar Energy Resources and Energy Performance of Different Photovoltaic Technologies

Horizontal-to-tilt irradiance conversion for high-latitude regions: a review and meta-analysis

Global scale solar energy harnessing: An advanced intra-hourly diffuse solar irradiance predicting framework for solar energy projects

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