Seasonal variations in the operating temperature of silicon solar panels in southern Ghana

Koffi, Hubert Azoda; Kakane, V.C.K.; Kuditcher, A.; Hughes, Allison; Adeleye, M.B.; Amuzu, J. K. A.

doi:10.1080/20421338.2015.1038006

Cited by 13 publications

(7 citation statements)

References 7 publications

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“…Emetere et al [1] examined, through experimental tests, the effects of solar radiation irregularities due to climate change on the electrical performance of photovoltaic modules. Koffi et al [2] experimentally investigated the seasonal variation of the operating temperature of silicon solar modules under tropical atmospheric conditions, including high turbidity (Harmattan dust particles). Their results confirmed that monocrystalline modules have lower temperature coefficient than polycrystalline and amorphous solar modules.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of a Silicon Photovoltaic Module under the Influence of a Magnetic Field

Combari

Ramde

Sourabié

et al. 2018

Advances in Condensed Matter Physics

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Aside from the terrestrial magnetic field that is generated from the earth core, power transmission, and distribution lines, transformers and other equipment do produce a certain amount of magnetic field that could interfere with the performance of photovoltaic modules. This study conducted an experiment and investigated the performance of a silicon photovoltaic module subjected to a magnetic field. The current-voltage and power-voltage characteristics were plotted in the same axis system and allowed us to find, as a function of the magnetic field, the electrical parameters of the photovoltaic module such as maximum electric power, fill factor, conversion efficiency, and charge resistance at the maximum power point. These electrical parameters were then used to calculate the series and shunt resistances of the equivalent circuit of the photovoltaic module. The results have shown that the efficiency of a solar module is affected by the presence of magnetic fields. However, the magnitude of ambient magnetic field generated by power transmissions lines and other equipment is extremely low (in the order of 10−2 mT or less) as compared to the values of the magnetic field used in this study. That made it difficult to conclude as to the impact of such field on solar photovoltaic installations.

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Section: Introductionmentioning

confidence: 99%

Performance Investigation of a Silicon Photovoltaic Module under the Influence of a Magnetic Field

Combari

Ramde

Sourabié

et al. 2018

Advances in Condensed Matter Physics

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“…Regarding the weather conditions, the period is between 6:00 a.m. and 6:00 p.m. On these days, the variation of the solar radiation on the tilted surface of the modules [W/m 2 ] and the ambient temperature [ • C] varied, with the highest levels for both parameters happening at noon (see Figure 3 While high levels of solar radiations are beneficial for electric power production by the PV modules, these environmental conditions increase the operating temperature of the PV modules. The temperatures vary throughout the day, with the highest temperatures occurring between 11:00 a.m. and 2:00 p.m., reaching levels over 60 • C-a value found in the international literature [12,20,37,75,76] and involves the worsening of the degradation of the solar cells causing significant energy yield losses (kWh) [77]-in some periods (see Figure 4). The three modules-PV1, PV2, and PV4-present a small difference in temperature, once the temperature lines do not overlap.…”

Section: Pre-operation Of the Odtu Water-filmmentioning

confidence: 94%

A Long-Term Analysis of the Architecture and Operation of Water Film Cooling System for Commercial PV Modules

et al. 2021

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This work aims at analyzing and architecting natural and artificial parameters to model a water-film cooling system for photovoltaic modules for some months under warm conditions. Methodologically, the theoretical and technical aspects were structured to develop, implement, monitor, and assess the cooling system at an on-grid, outdoor testing unit, considering the following: (i) the criteria to select and to approve the implementation site (infrastructure and climatologic and solarimetric conditions); (ii) the types, frequency and qualities of the monitored data; (iii) the system measurement, monitoring and control equipment; (iv) the commissioning of the system as a whole; and (v) the tests and results empirically obtained. The water-film cooling system reduces the temperature by 15–19%, on average, and up to a maximum of 24–35%. In terms of electric power, there was an average gain of 5–9% at the time of day with the highest solar radiation, and maximum gains of 12% on days with solar radiation above average. Regarding gross energy, average gains of 2.3–6%, and maximum gains of 6.3–12%, were obtained. It was concluded that the test unit helps understand the natural phenomena and the development, operation, and maintenance of performance gain systems of on-grid PV modules for construction on a commercial scale.

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“…Other authors of that era reported on technology uptake, government projects, and policy, as well as the role of PV in national electrification . More recently, authors such as Koffi et al, Quansah et al, and Mensah et al have presented findings on empirical assessment of solar PV systems in Ghana, covering topics such as temperature response of various silicon and nonsilicon PV technologies, as well as performance metrics of kW‐ to MW‐scale grid‐connected systems.…”

Section: Introductionmentioning

confidence: 99%

Degradation and longevity of solar photovoltaic modules—An analysis of recent field studies in Ghana

Quansah

Adaramola²,

Takyi

2020

Energy Science & Engineering

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Solar photovoltaic (PV) technology has attracted an enormous amount of attention and investment in recent years—translating to record deployment levels. This is due to in part to its potential role as a cleaner energy source in the emissions‐constrained development agenda that is currently being pursued at both global and national levels. Solar PV has also been propelled to the forefront of today's menu of technological options by virtue of its attributes such as scalability, fast deployment lead times, and low operating cost. Substantial investments are needed in the coming years in order to accomplish climate targets and other goals set by various countries and regional/subregional blocs. In support of informed investment decision‐making and ultimately, improved outcomes of solar PV projects, there has been an uptick in studies on operational performance of fielded PV systems across the globe. These studies are, however, geographically unbalanced, and there is the need for data from underrepresented regions. This paper presents a synthesis of results obtained from recent seminal field studies on PV module performance degradation in Ghana. The studies altogether analyzed sixty‐five (65) modules (mono‐ and polycrystalline silicon) from twenty‐nine (29) installations across the country (1118 module‐years). The field‐aged modules were characterized in situ using current‐voltage (I‐V) curves, visual inspection checklists, and thermal imaging. Annual module performance degradation rates (peak power) of 0.8%‐7%, 0.55%‐2.07%, and 1.1%‐2.4% were found for modules located in various climate subcategorizations.

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Seasonal variations in the operating temperature of silicon solar panels in southern Ghana

Cited by 13 publications

References 7 publications

Performance Investigation of a Silicon Photovoltaic Module under the Influence of a Magnetic Field

Performance Investigation of a Silicon Photovoltaic Module under the Influence of a Magnetic Field

A Long-Term Analysis of the Architecture and Operation of Water Film Cooling System for Commercial PV Modules

Degradation and longevity of solar photovoltaic modules—An analysis of recent field studies in Ghana

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