Experimental investigation of the passive cooled free-standing photovoltaic panel with fixed aluminum fins on the backside surface

Grubišić‐Čabo, Filip; Nižetić, Sandro; Čoko, Duje; Marinić-Kragić, Ivo; Papadopoulos, Agis M.

doi:10.1016/j.jclepro.2017.12.149

Cited by 135 publications

(39 citation statements)

References 17 publications

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“…The justification of this type of fin placement is found in the results from previous research (mainly Grubišić‐Čabo et al and Nižetić et al). In these papers, it was shown that the positioning of aluminium fins could overcome the flow separation effect.…”

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 86%

“…As shown in Grubišić‐Čabo et al, the installation of aluminium fins on the back side, with the usage of thermally stabile glue, resulted in up to 5% of power yield increase. A similar technique was used on the PV system “System B.” Aluminium fins (2 mm thick) were glued on the back side, in a manner that every fin cools down one individual PV cell from the back surface.…”

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 94%

“…The previous work was based on proving the cooling concept on a loaded 45 W polycrystalline panel. A specific set‐up of aluminium fins was used on back side to cool down the modified PV panel, and referent (also loaded) panel was used for comparison.…”

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

“…Presumably, if more fins were added, additional raise in power yield could be expected. Figure represents the position of the aluminium fins on the 45 W PV panel, which was used for preliminary measurements …”

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

“…In these papers, it was shown that the positioning of aluminium fins could overcome the flow separation effect. However, Grubišić‐Čabo et al and Nižetić et al dealt with smaller PV panels. For that reason, the fins used here are longer.…”

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

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Further progress in the research of fin‐based passive cooling technique for the free‐standing silicon photovoltaic panels

et al. 2019

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Summary The paper deals with a passive air‐based cooling technique of photovoltaic (PV) panels in operating conditions. Cooling technique is done by specific type of using aluminium fins, and its main purpose is to increase the electrical efficiency of the PV panel. An increase in electrical efficiency can be achieved because of temperature degradation effect, where the PV panel yields less power at higher operating temperatures (the PV panel's efficiency can drop by up to 0.5%/°C). To confirm a cooling technique, a medium‐sized PV system was used in a 2‐month experiment. The experiment was done in realistic operating conditions, and all working parameters were thoroughly measured. After the analysis of the data, no significant raise in electrical efficiency was recorded throughout the experiment. A numerical approach was conducted, based on gained experimental data. Developed numerical model gave explanations of experimental results and provided an insight in heat flow through the PV cell. Later on, developed numerical model was used to propose new cooling variations of the fin‐based technique and to further examine the overall potential of air based passive cooling techniques. It was shown that cooling effect by up to 5°C is a realistic expectation for this technique in described operating conditions.

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Section: Description Of Examined Experimental Set‐upmentioning

confidence: 86%

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 94%

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

Section: Description Of Examined Experimental Set‐upmentioning

confidence: 99%

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Further progress in the research of fin‐based passive cooling technique for the free‐standing silicon photovoltaic panels

et al. 2019

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Detection and analysis of soil water content based on experimental reflectance spectrum data

Fan

2020

Asia-Pacific J Chem Eng

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In order to improve the yield of crops, the method of soil water content detection and analysis based on experimental reflectance spectrum data is adopted. From the four aspects of the farmland soil water detection based on reflection spectrum information, soil water content detection in farmland based on spectral absorption characteristics, remote sensing inversion of soil water content of farmland by reflectance spectra data, and soil water content detection in farmland based on near‐infrared spectroscopy, the soil water content of farmland can be analyzed. The absorption valley near 1,920 nm is the characteristic absorption valley of soil water in the black soil, which can be used to predict the water content of the black soil by the spectral characteristic parameters of the absorption valley; soil water will increase the absorption of radiation energy and reduce the overall reflectance spectra of soil. The quantitative monitoring of soil water content can be achieved by using the remote sensing model of soil water content in this paper. In the range of low soil water content, the reflectance decreases with the increase of soil water content in farmland, whereas in the range of high soil water content, it increases with the increase of soil water content in farmland. The correlation between soil water content and normalized spectral reflectance is positive and negative correlation and mainly negative correlation. The method can detect soil water content in farmland under extreme conditions of different texture, soil water, salinity, and organic matter. It is an effective method for soil water content detection.

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Research Progress of Photovoltaic Cooling Systems Based on Phase Change Materials: An Overview

Liu,

Zhang,

Hua

et al. 2024

Energy Tech

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Photovoltaic technology plays a crucial role in harnessing renewable energy. While photovoltaic panels directly convert solar energy into electricity, more than 50% of solar radiation is lost as waste heat, diminishing the overall efficiency of the panels. This study reviews various cooling technologies for photovoltaic systems, focusing on the use of phase change materials for cooling in photovoltaic systems. Phase change materials, known for their high latent heat capacity, are extensively used in thermal energy storage applications. Incorporating phase change materials in photovoltaic systems can increase thermal storage potential by 30–50% compared to conventional systems, leading to a 70% extension in heat storage duration and various levels of enhanced power output. The main purpose of the article is to review the advantages and disadvantages of various technologies, determine the research direction of phase change materials for cooling systems in photovoltaics, and ensure the reliability of this technology.

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Experimental investigation of the passive cooled free-standing photovoltaic panel with fixed aluminum fins on the backside surface

Cited by 135 publications

References 17 publications

Further progress in the research of fin‐based passive cooling technique for the free‐standing silicon photovoltaic panels

Further progress in the research of fin‐based passive cooling technique for the free‐standing silicon photovoltaic panels

Detection and analysis of soil water content based on experimental reflectance spectrum data

Research Progress of Photovoltaic Cooling Systems Based on Phase Change Materials: An Overview

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