Novel design and thermodynamic analysis of a solar concentration PV and thermal combined system based on compact linear Fresnel reflector

Wang, Gang; Wang, Fasi; Shen, Fan; Chen, Zeshao; Peng, Hu

doi:10.1016/j.energy.2019.05.082

Cited by 38 publications

(8 citation statements)

References 58 publications

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“…Multi-junction solar cells are also chosen for high concentration ratios due to their good performance at high operating temperatures. The results showed that high sun radiation and the volume flow rate of the cooling fluid have a significant influence on PVT performance, according to the research [ 43 , 117 , 118 , 119 ].…”

Section: The Reviewmentioning

confidence: 99%

Review of Recent Efforts in Cooling Photovoltaic Panels (PVs) for Enhanced Performance and Better Impact on the Environment

et al. 2022

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The global need for energy has grown in tandem with mankind’s development and spread. This has resulted in an increase in the use of fossil energy sources, a decline in these sources and an increase in pollution, necessitating the search for renewable energy sources. One of the important ways to reduce pollution resulting from the increasing consumption of fossil energy is to enhance the sources of solar energy, of which photovoltaic cells (PV) are one of its most important tools. Therefore, it was necessary to pay attention to improving its efficiency for it to become a promising source of clean energy. PVs turn solar energy into electricity; however, the amount of electricity generated decreases as the temperature of the cells rises in response to the sun’s heat. Cooling of the optical surfaces is one of the most important elements to consider while running solar PV systems to obtain maximum efficiency. The electrical efficiency of PVs is enhanced when suitable cooling technology is used, and the rate of cell breakdown is reduced over time, extending the life of the PV panels. There are many materials used to remove unwanted heat in PV cells, and in recent years, the focus has been on integrating nanomaterials in specific proportions with traditional cooling materials such as water to improve their thermal properties. As a bio-material that is environmentally friendly, renewable, sustainable, inexpensive and has high mechanical properties, cellulose nanocrystals (CNCs) are one of the most promising materials for improving the properties of cooling materials for cooling PV cells and improving their performance.

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Section: The Reviewmentioning

confidence: 99%

Review of Recent Efforts in Cooling Photovoltaic Panels (PVs) for Enhanced Performance and Better Impact on the Environment

et al. 2022

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“…Os concentradores de reflexão linear de Fresnel (RLF) podem ser utilizados em sistemas geradores de eletricidade, utilizando uma série de concentradores solares planos, revestidos com material reflexivo para, assim, expandir a densidade da radiação captada de maneira uniforme e direcionála para os coletores ou absorvedores de calor (Wang et al, 2019).…”

Section: Concentrador Linear Fresnelunclassified

“…As elevadas temperaturas que resultam da concentração solar nos sistemas RLF são captadas por um tubo linear, com um fluido de transferência de calor em seu interior (Figura 4), de forma semelhante ao concentrador cilindro-parabólico (Souza et al, 2021;Wang et al, 2019). Contudo, deve-se realizar melhores estudos, considerando as especificações geométricas para aperfeiçoar as dimensões do sistema em conformidade com os requisitos de concentração solar, com a adequação do terreno e com a variação climática anual para, dessa forma, se obter um melhor aproveitamento de seu potencial, (Gea et al, 2010).…”

Section: Concentrador Linear Fresnelunclassified

Estudo da viabilidade para instalação eletrogeradores termossolares no município de Garanhuns, Pernambuco

Silva

Vigoderis

2022

Jour. Hypers. Rem. Sensg.

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The growing demand for clean and renewable energy sources has increased the frequency of research for the development of new applications aimed at already known energy sources, such as biomass, biogas and wind energy. In the case of solar energy, there is a greater and more consolidated use of photovoltaic panels, which need more improved technologies. However, this same source of energy can be used in other ways, such as through thermoelectric plants, which use the thermal energy from irradiation in a concentrated manner and, therefore, generate vapors that activate the electrical generators. In this way, these plants can be implemented in different regions of the Earth that present an abundant level of insolation and that, therefore, can increase more potential in the electrical transmission network. Although promising, thermosolar energy production may not be feasible everywhere or everywhere. Better studies must be carried out to identify the technical and economic feasibility for the implantation of thermosolar plants. In this context, the municipality of Garanhuns has a lot of geomorphological irregularity, with altitudes ranging from 540 to 1,010 meters, which disadvantages and disfavors the direct incidence of solar radiation, due to the slopes, which affect the radiation angle, or to the shading, which reduces the daily heat stroke. Thus, these factors cause the direct solar irradiation in the Garanhuns region to present at most 4.0 kWh/m²/d, far from the ideal value, around 5.5 kWh/m²/d. With that, the installation of thermosolar plants in Garanhuns would only be viable with investments in earthworks, what makes projects more expensive.

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“…It is considered as one of the most potential energy resources for sustainable energy development in the future. Due to the good development potential of solar energy, many studies on solar energy utilization were carried out in recent years [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of Photo-Thermal Interaction Process between Solar Radiation Energy and Solar Receiver

Wang

Chen

2021

J. Therm. Sci.

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A unified theory of non-equilibrium radiation thermodynamics is always in search as it is meaningful for solar energy utilization. An exergy analysis of photo-thermal interaction process between the solar radiation energy and solar receiver is conducted in this paper. The non-equilibrium radiation thermodynamic system is described. The thermodynamic process of photo-thermal interaction between the solar radiation and solar receiver is introduced. Energy, exergy and entropy equations for the photo-thermal process are provided. Formulas for calculating the optimum receiving temperatures of the solar receiver under both non-concentration and solar concentration conditions are presented. A simple solar receiver is chosen as the calculation example to launch the exergy analysis under non-concentration condition. Furthermore, the effect analysis of solar concentration on the thermodynamic performance of the solar receiver for solar thermal utilization is carried out. The analysis results demonstrate that both the output exergy flux and efficiency of the solar receiver can be improved by increasing the solar concentration ratio during the solar thermal utilization process. The formulas and results provided in this paper may be used as a theoretical reference for the further studies of non-equilibrium radiation thermodynamic theory and solar thermal utilization.

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Novel design and thermodynamic analysis of a solar concentration PV and thermal combined system based on compact linear Fresnel reflector

Cited by 38 publications

References 58 publications

Review of Recent Efforts in Cooling Photovoltaic Panels (PVs) for Enhanced Performance and Better Impact on the Environment

Review of Recent Efforts in Cooling Photovoltaic Panels (PVs) for Enhanced Performance and Better Impact on the Environment

Estudo da viabilidade para instalação eletrogeradores termossolares no município de Garanhuns, Pernambuco

Exergy Analysis of Photo-Thermal Interaction Process between Solar Radiation Energy and Solar Receiver

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