Two-dimensional unsteady state performance analysis of a hybrid photovoltaic-thermoelectric generator

Motiei, P.; Yaghoubi, M.; GoshtashbiRad, E.; Vadiee, Amir

doi:10.1016/j.renene.2017.11.092

Cited by 67 publications

(25 citation statements)

References 43 publications

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“…The geometry model is shown in Figure 1. Considering the rotationally symmetric deformation of this structure [30][31][32], the dynamic pressure on the boundary of the fluid affects the structure simultaneously. The governing equations include both the structure dynamics equation as Equation (1) [33,34] and the fluid dynamic equation as Equation (2) [35][36][37], namely:…”

Section: Governing Equationsmentioning

confidence: 99%

Vibration-Induced Pressures on a Cylindrical Structure Surface in Compressible Fluid

2019

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This paper unprecedentedly addresses the effect of vibrations of a cylindrical structure on dynamic pressures in a compressible and incompressible fluid situation. To obtain analytical solutions, the density of the fluid is simplified as a constant, but the rates of the density with respect to time and to space are considered as a dynamic and time-dependent function. In addition, the low velocity of the vibration is taken into account so the lower order terms are negligible. According to the assumption that the vibration at the boundary of the structure behaves as a harmonic function, some interesting and new analytical solutions can be established. Both analytical solutions in the cases of the compressible and incompressible fluid are rigorously verified by the calibrated numerical simulations. New findings reveal that, in the case of the incompressible fluid, dynamic pressure at the surface of the cylindrical shell is proportional to the acceleration of the vibration, which acts like an added mass. In the case of the compressible fluid, the pressure at the surface of the cylindrical structure is proportional to the velocity of the vibration, which acts as a damping. In addition, the proportional ratio is derived as ρ c .

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Section: Governing Equationsmentioning

confidence: 99%

Vibration-Induced Pressures on a Cylindrical Structure Surface in Compressible Fluid

2019

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“…9,10,11 Other researchers proposed to combine the thermoelectric generator (TEG) and the PV module in one system to increase electrical energy. 12,13,14 The TEG module acts as a second power generator to boost the overall electrical power generation of the PV/TEG system. However, in a conventional PV/TEG hybrid system, the TEG generator may generate small power due to its poor energy conversion efficiency under low temperature gradient.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, the researchers proposed the use of CPV/T as a hybrid system under different configurations like conventional solar collector “thermally coupled design,” 6 a solar collector with an optical filter, “the volumetric‐absorber design” 7,8 or thermally coupled design and the volumetric‐absorbed design in one combined system 9,10,11 . Other researchers proposed to combine the thermoelectric generator (TEG) and the PV module in one system to increase electrical energy 12,13,14 . The TEG module acts as a second power generator to boost the overall electrical power generation of the PV/TEG system.…”

Section: Introductionmentioning

confidence: 99%

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

et al. 2021

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Nanofluid can be used in a CPV/T solar collector to boost electrical and thermal performances as this technology has drawn great attention from researchers over the last decades. In a CPV/T system, the amount of collected heat could be significantly higher than the amount of electrical power. Combining thermoelectric generator (TEG) and nanofluid-based CPV/T system may result in better electrical performance than CPV/T system alone. In the present work, a nanofluid-based CPV/T-TEG hybrid system with a cooling channel was designed and tested, and the obtained performance was compared with conventional cooling methods [ie, natural cooling (CPV/TEG) and water cooling (WCPV/T-TEG) methods]. At the optimum value of solar concentration, C = 14.6, the electrical performance of the nanofluid-based concentrated photovoltaic/thermal-thermoelectric generator (NCPV/T-TEG) configuration was found to be 89% higher than the standard PV modules. For the same

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“…Some heat loss which has a negative impact on the TE efficiency could be reduced by an evacuated tube 17 . By developing a two‐dimensional unsteady model, it could obtain the dynamic characteristics of the PVTE 18 . The PVTE performance could be improved a solar cavity could enhance the solar absorption 19 .…”

Section: Introductionmentioning

confidence: 99%

“…17 By developing a twodimensional unsteady model, it could obtain the dynamic characteristics of the PVTE. 18 The PVTE performance could be improved a solar cavity could enhance the solar absorption. 19 The flat plate heat pipe was introduced to increase the PVTE efficiency.…”

Section: Introductionmentioning

confidence: 99%

The influence of the bandgap on the photovoltaic‐thermoelectric hybrid system

Zhang

Yan

et al. 2020

Int J Energy Res

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Summary The photovoltaic‐thermoelectric hybrid system (PVTE) is less sensitive to the photon wavelength than the pure PV system. This phenomenon can make the PVTE to be a good method of obtaining electrical energy from solar energy. A challenge of this system is how to distribute the energy in the working process. To solve this problem, this paper establishes a thermodynamic model to study the energy matching mechanism of the hybrid system. The influence of dynamic solar radiation has been considered in the model. The result indicates that the relationship between the PVTE efficiency and the PV bandgap looks like a “reverse U" (rises first and falls later). The impacts of the optical concentration ratio and the TE parameters on the optimal PV bandgap are studied. No matter how these two parameters change, the optimal PV bandgap of the PVTE is around 1.15 eV. It illustrates that the energy match does not depend on the solar radiation and the TE parameters. The effect of the phase change material has also been considered. The melting temperature, mass and heat capacity of the phase change material have been considered in the numerical model. The melting temperature is proved to be important for determining whether it needs to use the phase change material and how much heat should be stored.

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Two-dimensional unsteady state performance analysis of a hybrid photovoltaic-thermoelectric generator

Cited by 67 publications

References 43 publications

Vibration-Induced Pressures on a Cylindrical Structure Surface in Compressible Fluid

Vibration-Induced Pressures on a Cylindrical Structure Surface in Compressible Fluid

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

The influence of the bandgap on the photovoltaic‐thermoelectric hybrid system

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