Wind Loads on a Solar Panel at High Tilt Angles

Chou, Chin Cheng; Chung, Ping-Han; Yang, Ray Yeng

doi:10.3390/app9081594

Cited by 24 publications

(11 citation statements)

References 25 publications

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“…For  = 75°105°, the value of α had a less significant effect. This agrees with the results of Chou et al [21]. The value of CL for   120° decreased as  (= 40°80°) increased, and the opposite was true for  =10°30°.…”

Section: The Lift Coefficientsupporting

confidence: 92%

“…The lowest value for C L was observed for α = 30 • and β = 45 • . This is similar to the results of Chou et al [21] for an inclined panel, for which L/W = 2. The value of C L was relatively small for β = 90 • , and it was positive for β ≥ 105 • , which represents a downward force.…”

Section: The Lift Coefficientsupporting

confidence: 92%

“…On the upper and lower surfaces, there was an inverted U-shape for α = 20 • , 40 • , and 60 • , which corresponds to side-edge vortices. This agrees with the results for an inclined panel for which L/W = 2 [21]. Therefore, the side panels (P1 and P9) experienced greater suction on the upper surface and less lift force on the lower surface.…”

Section: Spanwise Pressure Distributionssupporting

confidence: 89%

“…For an inclined panel, for which L/W = 2, the value of C L for β ≤ 75 • decreased linearly with α (≤30 • ), following an increase for α = 50 • . At high values of α (= 60 • -80 • ), C L remained approximately constant for α = 30 • and 40 • [21]. For β of 0 • , 30 • , 45 • , and 60 • , for which L/W = 0.19, the variation of C L with α was U-shaped.…”

Section: The Lift Coefficientmentioning

confidence: 89%

“…The variation in C pl ranged from 4.6% (α = 20 • ) to 10.9% (α = 60 • ). For an inclined panel with L/W = 2, Chou et al [21] showed that there is a significant change in the value of C pl for α ≤ 30 • . This is due to the formation of intense side-edge vortices.…”

Section: Longitudinal Pressure Distributionsmentioning

confidence: 99%

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Wind Loads on a PV Array

et al. 2019

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This study experimentally determines the wind loads on a stand-alone solar array (length-to-width ratio of 0.19; 1/10-scale commercial modules). The freestream velocity in a uniform flow is 14.5 ± 0.1 m/s, and the turbulence intensity is 0.3%. The angle of tilt ranges from 10° to 80° and the wind is incident at angle of 0°–180°. Mean surface pressure measurements on the upper and the lower surface of the inclined solar panels are used to calculate the lift coefficient. For the angle of incidence of 0°–60° for the wind, the variation in the lift coefficient with the angle of tilt is U-shaped. The formation of a strong windward corner vortex results in greater lift force on the right half of the inclined plate for the angle of incidence of 30°–45° for the wind.

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Section: The Lift Coefficientsupporting

confidence: 92%

Section: The Lift Coefficientsupporting

confidence: 92%

Section: Spanwise Pressure Distributionssupporting

confidence: 89%

Section: The Lift Coefficientmentioning

confidence: 89%

Section: Longitudinal Pressure Distributionsmentioning

confidence: 99%

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Wind Loads on a PV Array

et al. 2019

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PVSails: Harnessing Innovation With Vertical Bifacial PV Modules in Floating Photovoltaic Systems

Tina,

Osama,

Cazzaniga

et al. 2024

Progress in Photovoltaics

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In the context of offshore floating photovoltaic systems (FPVs), this paper explores the use of bifacial photovoltaic modules installed in the vertical position. The energy harvested from the rear face of vertically configured bifacial PV modules compensates for the reduced production at the front face of the module, and this demonstrates the potential of bifacial technology for offshore applications. By comparison, most existing horizontally tilted bifacial FPV systems gain only a small benefit in production from the rear face of the module due to the minimum radiation received, and what also must be taken into consideration is the negative effect of significant soiling owing to the low tilt angle of the PV modules. Hence, to overcome these drawbacks, we have developed the innovative “PVSail” concept, which explores the deployment of vertical FPV systems on floats, buoys, or poles/minipiles. Floating vertical bifacial PV systems (VBPVs) have huge potential to harness all the energy generation capabilities enhance by reflected light, especially from snow‐covered surfaces in northern regions. Our analysis considers a patented mooring and vertical PV system that allows the VBPV structure to align with the prevailing wind direction to shed wind loads, and our numerical analysis explores the potential of VBPV applied to Catania in Italy and Nigg Bay in the United Kingdom. Our analysis study has revealed that across an azimuth angle range (0°–180°), vertical bifacial modules experience roughly a 9% decrease in energy yield at Catania and about a 5% energy yield gain in higher latitude regions like Nigg Bay. Additionally, increasing the latitude of the installation location of VBPV reduces the energy yield sensitivity to the orientation, that is, azimuth angle. The PVSail concept opens the door to novel deployment possibilities in offshore renewable energy projects.

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