Wind Loads of Solar Water Heaters: Wind Incidence Effect

Chou, Chin-Cheng; Chung, Kung Ming; Chang, Keh-Chin

doi:10.1155/2014/835091

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…A flow expansion in the second half of the panel is also observed, particularly for β = 45°. This agrees with the results of Chou et al [12]. Suction near the front edge is mitigated for α = 30°, and there is a flatter Cp distribution.…”

Section: Longitudinal Pressure Distributionssupporting

confidence: 92%

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Wind Loads on a Solar Panel at High Tilt Angles

2019

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A solar photovoltaic system consists of tilted panels and is prone to extreme wind loads during hurricanes or typhoons. To ensure the proper functioning of the system, it is important to determine its aerodynamic characteristics. Offshore photovoltaic (PV) systems have been developed in recent years. Wind loads are associated with wind, wave climates, and tidal regimes. In this study, the orientation of a single panel is adjusted to different angles of tilt (10°–80°) and angles of incidence for wind (0°–180°) that are pertinent to offshore PV panels. The critical wind loads on a tilted panel are observed at lower angles of incidence for the wind, when the angle of tilt for the panel is greater than 30°.

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Section: Longitudinal Pressure Distributionssupporting

confidence: 92%

“…Aly [11] also showed that discrepancies in the available wind tunnel data may be due to the characteristics of the inflow turbulence. Chou et al [12] studied the effect of wind direction, β. When β = 15 • -60 • , there is greater suction on the upper surface near the windward corner.…”

Section: Introductionmentioning

confidence: 99%

Wind Loads on a Solar Panel at High Tilt Angles

2019

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“…Cao et al [14] noted that wind-induced loads on an inclined panel are due primarily to pressure equalization at large angles of tilt and turbulence at small angles of tilt. The effect of the angle of incidence of wind, β, was investigated by Chou et al [15]. There is greater suction on the upper surface near the windward corner for β = 15 • -60 • .…”

Section: Introductionmentioning

confidence: 99%

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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“…Chung et al [3] conducted experimental study of a scaled commercial system to investigate the mean surface pressure distributions and uplift forces at different wind speeds resulting in the following: the wind uplift is effectively reduced with a guide plate placed normal to wind direction. Chou et al [4] investigated experimentally the effect of a crosswind on the aerodynamic characteristics of two different solar water heaters setups. The first one is a typical residential solar water heater and the second one is an inclined flat plate without the horizontal cylinder.…”

Section: Introductionmentioning

confidence: 99%

Wind Load Reduction in Hollow Panel Arrayed Set

Markousi

Fytanidis

Soulis

2016

Modelling and Simulation in Engineering

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Reducing the wind loading of photovoltaic structures is crucial for their structural stability. In this study, two solar panel arrayed sets were numerically tested for load reduction purposes. All panel surface areas of the arrayed set are exposed to the wind similarly. The first set was comprised of conventional panels. The second one was fitted with square holes located right at the gravity center of each panel. Wind flow analysis on standalone arrayed set of panels at fixed inclination was carried out to calculate the wind loads at various flow velocities and directions. The panels which included holes reduced the velocity in the downwind flow region and extended the low velocity flow region when compared to the nonhole panels. The loading reduction, in the arrayed set of panels with holes ranged from 0.8% to 12.53%. The maximum load reduction occurred at 6.0 m/s upwind velocity and 120.0° approach angle. At 30.00 approach angle, wind load increased but marginally. Current research work findings suggest that the panel holes greatly affect the flow pattern and subsequently the wind load reduction. The computational analysis indicates that it is possible to considerably reduce the wind loading using panels with holes.

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Wind Loads of Solar Water Heaters: Wind Incidence Effect

Cited by 7 publications

References 12 publications

Wind Loads on a Solar Panel at High Tilt Angles

Wind Loads on a Solar Panel at High Tilt Angles

Wind Loads on a PV Array

Wind Load Reduction in Hollow Panel Arrayed Set

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