Numerical Calculation of Wind Loads over Solar Collectors

Mier-Torrecilla, M.; Herrera, Emílio; Doblaré, M.

doi:10.1016/j.egypro.2014.03.018

Cited by 29 publications

(16 citation statements)

References 13 publications

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“…They reported stable loads on the collectors from the fifth row and the fourth column from the edge on, which they defined as the interior part of the solar field. Mier-Torrecilla, Herrera, and Doblaré [6] confirmed the reduced load in the interior of the field in a numerical study. The importance of conducting transient simulations to adequately capture the effects of the wind on the collectors was highlighted in their study.…”

Section: Introductionsupporting

confidence: 55%

Wind effects in solar fields with various collector designs

Paetzold

Cochard

Fletcher

et al. 2016

AIP Conference Proceedings

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Abstract. Parabolic trough power plants are often located in areas that are subjected to high wind speeds, as an open terrain without any obstructions is beneficial for the plant performance. The wind impacts both the structural requirements and the performance of the plant. The aerodynamic loads from the wind impose strong requirements on the support structure of the reflectors, and they also impact the tracking accuracy. On a thermal level the airflow around the glass envelope of the receiver tube cools its outer surface through forced convection, thereby contributing to the heat loss.Based on previous studies at the level of an individual row of collectors, this study analyses the wind effects in a full-scale solar field of different continuous and staggered trough designs. The airflow around several rows of parabolic trough collectors (PTC) is simulated at full scale in steady state simulations in an atmospheric boundary layer flow using the commercial computational fluid dynamics software ANSYS R CFX 15.0. The effect of the wake of a collector row on the following collectors is analysed, and the aerodynamic loads are compared between the different geometries.The outermost collectors of a solar field experience the highest wind forces, as the rows in the interior of the solar field are protected from high wind speeds. While the aerodynamic forces in the interior of the solar field are almost independent of the collector shape, the deeper troughs (with large rim angles) tested in this study show a lower heat loss due to forced convection on the outer surface of the receiver tube than the shallower ones (with small rim angles) in most of the solar field.

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Section: Introductionsupporting

confidence: 55%

Wind effects in solar fields with various collector designs

Paetzold

Cochard

Fletcher

et al. 2016

AIP Conference Proceedings

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“…Hachicha et al (2013) estimated mean loads from an LES of a geometrically two-dimensional PTSC with a periodic boundary in the spanwise direction and a steady, uniform approach flow. Time-varying inlet boundary conditions were first used with LES in Mier-Torrecilla et al (2014) to estimate both mean and root-mean-square (RMS) wind loads of a threedimensional model. Through appropriate modelling of the atmospheric boundary layer, the mean loads were shown to be within 10% of experimental reference data.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of wind loads on a parabolic trough solar collector using lattice Boltzmann and finite element methods

Andre

Mier-Torrecilla

Wüchner

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…For an isolated Parabolic Trough collector without torque tube, the drag, lift and momentum coefficients are respectively around 1, 0.5 and 0.6 according to Mier-Torrecilla's study [16] and around 2, 2 and 0.2 according to Hosoya's study [17] for the worse position. Thus, according to the results previously presented, for the same aperture, the drag, lift and torque applied to the mirrors of a LFR module are respectively around 5 to 10 times, 1.2 to 8 times and 50 to 150 times lower than for the Parabolic Trough module.…”

Section: Comparison With Parabolic Troughmentioning

confidence: 99%

Wind Loads on Linear Fresnel Reflectors’ Technology: A Numerical Study

Lancereau¹,

Rabut²,

Itskhokine³

et al. 2015

Energy Procedia

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The wind effect on the Fresnel technology is one of the main design stresses for the metallic structure, primary reflectors, receivers and solar tracking system. Therefore, in order to quantify its impact and compare it to a more mature technology (the Parabolic Trough), a first study of the wind load on a Linear Fresnel Reflector (LFR) collector with an air-stable absorber tube receiver (with protective cover glass) has been undertaken. The drag, lift and momentum coefficients of the receiver and primary reflectors have been calculated using a bi-dimensional CFD model based on the COMSOL Multiphysics® software. The impact of the transversal wind speed has been studied. Moreover, the interaction between the receiver and the primary reflectors has been quantified. Finally, a comparison to Parabolic Trough collectors has been made, which confirms the much lower wind load of LFR technology for an equal mirror aperture area, and thus the much lighter structures required for resisting these wind loads and/or the larger operation range with respect to wind speed.

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Numerical Calculation of Wind Loads over Solar Collectors

Cited by 29 publications

References 13 publications

Wind effects in solar fields with various collector designs

Wind effects in solar fields with various collector designs

Numerical simulation of wind loads on a parabolic trough solar collector using lattice Boltzmann and finite element methods

Wind Loads on Linear Fresnel Reflectors’ Technology: A Numerical Study

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