Field measurements reveal insights into the impact of turbulent wind on loads experienced by parabolic trough solar collectors
arxiv(2024)
Abstract
Insights into dynamic wind loading on parabolic trough solar collectors are
presented in this study. The novel conclusions derived in this study were
generated by analyzing a first-of-a-kind measurement campaign of wind and
structural loads performed at an operational power plant. Previous research
primarily relied on wind tunnel tests and simulations, leaving uncertainty
about wind loading effects in operational settings. We demonstrate that the
parabolic trough field significantly alters the turbulent wind field within the
plant, especially under winds perpendicular to the trough rows. Our
measurements within the trough field demonstrate reduced wind speeds, altered
wind directions, breakup of larger eddies into smaller ones, and vortex
shedding from the trough assemblies. These modifications to the wind field
directly impact both static and dynamic support structure loads, with our
measurements revealing higher loads on trough assemblies compared to those
observed in wind tunnel tests. The insights gleaned from this study offer a
fresh perspective on our understanding of wind-driven loads on solar
collectors. By informing the development of next-generation design tools and
models, this research paves the way for enhanced structural integrity and
improved optical performance in future parabolic trough systems.
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