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Sandia capabilities for the measurement, characterization, and analysis of heliostats for CSP

Andraka, Charles E.; Ghanbari, Cheryl G.; Gill, David D.; Ho, Clifford K.; Kolb, William J.; Moss, Timothy A.; Yellowhair, Julius

The Concentrating Solar Technologies Organization at Sandia National Laboratories has a long history of performing important research, development, and testing that has enabled the Concentrating Solar Power Industry to deploy full-scale power plants. Sandia continues to pursue innovative CSP concepts with the goal of reducing the cost of CSP while improving efficiency and performance. In this pursuit, Sandia has developed many tools for the analysis of CSP performance. The following capabilities document highlights Sandias extensive experience in the design, construction, and utilization of large-scale testing facilities for CSP and the tools that Sandia has created for the full characterization of heliostats. Sandia has extensive experience in using these tools to evaluate the performance of novel heliostat designs.

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TYPE SAND Report YEAR 2013
OSTIDOI

Methodology to assess potential glint and glare hazards from concentrating solar power plants: Analytical models and experimental validation

Journal of Solar Energy Engineering, Transactions of the ASME

Ho, Clifford K.; Ghanbari, Cheryl G.; Diver, Richard B.

With a growing number of concentrating solar power systems being designed and developed, the potential impact of glint and glare from concentrating solar collectors and receivers is receiving increased attention as a potential hazard or as a distraction for motorists, pilots, and pedestrians. This paper provides analytical methods to evaluate the irradiance originating from specularly and diffusely reflecting sources as a function of distance and characteristics of the source. Sample problems are provided for both specular and diffuse sources, and validation of the models is performed via testing. In addition, a summary of safety metrics is compiled from the literature to evaluate the potential hazards of calculated irradiances from glint and glare for short-term exposures. Previous safety metrics have focused on prevention of permanent eye damage (e.g., retinal burn). New metrics used in this paper account for temporary after-image, which can occur at irradiance values several orders of magnitude lower than the irradiance values required for irreversible eye damage. © 2011 American Society of Mechanical Engineers.

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TYPE Conference YEAR 2011
ScopusOSTI
18 Results
18 Results