Development of the ASTRI heliostat

Coventry, Joe; Arjomandi, Maziar; Barry, John W.; Blanco, Manuel; Campbell, Jonathan A.; Connor, Phil; Emes, Matthew; Fairman, Philip S.; Farrant, David I.; Ghanadi, Farzin; Grigoriev, Victor; Hall, Colin; Koltun, Paul; Lewis, David A.; Martin, Scott; Nathan, Graham J.; Pye, John; Qiu, Ang; Stuart, Wayne; Tang, Youhong; Venn, Felix; Yu, Jeremy

doi:10.1063/1.4949029

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…To illustrate the use of the proposed cylindrical receiver size optimization approach, the heliostat field of the solar tower defined as reference plant within the Australian Solar Thermal Research Initiative (ASTRI) was chosen as a test case, since published data exists regarding its main techno-economic specifications (27), (1).…”

Section: Analysis Of the Astri Reference Plantmentioning

confidence: 99%

Optimal Sizing of Cylindrical Receivers for Surround Heliostat Fields Using fluxtracer

Grigoriev

Milidonis

Constantinou

et al. 2021

Journal of Solar Energy Engineering

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This article presents an innovative approach for optimizing the dimensions of cylindrical receivers for solar tower systems. In this approach, a single set of rays, representative of a complete annual ray-tracing simulation of the solar tower system, is used and processed to evaluate numerous receiver designs simultaneously and to select the optimum. The simultaneous evaluation of receiver designs is achieved by exploiting the geometrical properties of the intersection between a ray and a cylinder, which allows estimating the annual energy intersected by receiver of different heights without the need for processing the annual set of rays more than one time. Once the annual intersected energy is known for each receiver, the application of a costing function estimating the receiver cost as a function of its surface area allows to estimate their cost and, therefore, to select the receiver dimensions that will yield a minimum surface area for a given annual energy interception factor. The overall workflow to carry out the mentioned receiver optimization approach has been implemented by adapting several open source tools The Cyprus Institute (CyI) is developing in collaboration with the Australian National University (ANU) to assist in the modelling, analysis, design and optimization of Concentrated Solar Thermal (CST) systems. This article also presents a detailed overview of the overall simulation workflow as well as a case study demonstrating the capabilities of the approach.

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Section: Analysis Of the Astri Reference Plantmentioning

confidence: 99%

Optimal Sizing of Cylindrical Receivers for Surround Heliostat Fields Using fluxtracer

Grigoriev

Milidonis

Constantinou

et al. 2021

Journal of Solar Energy Engineering

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“…For example, designing for operation at higher wind loads can result in increasing the operating time of the field before being necessary to stop the production of energy by stowing the heliostats [3]. In addition, overestimation of wind loads, such as stow wind loads identified as being overestimated in a number of heliostat studies, result in a greater heliostat material cost [4,5]. Wind loads also affect the operating efficiency of the plant through wind load induced vibrations, leading to beam misalignment [6], which can also be minimised through thoughtful heliostat design from a deeper understanding of wind loads.…”

Section: Introductionmentioning

confidence: 99%

Heliostat Wind Load Field Measurements at the University of Adelaide Atmospheric Boundary Layer Research Facility (ABLRF)

Marano,

Emes,

Jafari

et al. 2023

SolarPACES Conf Proc

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The University of Adelaide has recently commissioned a facility dedicated to investigating the atmospheric boundary layer (ABL) for the analysis of wind loads on full-scale heliostats. Wind tunnel testing is an affordable way to analyse loads on a scaled structure before committing to a full-scale design. Scale testing however has its challenges as most cases in literature fail to correctly scale the ABL when scaling a model due to the differences between the ratio of the heliostat chord to the boundary layer depth in a wind tunnel and ABL. There is a lack of direct comparison between wind tunnel and full-scale heliostat wind loads. The Atmospheric Boundary Layer Research Facility (ABLRF) consists of arrays of ultrasonic anemometers and a 1.5 aspect ratio heliostat, mounted on a 6-axis load cell, for the comparison of loads measured in the wind tunnel with a full-scale model. Preliminary results categorise the site to have a roughness of 0.01 m to 0.03 m indicating open country farmland, when compared to standards. Comparison between coefficients of lift force, drag force, and hinge moment on the heliostat model at a single elevation angle at the ABLRF and wind tunnel models in literature verify the commissioning of the site, allowing for further in-depth analysis of wind load coefficients at varying elevation and azimuth angles.

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