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Browsing by Subject "Heliostat"

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25m2 target-aligned heliostat with closed-loop control

Author: Roos, TH ; Zwane, NX ; Kruger, E ; Perumal, S ; Cathro, R Date: Sep 2007 A 252m target-aligned research heliostat with closed-loop control, with a theoretical concentration of 80 suns, has been built at CSIR in South Africa. The heliostat has four degrees of freedom: Azimuth, Elevation, Rotation and Pitch. A control ... Read more
Concentrating solar power research at CSIR

Author: Roos, T Date: Oct 2012 This presentation details the development of a 500kW thermal concentrating solar research facility at the CSIR. Read more
Control design profits heliostat techno-economics

Author: Rubin, N ; Roos, T ; Wilson, F ; De Villiers, J ; Perumal, S Date: May 2012 Modelling, Identification, Simulation and Synthesis are well known components of the System Engineering Process. Ally these with the Target Aligned (TA) heliostat architecture and the universally acknowledged merits of using closed loop ... Read more
The flux distribution from a 1.25m2 target aligned heliostat: comparison of ray tracing and experimental results

Author: Maliage, M ; Roos, TH Date: May 2012 The purpose of this paper is to validate SolTrace for concentrating solar investigations at CSIR by means of a test case: the comparison of the flux distribution in the focal spot of a 1.25 m2 target aligned heliostat predicted by the ray ... Read more
Modifications to 25m2 target-aligned research Heliostat mirror panels

Author: Roos, TH ; Rossouw, F ; Van Zyl, Louwrens H Date: Sep 2009 Several heliostat mirror panels of the CSIR 25m2 target-aligned heliostat suffered corrosion-related failure, prompting a panel redesign. Two test samples of the new design were subjected to mechanical and thermal cycling tests in an attempt ... Read more
A wind loading correlation for an isolated square heliostat part 2: Moments and side forces

Author: Roos, TH Date: May 2012 One of the design requirements of a heliostat is the ability to withstand storm wind loads in the stow position and operational wind loads in any position. To design a heliostat, therefore, one must be able to predict the wind loading on the ... Read more
A wind loading correlation for an isolated square heliostat, part 1: lift and drag forces

Author: Roos, TH Date: May 2012 A design requirement of a heliostat is the ability to withstand storm loads in the stow position and operational wind loads in any position. To design a heliostat, therefore, one must be able to predict the wind loading on the heliostat for ... Read more

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Browsing by Subject "Heliostat"

Browsing by Subject "Heliostat"

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