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TECHNICAL BRIEFS

Multi-tower Line Focus Fresnel Array Project

[+] Author and Article Information
David R. Mills

 Solar Heat and Power (SHP) Pty. Ltd., Level 25, Chifley Tower, Sydney, NSW 2000 Australiadavid@solarheatpower.com

Graham Morrison

School of Mechanical and Manufacturing Engineering,  University of New South Wales, Sydney, NSW Australia 2052g.morrison@unsw.edu.au

John Pye

School of Mechanical and Manufacturing Engineering,  University of New South Wales, Sydney, NSW Australia 2052john.pye@student.unsw.edu.au

Peter Le Lièvre

 Solar Heat and Power (SHP) Pty. Ltd., Level 25, Chifley Tower, Sydney, NSW 2000 Australiapeter@solarheatpower.com

J. Sol. Energy Eng 128(1), 118-120 (Jun 09, 2005) (3 pages) doi:10.1115/1.2148971 History: Received August 11, 2003; Revised June 09, 2005

As an alternative to conventional tracking solar thermal trough systems, one may use line focus Fresnel reflector systems. In a conventional Fresnel reflector design, each field of reflectors is directed to a single tower. However, efficient systems of very high ground utilisation can be setup if a field of reflectors uses multiple receivers on different towers. This paper describes a line focus system, called the compact linear fresnel reflector system and a project to produce an initial 95 MWth solar array. The array will be used as a retrofit preheater for a coal fired generating plant.

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Copyright © 2006 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Sketch of compact linear Fresnel reflector solar array segment showing two parallel absorber lines

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Figure 2

CLFR prototype reflector modules under installation at the Liddell station site

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Figure 3

Phase diagram for 20 mm internal diameter absorber pipes and outlet steam quality of 80%

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Figure 4

Interconnection between solar array and the feed water heater in the conventional power plant

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Figure 5

Stage 1 of Liddell project nearing completion. Stage 1 is 1% of the final array size, or 1350m2. This will be used to test steam conditions.

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Figure 6

Predicted seasonal thermal output of solar array in MWh(th) per day

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