On the example of the HelioTrough® collector development the full accompanying and supporting qualification program for large-scale parabolic trough collectors for solar thermal power plants is described from prototype to demonstration loop scale. In the evaluation process the actual state and the optimization potential are assessed. This includes the optical and geometrical performance determined by concentrator shape, deformation, assembly quality and local intercept factor values. Furthermore, its mechanical performance in terms of tracking accuracy and torsional stiffness and its thermal system performance on the basis of the overall thermal output and heat loss are evaluated. Demonstration loop tests deliver results of collector modules statistical slope deviation of 1.9 to 2.6 mrad, intercept factor above 98%, peak optical performance of 81.6% and heat loss coefficients from field tests. The benefit of such a closely monitored development lies in prompt feedback on strengths, weaknesses and potential improvements on the new product at any development stage from first module tests until demonstration loop evaluation. The product developer takes advantage of the achieved technical maturity, already before the implementation in a commercial power plant. The well-understood performance characteristics allow the reduction of safety margins making the new HelioTrough collector competitive from the start.
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27 June 2017
SOLARPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems
11–14 October 2016
Abu Dhabi, United Arab Emirates
Research Article|
June 27 2017
Full parabolic trough qualification from prototype to demonstration loop
Nicole Janotte;
Nicole Janotte
a)
1
DLR German Aerospace Center
, Linder Hoehe, 51147 Cologne (Germany
)
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Eckhard Lüpfert;
Eckhard Lüpfert
b)
1
DLR German Aerospace Center
, Linder Hoehe, 51147 Cologne (Germany
)
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Klaus Pottler;
Klaus Pottler
c)
2
CSP Services GmbH
, Friedrich-Ebert-Ufer 30, 51143 Cologne (Germany
)
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Mark Schmitz
Mark Schmitz
d)
3
TSK Flagsol Engineering GmbH
, Anna-Schneider-Steig 10, 50678 Cologne (Germany
)
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a)
Corresponding author: nicole.janotte@dlr.de
AIP Conf. Proc. 1850, 020010 (2017)
Citation
Nicole Janotte, Eckhard Lüpfert, Klaus Pottler, Mark Schmitz; Full parabolic trough qualification from prototype to demonstration loop. AIP Conf. Proc. 27 June 2017; 1850 (1): 020010. https://doi.org/10.1063/1.4984334
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