Solar thermal energy generation needs receiver technologies which can drive highly efficient turbines and decouple the collection of energy from its use by an economic storage technology. High-temperature solid particle receivers for solar tower systems with particle storage are one option. Important issues regarding high-temperature particle receivers are minimization of convective losses, no particle loss due to susceptibility to wind, and high efficiency also in part-load operation. A design approach facing these challenges is the face-down receiver using recirculation of particles. A screening performance analysis studying different recirculation patterns is presented. Using smart recirculation schemes, high receiver efficiencies can be maintained also at part-load operation (100% load ∼90%; 50% load ∼86%; 20% load ∼67%). Simulations of the face-down geometry yield total annual solar-to-electric efficiencies of 24% using a surround field. From the analyses, it can be concluded that solid particle receivers using smart recirculation patterns are a viable receiver option for storage and high-temperature high-efficiency turbine processes.
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e-mail: marc.roeger@dlr.de
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August 2011
Research Papers
Face-Down Solid Particle Receiver Using Recirculation
Marc Röger,
Marc Röger
German Aerospace Center (DLR), Solar Research, Plataforma Solar de Almería, 04200 Tabernas,
e-mail: marc.roeger@dlr.de
Spain
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Lars Amsbeck,
Lars Amsbeck
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
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Birgit Gobereit,
Birgit Gobereit
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
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Reiner Buck
Reiner Buck
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
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Marc Röger
German Aerospace Center (DLR), Solar Research, Plataforma Solar de Almería, 04200 Tabernas,
Spain
e-mail: marc.roeger@dlr.de
Lars Amsbeck
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
Birgit Gobereit
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
Reiner Buck
German Aerospace Center (DLR), Solar Research, 70569 Stuttgart,
Germany
J. Sol. Energy Eng. Aug 2011, 133(3): 031009 (8 pages)
Published Online: July 25, 2011
Article history
Received:
January 23, 2011
Revised:
April 19, 2011
Online:
July 25, 2011
Published:
July 25, 2011
Citation
Röger, M., Amsbeck, L., Gobereit, B., and Buck, R. (July 25, 2011). "Face-Down Solid Particle Receiver Using Recirculation." ASME. J. Sol. Energy Eng. August 2011; 133(3): 031009. https://doi.org/10.1115/1.4004269
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