Direct steam generation (DSG) represents a promising option to improve today’s parabolic trough technology for solar thermal power generation. The European DISS and INDITEP projects have proven the feasibility of the DSG process under real solar conditions at the DISS test facility at the Plataforma Solar de Almería (PSA) (Zarza, E., Valenzuela, L., Léon, J., Hennecke, K., Eck, M., Weyers, H.-D., Eickhoff, M., 2004, “Direct Steam Generation in Parabolic Troughs Final Results and Conslusions of the DISS Project,” Energy, 29, pp. 635–644). These projects have also shown that the recirculation mode is the preferred operation mode for DSG collector fields. This concept requires water-steam separators at the end of the evaporation section of the collector loop. Both compact water-steam separators for every single row or huge separation drums for the whole collector field are considered. Small compact water-steam separators show a lower inertia, reducing the time for start-up. Within INDITEP and the German R&D project SOLDI compact water-steam separators have been developed, manufactured, and tested by DLR and Siemens, with its subcontractor Framatome ANP. Prototypes of a cyclone and a baffle separator have been implemented into the DISS test facility. More than 200 tests have been performed to investigate the separation efficiency, the pressure loss, and the performance under transient conditions. This paper focuses on the steady-state tests.
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February 2008
Research Papers
Field Test of Water-Steam Separators for Direct Steam Generation in Parabolic Troughs
Markus Eck,
Markus Eck
German Aerospace Center (DLR),
e-mail: markus.eck@dlr.de
Institute of Technical Thermodynamics
, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
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Holger Schmidt,
Holger Schmidt
Framatome ANP
, Freyerslebenstrasse 1, 91058 Erlangen, Germany
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Martin Eickhoff,
Martin Eickhoff
German Aerospace Center (DLR),
Institute of Technical Thermodynamics
, Plataforma Solar de Almería, 04200 Tabernas/Almería, Spain
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Tobias Hirsch
Tobias Hirsch
German Aerospace Center (DLR),
Institute of Technical Thermodynamics
, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
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Markus Eck
German Aerospace Center (DLR),
Institute of Technical Thermodynamics
, Pfaffenwaldring 38-40, 70569 Stuttgart, Germanye-mail: markus.eck@dlr.de
Holger Schmidt
Framatome ANP
, Freyerslebenstrasse 1, 91058 Erlangen, Germany
Martin Eickhoff
German Aerospace Center (DLR),
Institute of Technical Thermodynamics
, Plataforma Solar de Almería, 04200 Tabernas/Almería, Spain
Tobias Hirsch
German Aerospace Center (DLR),
Institute of Technical Thermodynamics
, Pfaffenwaldring 38-40, 70569 Stuttgart, GermanyJ. Sol. Energy Eng. Feb 2008, 130(1): 011002 (6 pages)
Published Online: December 28, 2007
Article history
Received:
September 25, 2006
Revised:
April 11, 2007
Published:
December 28, 2007
Citation
Eck, M., Schmidt, H., Eickhoff, M., and Hirsch, T. (December 28, 2007). "Field Test of Water-Steam Separators for Direct Steam Generation in Parabolic Troughs." ASME. J. Sol. Energy Eng. February 2008; 130(1): 011002. https://doi.org/10.1115/1.2804619
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