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Assessment of the potential improvement due to multiple apertures in central receiver systems with secondary concentrators

Schmitz, Mark und Schwarzbözl, Peter und Buck, Reiner und Pitz-Paal, Robert (2006) Assessment of the potential improvement due to multiple apertures in central receiver systems with secondary concentrators. Solar Energy, 80, Seiten 111-120. PERGAMON-ELSEVIER SCIENCE LTD. DOI: 10.1016/j.solener.2005.02.012.

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Offizielle URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V50-4FSV0CW-3&_user=100058&_handle=V-WA-A-W-AB-MsSWYWW-UUA-U-AAVAYYAEBY-AABEVZWDBY-ZVUBACCUY-AB-U&_fmt=summary&_coverDate=01%2F31%2F2006&_rdoc=10&_orig=browse&_srch=%23toc%235772%232006%2399919999

Kurzfassung

When striving for maximum efficiencies in solar thermal central receiver systems (CRS) the use of gas turbines with bottoming cycles is inevitable. Pressurized volumetric receivers have proven their feasibility and good performance, and their integration into gas turbine cycles has been demonstrated. One disadvantage of this system is the necessity to use secondary concentrators. The sunlight has to be concentrated into the relatively small glass windows of the receiver, which leads to a limited view cone. This means that of all the possible heliostat positions around the tower, only those within the ellipse, resulting from the section boundary of the view cone with the ground plane, are usable. For small systems, for which tower costs are small, the resulting heliostat field layout is similar, with or without secondary concentrator. For large systems, which are more cost-effective, tower costs become significant, and the losses due to atmospheric attenuation and spillage dominate over the cosine losses. Thus, the purely North-oriented fields become increasingly sub-optimal. This article shall demonstrate at what power levels this problem can be alleviated by not using a single, North-oriented aperture, but up to six apertures—each of them associated with a separate heliostat field.

Dokumentart:Zeitschriftenbeitrag
Titel:Assessment of the potential improvement due to multiple apertures in central receiver systems with secondary concentrators
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Schmitz, MarkNICHT SPEZIFIZIERT
Schwarzbözl, PeterNICHT SPEZIFIZIERT
Buck, ReinerNICHT SPEZIFIZIERT
Pitz-Paal, RobertNICHT SPEZIFIZIERT
Datum:Januar 2006
Erschienen in:Solar Energy
Band:80
DOI :10.1016/j.solener.2005.02.012
Seitenbereich:Seiten 111-120
Verlag:PERGAMON-ELSEVIER SCIENCE LTD
Status:veröffentlicht
Stichwörter:Solar thermal power, Central receiver system, CRS, Gas turbine, Combined cycle, Multiple apertures, Heliostat field, HFLCAL
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:E SF - Solarforschung (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Hochtemperatursysteme (alt)
Standort: Köln-Porz , Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Solarforschung
Hinterlegt von: Dr.-Ing. Mark Schmitz
Hinterlegt am:08 Feb 2006
Letzte Änderung:12 Dez 2013 20:10

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