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Economic Chances and Technical Risks of the Internal Direct Absorption Receiver (IDAR)

Singer, Csaba und Buck, Reiner und Pitz-Paal, Robert und Müller-Steinhagen, Hans (2012) Economic Chances and Technical Risks of the Internal Direct Absorption Receiver (IDAR). 6th International Conference on Energy Sustainability, 2012-07-23 - 2012-07-26, San Diego, California. doi: 10.1115/ES2012-91095.

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Kurzfassung

Increased receiver temperatures of solar tower power plants are proposed to decrease the plants levelized electricity costs (LEC) due to the utilization of supercritical steam power plants and thus higher overall plant efficiency. Related to elevated receiver temperatures preliminary concept studies show a distinct LEC reduction potential of the internal direct absorption receiver (IDAR), if it is compared to liquid in tube (LIT) or beam down (BD) receiver types. The IDAR is characterized by a downwards oriented aperture of a cylindrical cavity, whose internal lateral area is illuminated from the concentrator field and cooled by a liquid molten salt film. The objective is the further efficiency enhancement, as well as the identification and assessment of the technical critical aspects. For this a detailed fluid mechanic and thermodynamic receiver model of the novel receiver concept is developed to be able to analyze the IDAR’s operating performance at full size receiver geometries. The model is used to analyze the open parameters concerning the feasibility, functionality and performance of the concept. Hence, different system management strategies are examined and assessed, which lead to the proposal of a cost optimized lead-concept. This concept involves a rotating receiver system with inclined absorber walls. The spatial arrangements of the absorber walls minimize thermal losses of the receiver and enhance film stability. The centrifugal forces acting on the liquid salt film are essential to realize the required system criteria, which are related to the maximal molten salt temperature, film stability and droplet ejection. Compared to the state of the art at a 200 MWel power level the IDAR concept can lead to a LEC reduction of up to 8 %. The cost assumptions made for the assessment are quantified with sensitivity analysis.

elib-URL des Eintrags:https://elib.dlr.de/79012/
Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Economic Chances and Technical Risks of the Internal Direct Absorption Receiver (IDAR)
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Singer, Csabacsaba.singer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Buck, Reinerreiner.buck (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Pitz-Paal, RobertRobert.Pitz-Paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391NICHT SPEZIFIZIERT
Müller-Steinhagen, HansDresden University of TechnologyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2012
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.1115/ES2012-91095
Status:veröffentlicht
Stichwörter:solar tower, IDAR, LIT, BD
Veranstaltungstitel:6th International Conference on Energy Sustainability
Veranstaltungsort:San Diego, California
Veranstaltungsart:Konferenz
Veranstaltungsbeginn:23 Juli 2012
Veranstaltungsende:26 Juli 2012
Veranstalter :ASME 2012
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende Solarsysteme (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Punktfokussierende Systeme (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Solarforschung > Punktfokussierende Systeme
Hinterlegt von: Uhlig, Tamara
Hinterlegt am:06 Dez 2012 16:24
Letzte Änderung:24 Apr 2024 19:45

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