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On the influence of rotation on thermal convection in a rotating cavity for solar receiver applications

Wu, Wei und Amsbeck, Lars und Buck, Reiner und Waibel, Niklas und Langner, Philipp und Pitz-Paal, Robert (2014) On the influence of rotation on thermal convection in a rotating cavity for solar receiver applications. Applied Thermal Engineering, 70 (1), Seiten 694-704. DOI: 10.1016/j.applthermaleng.2014.03.059. ISSN 1359-4311.

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Kurzfassung

In order to address the world's high-energy demand, a novel particle receiver concept for concentrating solar power (CSP) plants has been developed. A key feature of the concept is to exploit a receiver rotation being able to adjust the receiver outlet temperature to different load states. Within the scope of identifying the thermal receiver efficiency investigations regarding convection losses of a rotating cavity are conducted. Special attention is paid to the effect of rotation on convective flow in a cylindrical cavity with heated side walls for solar applications. Experiments with a rotating cavity in laboratory scale have clearly revealed a negligible effect of rotation on convective losses in the considered rotation speed range. Compared to the influence of receiver inclination, where the convective losses can be decreased up to 90% for downward-facing receivers, rotation affects them only by at most ±10%. Considering overall thermal losses in the receiver (including conduction and radiation losses), the effect of rotation might be even less than 1% of the incoming solar power.

Dokumentart:Zeitschriftenbeitrag
Titel:On the influence of rotation on thermal convection in a rotating cavity for solar receiver applications
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Wu, Weiwei.wu@dlr.de
Amsbeck, Larslars.amsbeck@dlr.de
Buck, Reinerreiner.buck@dlr.de
Waibel, Niklasextern
Langner, Philippextern
Pitz-Paal, Robertrobert.pitz-paal@dlr.de
Datum:9 Mai 2014
Erschienen in:Applied Thermal Engineering
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:70
DOI :10.1016/j.applthermaleng.2014.03.059
Seitenbereich:Seiten 694-704
Name der Reihe:Elsevier Ltd.
ISSN:1359-4311
Status:veröffentlicht
Stichwörter:Convection; Rotating cavity; Particle receiver; Concentrating solar power
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende Solarsysteme
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Punktfokussierende Systeme
Standort: Stuttgart
Institute & Einrichtungen:Institut für Solarforschung > Punktfokussierende Systeme
Hinterlegt von: Tamara Schmutz
Hinterlegt am:07 Aug 2014 15:54
Letzte Änderung:07 Aug 2014 15:54

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