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Measurements of the Forced Convective Heat Loss from Open Cylindrical Cavities of Multi-MW Scale Solar Central Receiver Systems

Siegrist, Silvan and Stadler, Hannes and Hoffschmidt, Bernhard (2018) Measurements of the Forced Convective Heat Loss from Open Cylindrical Cavities of Multi-MW Scale Solar Central Receiver Systems. In: AIP Conference Proceedings, 2033 (040036). American Institute of Physics. SolarPACES 2017, 26.-29. Sept. 2017, Santiago de Chile. DOI: 10.1063/1.5067072

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Official URL: https://aip.scitation.org/doi/abs/10.1063/1.5067072

Abstract

We investigated the forced convective heat loss from a model of a multi-MW cavity receiver of a concentrated solar power (CSP) tower system in a high-pressure wind tunnel. Measurements of 5 geometrical configurations of this model are reported in this contribution. The experiment covered a Reynolds number range of between 2 ⋅ 106 and 8 ⋅ 106, based on the external flow field. The results show that the maximum forced convective heat loss for all configurations occurs when the wind blows from frontal directions of between 60° and 80° relative to the tower symmetry plane. We found that the peak location does not vary for different inclinations, but does vary for different apertures. Also, the results show that the direction of the wind causes the forced convective heat loss to vary with a factor of up to 6.3. Last but not least, we augmented the interpretation of our heat loss measurements with images produced with a Background-oriented Schlieren Imaging (BOS) setup.

Item URL in elib:https://elib.dlr.de/117755/
Document Type:Conference or Workshop Item (Speech)
Title:Measurements of the Forced Convective Heat Loss from Open Cylindrical Cavities of Multi-MW Scale Solar Central Receiver Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siegrist, SilvanSilvan.Siegrist (at) dlr.dehttps://orcid.org/0000-0001-9069-2220
Stadler, HannesHannes.Stadler (at) dlr.dehttps://orcid.org/0000-0001-5122-4221
Hoffschmidt, BernhardUNSPECIFIEDUNSPECIFIED
Date:8 November 2018
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:2033
DOI :10.1063/1.5067072
Publisher:American Institute of Physics
Status:Published
Keywords:Receiver concentrated solar power Tower System wind tunnel
Event Title:SolarPACES 2017
Event Location:Santiago de Chile
Event Type:international Conference
Event Dates:26.-29. Sept. 2017
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Advanced Heat Transfer Media
Location: Jülich
Institutes and Institutions:Institute of Solar Research > Solartowersystems
Institute of Solar Research > Qualification
Deposited By: Uhlig, Tamara
Deposited On:02 Jan 2018 15:48
Last Modified:31 Jul 2019 20:15

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