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Improved performance of open volumetric receivers by employing an external air return system

Stadler, Hannes and Tiddens, Arne Tidde and Schwarzbözl, Peter and Göhring, Felix and Baumann, Torsten and Trautner, Johannes (2017) Improved performance of open volumetric receivers by employing an external air return system. Solar Energy, 155, pp. 1157-1164. Elsevier. DOI: 10.1016/j.solener.2017.07.050 ISSN 0038-092X

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Official URL: http://www.sciencedirect.com/science/article/pii/S0038092X17306357?via%3Dihub

Abstract

In solar central receiver power plants open volumetric receivers using air as heat transfer fluid are an alternative to the currently predominant receiver types, namely salt and steam receivers. In order to improve their competitiveness, the receiver performance has to be improved. In the current study an external air return system has been integrated in the Solar Tower Jülich and its influence on power plant performance has been investigated. With this system, the parasitic losses caused by the fans are reduced by up to 34%. The measured air return ratio is mostly unaffected, but the current data suggest, that the internal and external convective losses of the receiver are reduced when an external air return system is applied. A positive influence of the total mass flow on the air return ratio has been identified for the current data while other parameters like the return air temperature turned out to be less significant.

Item URL in elib:https://elib.dlr.de/113960/
Document Type:Article
Title:Improved performance of open volumetric receivers by employing an external air return system
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stadler, HannesHannes.Stadler (at) dlr.deUNSPECIFIED
Tiddens, Arne TiddeArne.Tiddens (at) dlr.deUNSPECIFIED
Schwarzbözl, PeterPeter.Schwarzboezl (at) dlr.deUNSPECIFIED
Göhring, FelixFelix.Goehring (at) dlr.dehttps://orcid.org/0000-0002-8514-0453
Baumann, TorstenTorsten.Baumann (at) dlr.dehttps://orcid.org/0000-0002-6748-4009
Trautner, JohannesKraftanlagen München GmbH, Ridler Straße 31c, 80339 München, GermanyUNSPECIFIED
Date:17 July 2017
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:155
DOI :10.1016/j.solener.2017.07.050
Page Range:pp. 1157-1164
Publisher:Elsevier
Series Name:Elsevier Ldt
ISSN:0038-092X
Status:Published
Keywords:Open volumetric receiver; Air return ratio; Tracer gas measurement; External air return
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 > Punktfokussierende Systeme
Deposited By: Uhlig, Tamara
Deposited On:19 Sep 2017 15:00
Last Modified:31 Jul 2019 20:11

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