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Flux density measurement for industrial-scale solar power towers using the reflection off the absorber

Offergeld, Matthias and Röger, Marc and Stadler, Hannes and Gorzalka, Philip and Hoffschmidt, Bernhard (2019) Flux density measurement for industrial-scale solar power towers using the reflection off the absorber. In: AIP Conference Proceedings, 2126 (110002), pp. 1-8. SolarPACES Conference, 8-12. Okt. 2018, Casablanca, Morocco. DOI: 10.1063/1.5117617

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Official URL: https://aip.scitation.org/doi/abs/10.1063/1.5117617


Flux density measurement is precious for operation as well as for performance testing of solar power towers. The radiation reflected off the absorber can be used for this task. The disturbance of the plant operation is close to zero. Besides a digital camera, a computer and optionally a radiometer, almost no further hardware is required. That’s why it is suitable for industrial-scale receivers. This paper presents several enhancements for this measuring process. Especially the so-called “scan method” appears promising, because it leads to significantly smoother flux density results compared to formerly presented methods. The article also deals with the determination of the irradiation’s directional composition as well as with calibration routines. The proposed innovations were demonstrated at the Juelich Solar Tower with its open volumetric receiver and are likely to be suitable for external tube receivers, too. A plausibility check using CFD simulations was carried out. In summary, the discussed techniques show promise for future application at large-scale solar towers.

Item URL in elib:https://elib.dlr.de/128879/
Document Type:Conference or Workshop Item (Speech)
Title:Flux density measurement for industrial-scale solar power towers using the reflection off the absorber
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Offergeld, MatthiasMatthias.Offergeld (at) dlr.deUNSPECIFIED
Röger, MarcMarc.Roeger (at) dlr.dehttps://orcid.org/0000-0003-0618-4253
Stadler, HannesHannes.Stadler (at) dlr.dehttps://orcid.org/0000-0001-5122-4221
Gorzalka, PhilipPhilip.Gorzalka (at) dlr.dehttps://orcid.org/0000-0002-1274-0378
Hoffschmidt, BernhardBernhard.Hoffschmidt (at) dlr.deUNSPECIFIED
Date:25 July 2019
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/1.5117617
Page Range:pp. 1-8
Keywords:flux density measurements, Performance testing, solar power Towers,
Event Title:SolarPACES Conference
Event Location:Casablanca, Morocco
Event Type:international Conference
Event Dates:8-12. Okt. 2018
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 - Impact of Desert Environment
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualification
Deposited By: Kruschinski, Anja
Deposited On:20 Nov 2019 15:18
Last Modified:26 Jul 2020 03:00

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