Airborne soiling measurements of entire solar fields with Qfly

Wolfertstetter, Fabian and Fonk, Robin and Prahl, Christoph and Röger, Marc and Wilbert, Stefan and Fernandez-Reche, Jesus (2020) Airborne soiling measurements of entire solar fields with Qfly. In: 2019 International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2019, 2303 (100008). AIP Publishing. SolarPACES Conference 2020, 2019-10-01 - 2019-10-04, Daegu, South Corea. doi: 10.1063/5.0028968. ISBN 978-073544037-1. ISSN 0094-243X.

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Official URL: https://doi.org/10.1063/5.0028968

Abstract

Concentrating Solar Power (CSP) plants are often being built in regions with high dust loads such as the Middle East and North Africa. Current soiling measurement methods in solar fields are labor and cost intensive and they only cover small measurement spots. Even a high number of manual measurements can only cover a minimal portion of the total solar field mirror surface. Airborne measurement solutions such as QFly have been developed in recent years to measure the geometry and tracking accuracy of the large CSP mirror areas. Soiling on solar mirrors is qualitatively visible in raw QFly measurement images. In this study we present a method to automatically derive the mirror cleanliness from aerial images taken with QFly. We present scattering investigations that correct for the directional particle scattering, illumination and camera viewing angles. A promising correlation was found between the thus corrected camera RGB signals and reference reflectance measurements that shows an RMSD of 3% for the investigated dust.

Item URL in elib:

https://elib.dlr.de/139995/

Document Type:

Conference or Workshop Item (Speech)

Title:

Airborne soiling measurements of entire solar fields with Qfly

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Wolfertstetter, Fabian	fabian.wolfertstetter (at) dlr.de	https://orcid.org/0000-0003-4323-8433	UNSPECIFIED
Fonk, Robin	SF-QLF	UNSPECIFIED	UNSPECIFIED
Prahl, Christoph	christoph.prahl (at) dlr.de	https://orcid.org/0000-0002-8596-9050	UNSPECIFIED
Röger, Marc	Marc.Roeger (at) dlr.de	https://orcid.org/0000-0003-0618-4253	UNSPECIFIED
Wilbert, Stefan	Stefan.Wilbert (at) dlr.de	https://orcid.org/0000-0003-3573-3004	UNSPECIFIED
Fernandez-Reche, Jesus	CIEMAT-PSA	UNSPECIFIED	UNSPECIFIED

Date:

December 2020

Journal or Publication Title:

2019 International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2019

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

2303

DOI:

10.1063/5.0028968

Publisher:

AIP Publishing

Series Name:

AIP Conference Proceedings

ISSN:

0094-243X

ISBN:

978-073544037-1

Status:

Published

Keywords:

Soiling measurement, QFly, Airborne measurement,

Event Title:

SolarPACES Conference 2020

Event Location:

Daegu, South Corea

Event Type:

international Conference

Event Start Date:

1 October 2019

Event End Date:

4 October 2019

Organizer:

SolarPACES

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 (old)

Location:

Köln-Porz

Institutes and Institutions:

Institute of Solar Research > Qualification

Deposited By:

Kruschinski, Anja

Deposited On:

04 Jan 2021 12:01

Last Modified:

18 Feb 2025 12:31

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