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In-situ heat loss measurement of parabolic trough receivers based on transient infrared thermography

Caron, Simon und Röger, Marc (2016) In-situ heat loss measurement of parabolic trough receivers based on transient infrared thermography. Solar Energy, 135, Seiten 111-121. Elsevier. doi: 10.1016/j.solener.2016.05.033. ISSN 0038-092X.

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Offizielle URL: http://authors.elsevier.com/a/1T8gH,tRc-0ZX

Kurzfassung

The design lifetime of parabolic trough receivers is at least 25 years. However, depending on the specific operating conditions, this expected lifetime may be shortened. A periodic inspection of receivers mounted in a solar field is thus recommended. Several field methods with distinct depth of information and field throughput exist to estimate receiver thermal performance. This paper gives an overview of these field methods and presents the application of a transient infrared thermography method, which combines dynamic temperature measurements with a numerical heat transfer model in order to derive specific receiver heat losses and separate internal heat loss mechanisms. This method has been previously investigated under laboratory test conditions and is here applied under field test conditions for in-situ thermal measurements on mounted receivers. The transient thermography method allows a correct estimation of specific heat losses within a precision range below ±10% for all tested receivers under field test conditions. Relevant separation of heat loss mechanisms could be derived for evacuated PTRs with solar selective absorber coating, while partially based diagnoses could be observed for partially or non-evacuated PTRs with highly emissive absorber coatings. Active thermography is considered as a relevant tool for receiver field inspection, in combination with a complementary field screening measurement technique.

elib-URL des Eintrags:https://elib.dlr.de/104634/
Dokumentart:Zeitschriftenbeitrag
Titel:In-situ heat loss measurement of parabolic trough receivers based on transient infrared thermography
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Caron, SimonSimon.Caron (at) dlr.dehttps://orcid.org/0000-0002-7699-8108NICHT SPEZIFIZIERT
Röger, MarcMarc.Roeger (at) dlr.dehttps://orcid.org/0000-0003-0618-4253NICHT SPEZIFIZIERT
Datum:2016
Erschienen in:Solar Energy
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:135
DOI:10.1016/j.solener.2016.05.033
Seitenbereich:Seiten 111-121
Verlag:Elsevier
ISSN:0038-092X
Status:veröffentlicht
Stichwörter:parabolic trough receiver, in-situ heat loss measurement, transient infrared thermography, inverse heat transfer problem
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende solarthermische Technologien
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Einfluss von Wüstenbedingungen (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung > Qualifizierung
Hinterlegt von: Kruschinski, Anja
Hinterlegt am:27 Jul 2016 14:30
Letzte Änderung:06 Nov 2023 08:52

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