Nouri, Bijan und Röger, Marc und Janotte, Nicole und Hilgert, Christoph (2018) Characterization and Corrections for Clamp-On Fluid Temperature Measurements in Turbulent Flows. Journal of Thermal Science and Engineering Applications, 10 (031011), Seiten 1-11. American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4038706. ISSN 1948-5085.
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Kurzfassung
A clamp-on measurement system for flexible and accurate fluid temperature measurements for turbulent flows with Reynolds numbers higher than 30,000 is presented in this paper. This noninvasive system can be deployed without interference with the fluid flow while delivering the high accuracies necessary for performance and acceptance testing for power plants in terms of measurement accuracy and position. The system is experimentally validated in the fluid flow of a solar thermal parabolic trough collector test bench, equipped with built-in sensors as reference. Its applicability under industrial conditions is demonstrated at the 50 MWel AndaSol-3 parabolic trough solar power plant in Spain. A function based on large experimental data correcting the temperature Gradient between the measured clamp-on sensor and actual fluid temperature is developed, achieving an uncertainty below 60.7 K (2r) for fluid temperatures up to 400 C. In addition, the experimental results are used to validate a numerical model. Based on the results of this model, a general dimensionless correction function for a wider range of application scenarios is derived. The clamp-on system, together with the dimensionless correction function, supports numerous combinations of fluids, pipe materials, insulations, geometries, and operation conditions and should be useful in a variety of industrial applications of the power and chemical industry where temporal noninvasive fluid temperature measurement is needed with good accuracy. The comparison of the general dimensionless correction function with measurement data indicates a measurement uncertainty below 1 K (2r).
elib-URL des Eintrags: | https://elib.dlr.de/120305/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | Characterization and Corrections for Clamp-On Fluid Temperature Measurements in Turbulent Flows | ||||||||||||||||||||
Autoren: |
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Datum: | Juni 2018 | ||||||||||||||||||||
Erschienen in: | Journal of Thermal Science and Engineering Applications | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 10 | ||||||||||||||||||||
DOI: | 10.1115/1.4038706 | ||||||||||||||||||||
Seitenbereich: | Seiten 1-11 | ||||||||||||||||||||
Verlag: | American Society of Mechanical Engineers (ASME) | ||||||||||||||||||||
ISSN: | 1948-5085 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | temperature measurement, fluid temperature, turbulent flow, PT100, correction function, clamp on system, Performance testing, acceptance testing, CSP, solar power plant, parabolic trough | ||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||
HGF - Programm: | Erneuerbare Energie | ||||||||||||||||||||
HGF - Programmthema: | Konzentrierende solarthermische Technologien | ||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||
DLR - Forschungsgebiet: | E SW - Solar- und Windenergie | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Einfluss von Wüstenbedingungen (alt) | ||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Solarforschung > Qualifizierung | ||||||||||||||||||||
Hinterlegt von: | Kruschinski, Anja | ||||||||||||||||||||
Hinterlegt am: | 18 Sep 2018 08:30 | ||||||||||||||||||||
Letzte Änderung: | 02 Nov 2023 10:15 |
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