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Validation of Thermocline Storage Model with Experimental Data of a Laboratory-Scale Molten Salt Test Facility

: Zoschke, T.; Karl, M.; Fluri, T.; Müller, R.

Postprint urn:nbn:de:0011-n-5652109 (454 KByte PDF)
MD5 Fingerprint: ba27db52cc16b7315b9995887e3f50b2
Copyright AIP
Erstellt am: 19.11.2019

Richter, Christoph (Ed.):
SolarPACES 2018, 24th International Conference on Concentrating Solar Power and Chemical Energy Systems : 2-5 October 2018, Casablanca, Morocco
New York, N.Y.: AIP Press, 2019 (AIP Conference Proceedings 2126)
ISBN: 978-0-7354-1866-0
Art. 200034, 5 S.
International Conference on Concentrating Solar Power and Chemical Energy Systems (SolarPACES) <24, 2018, Casablanca>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Thermische Systeme und Gebäudetechnik; Solarthermie; Thermische Speicher für Kraftwerke und Industrie

The Fraunhofer ISE single-tank simulation model was parameterized and inputs were set according to the Fraunhofer ISE lab-scale storage tank in order to validate the model. The measured stratification during the charging cycle was compared to the temperature distribution of the simulated storage tank. If the effective diffusivity factor was calculated according to literature correlations, it corresponded very well with the measurement data with a mean standard deviation of 1.21%. A parameter identification for the effective diffusivity factor of the storage was performed to reduce these deviations even further. It showed that the ideal effective diffusivity factor is 150. The mean standard deviation was further reduced to 1.14 %.