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Kontas-CP - Flow Through Calorimeter for Online Heat Capactiy Measurement of Thermal Oils in CSP Application

Hilgert, Christoph and Bern, Gregor and Röger, Marc (2012) Kontas-CP - Flow Through Calorimeter for Online Heat Capactiy Measurement of Thermal Oils in CSP Application. SolarPACES 2012, 11.-14. Sept. 2012, Marrakesch, Marroko.

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Abstract

Thermal efficicency analyses of cocnetrating solar collectors are common assessments to evaluate the overall collctor performance. such energy balance studies require accurate measruements of the measruands as well as the knowledge of the specific heatcapcity of theused heat transfer fluid (HTF) Insufficient data quality regarding sepcific heat capacity of thermal oils in parabolic trough applications contribute significantely to the overall measureament uncertainty in the thermal collector assessments, expecially at operation temperatures int he range of 200 to 400°C. This paper describes the technical design and validation measurement of a flow through calorimeter that is capable of measurming the speicifc heat capacity of commonly used HTF at temperatures up to 340°C. Technical key components are explained and a validation measurement using water at ambient temperature is presented. Validation measurements show reuslts within the caluclated relative uncertainty of 1,2%.

Item URL in elib:https://elib.dlr.de/78575/
Document Type:Conference or Workshop Item (Paper)
Title:Kontas-CP - Flow Through Calorimeter for Online Heat Capactiy Measurement of Thermal Oils in CSP Application
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hilgert, Christophchristoph.hilgert (at) dlr.deUNSPECIFIED
Bern, GregorDLR - SolarforschungUNSPECIFIED
Röger, Marcmarc.roeger (at) dlr.deUNSPECIFIED
Date:11 September 2012
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:specific heat capacity, heat transfer fluid, KONTAS, thermal performance, validation
Event Title:SolarPACES 2012
Event Location:Marrakesch, Marroko
Event Type:international Conference
Event Dates:11.-14. Sept. 2012
Organizer:IEA SolarPACES
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Qualifizierung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:06 Dec 2012 17:01
Last Modified:06 Dec 2012 17:01

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