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Qualification of silicone based HTF for parabolic trough collector applications

Hilgert, Christoph and Jung, Christian and Wasserfuhr, Christoph and Leon, Javier and Valenzuela, Loreto (2019) Qualification of silicone based HTF for parabolic trough collector applications. In: AIP Conference Proceedings, 2126 (080003), pp. 1-10. SolarPACES Conference 2018, 8.-12. Okt. 2018, Casablanca, Morocco. DOI: 10.1063/1.5117598

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Official URL: https://aip.scitation.org/doi/abs/10.1063/1.5117598


HELISOL® 5A has been subject to continuous research since 2012. This paper presents at selection of the most relevant test and measurement results gained along the parabolic trough collector application related qualification of this new HTF. HELISOL® 5A successfully demonstrated its loop scale functionality achieving the proof of concept at Plataforma Solar de Almería (PSA) after 480 hours of operation at 425 °C. The degradation processes induced Formation of low boiling and gaseous products is shown for the aging tests in lab environment and for the loop scale application. In terms of operational safety five key investigations are presented. Three of which include the direct comparison with the commonly used mixture of diphenyl oxide and biphenyl (DPO/BP) the wick flame persistence test, the reaction of HELISOL® 5A and DPO/BP with molten salt and the spray ignition test. The other two tests cover the flammability of HELISOL® 5A in contact with hot (475 °C) surfaces and the worst case scenario of a tube rupture at collector level at 420 °C / 17 bar which both don’t lead to ignition of the HTF.

Item URL in elib:https://elib.dlr.de/128832/
Document Type:Conference or Workshop Item (Speech)
Title:Qualification of silicone based HTF for parabolic trough collector applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hilgert, ChristophChristoph.Hilgert (at) dlr.dehttps://orcid.org/0000-0002-9985-7367
Jung, ChristianChristian.Jung (at) dlr.dehttps://orcid.org/0000-0002-5893-4979
Wasserfuhr, ChristophTÜV NordUNSPECIFIED
Date:25 July 2019
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/1.5117598
Page Range:pp. 1-10
Event Title:SolarPACES Conference 2018
Event Location:Casablanca, Morocco
Event Type:international Conference
Event Dates:8.-12. Okt. 2018
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
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualification
Deposited By: Kruschinski, Anja
Deposited On:20 Nov 2019 15:18
Last Modified:26 Jul 2020 03:00

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