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Durability Testing of Solar Receiver Coatings: Experimental Results for T91 and VM12 Substrates

Caron, Simon and Binyamin, Y. and Agüero, A. and Hildebrandt, C. and Galetz, M.C. and Sutter, Florian (2019) Durability Testing of Solar Receiver Coatings: Experimental Results for T91 and VM12 Substrates. SolarPACES Conference 2019, 1. - 4. October 2019, Daegu, South Corea. (Submitted)

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Abstract

In Central Receiver Systems, the receiver coating absorbs the concentrated sunlight from the heliostat field and needs to withstand high thermal stresses in harsh desert climates. Coating degradation is associated to high repair and down-time costs and therefore several research activities have been conducted in the past years to increase the Service lifetime of receiver coatings. This paper presents the durability test results of six novel receiver coatings developed for operation temperatures of 600°C. The coatings were deposited on ferritic-martensitic steel coupons made of T91 and VM12-SHC. The testing program involved a sequential accelerated aging test: on-sun testing with an average flux Level of 300 kW/m² was combined with isothermal furnace testing and humidity testing at low temperature to mimic condensation on the receiver during night-time. In addition, climate chamber tests have been carried out. This paper summarizes test results and identifies the most promising coating developments.

Item URL in elib:https://elib.dlr.de/130857/
Document Type:Conference or Workshop Item (Speech)
Title:Durability Testing of Solar Receiver Coatings: Experimental Results for T91 and VM12 Substrates
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Caron, SimonSimon.Caron (at) dlr.dehttps://orcid.org/0000-0002-7699-8108
Binyamin, Y.Brightsource IndustriesUNSPECIFIED
Agüero, A.INTAUNSPECIFIED
Hildebrandt, C.Fraunhofer ISEUNSPECIFIED
Galetz, M.C.Dechema FoschungsinstitutUNSPECIFIED
Sutter, FlorianFlorian.Sutter (at) dlr.dehttps://orcid.org/0000-0002-2981-5807
Date:2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Submitted
Keywords:solar Receiver coatings
Event Title:SolarPACES Conference 2019
Event Location:Daegu, South Corea
Event Type:international Conference
Event Dates:1. - 4. October 2019
Organizer:SolarPACES
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 15:19
Last Modified:20 Nov 2019 15:19

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