Course paper / final thesis

Thermal Cycling of Solar Absorber Coatings

Starting date

1 September 2017

Duration of contract

6 months

Type of employment


Your mission:

New high temperature solar absorber coatings are being developed within the European project RAISELIFE. These coatings are designed with a high solar absorptance in order to improve the efficiency of steam and molten salt tower receivers. A set of steel substrates and coatings have to be tested under realistic conditions to understand their failure mechanisms and prove their durability. A parabolic dish testing facility has been upgraded at the Plataforma Solar de Almería in order to perform thermal cycles on tubular absorber samples under concentrated solar flux profiles. The focus of the work lies on performing such accelerated aging test campaign, generate experimental data and improve test procedures.

Description of tasks:

  • perform thermal cycles at the dish testing facility on coated samples
  • optical analysis of coated samples
  • measure solar absorptance and thermal emittance
  • image the observed degradation using optical microscopy
  • improve the dish test bench between measurement campaigns
  • infrared temperature measurement and control
  • flux density measurement and control
  • collect and analyze experimental data
  • quality check for thermal cycles and flux profiles
  • evolution of solar absorptance and thermal emittance over cycles

Your qualifications:

  • student of Mechanical Engineering, Process Engineering, Physics
  • good programming skills (Matlab, Labview)
  • ability to work independently and in a Team is desirable
  • ideally strong interest for practical and experimental work

Your benefits:

Look forward to a fulfilling job with an employer who appreciates your commitment and supports your personal and professional development. Our unique infrastructure offers you a working environment in which you have unparalled scope to develop your creative ideas and accomplish your professional objectives. We are striving to increase the proportion of female employees and therefore particularly welcome applications from women. Disabled applicants with equivalent qualifications will be given preferential treatment.

Technical contact

Simon Caron
Institute of Solar Research

Phone: +34 950 278-863

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Vacancy 08784

HR department Cologne

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DLR Institute of Solar Research

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