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Spectroscopic characterization of radiative transport phenomena in high-temperature energy conversion processes

English title Spectroscopic characterization of radiative transport phenomena in high-temperature energy conversion processes
Applicant Steinfeld Aldo
Number 117372
Funding scheme R'EQUIP
Research institution Institut für Energietechnik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Mechanical Engineering
Start/End 01.09.2007 - 31.12.2008
Approved amount 69'500.00
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All Disciplines (2)

Mechanical Engineering
Technical Physics

Keywords (6)

thermal radiation; concentrated solar power; solar thermochemistry; spectroscopy; reactor engineering; energy

Lay Summary (English)

Lay summary
The spectroscopy system proposed is aimed at measuring the spectral extinction coefficient, the absorption coefficient, the scattering phase function, and the bi-directional reflectivity as a function of wavelength and direction. The current system comprises a double VIS-IR lamp coupled to a double monochromator as the radiation source, collimating/focusing lenses, a sample group, and a detector. It enables measurements of spectral transmittance in the wavelength range 0.3-4 micron for materials of moderate optical thickness such as reticulate porous ceramics and particle clouds. The upgrade proposed will enable the extension of the spectral range to 0.2-10 micron, the measurements of directional characteristics, and investigation of highly-attenuating materials. The proposed upgraded system will be unique in its capabilities to measure accurately the radiative properties of fluidized beds, packed beds, aerosol flows, porous structures, reticulate ceramics, micro channels, and other solid-gas configurations that are used in high-temperature solar chemical reactors.
The significance of the research lies in the advancement of the thermal sciences applied to solar chemical technologies that will lead to cleaner, more efficient, and sustainable energy utilization.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Associated projects

Number Title Start Funding scheme
173717 A Novel Approach to Determine Radiation Properties of Particle Suspensions with a Laser-Based Goniometry System 01.02.2017 International short research visits