The radiative characteristics of dependently scattering packed-beds of ZnO particles, applied in the design of high-temperature solar thermochemical reactors, were investigated experimentally. ZnO samples of varying thickness were exposed to a continuous beam of near monochromatic thermal radiation in the wavelength range. The overall transmitted fraction measured as a function of sample thickness obeys an exponential trend , with the fit parameter ranging from at 555 nm to at . In the forward directions, the measured intensity distribution is approximately isotropic, whereas in the backward directions it is well approximated by a Henyey–Greenstein equation with asymmetry factors at 555 nm and at . A Monte Carlo ray-tracing model of the experimental setup is employed to extract the extinction coefficient and the scattering albedo for the case of a nongray absorbing-scattering medium.
Skip Nav Destination
e-mail: aldo.steinfeld@ethz.ch
Article navigation
Research Papers
Experimental and Numerical Determination of Thermal Radiative Properties of ZnO Particulate Media
P. Coray,
P. Coray
Solar Technology Laboratory,
Paul Scherrer Institute
, 5232 Villigen, Switzerland
Search for other works by this author on:
W. Lipiński,
W. Lipiński
Department of Mechanical Engineering,
University of Minnesota
, Minneapolis, MN 55455
Search for other works by this author on:
A. Steinfeld
A. Steinfeld
Department of Mechanical and Process Engineering,
e-mail: aldo.steinfeld@ethz.ch
ETH Zurich
, 8092 Zurich, Switzerland; and Solar Technology Laboratory, Paul Scherrer Institute
, 5232 Villigen, Switzerland
Search for other works by this author on:
P. Coray
Solar Technology Laboratory,
Paul Scherrer Institute
, 5232 Villigen, Switzerland
W. Lipiński
Department of Mechanical Engineering,
University of Minnesota
, Minneapolis, MN 55455
A. Steinfeld
Department of Mechanical and Process Engineering,
ETH Zurich
, 8092 Zurich, Switzerland; and Solar Technology Laboratory, Paul Scherrer Institute
, 5232 Villigen, Switzerlande-mail: aldo.steinfeld@ethz.ch
J. Heat Transfer. Jan 2010, 132(1): 012701 (6 pages)
Published Online: October 23, 2009
Article history
Received:
June 2, 2008
Revised:
May 20, 2009
Published:
October 23, 2009
Citation
Coray, P., Lipiński, W., and Steinfeld, A. (October 23, 2009). "Experimental and Numerical Determination of Thermal Radiative Properties of ZnO Particulate Media." ASME. J. Heat Transfer. January 2010; 132(1): 012701. https://doi.org/10.1115/1.3194763
Download citation file:
Get Email Alerts
Cited By
On Prof. Roop Mahajan's 80th Birthday
J. Heat Mass Transfer
Thermal Hydraulic Performance and Characteristics of a Microchannel Heat Exchanger: Experimental and Numerical Investigations
J. Heat Mass Transfer (February 2025)
Related Articles
Tomography-Based Analysis of Radiative Transfer in Reacting Packed Beds Undergoing a Solid-Gas Thermochemical Transformation
J. Heat Transfer (June,2010)
Effect of Morphology on Spectral Radiative Properties of Three-Dimensionally Ordered Macroporous Ceria Packed Bed
J. Heat Transfer (December,2013)
Backward Monte Carlo Simulations in Radiative Heat Transfer
J. Heat Transfer (February,2003)
Fixed Grid Simulation of Radiation-Conduction Dominated Solidification Process
J. Heat Transfer (February,2010)
Related Proceedings Papers
Related Chapters
The MCRT Method for Participating Media
The Monte Carlo Ray-Trace Method in Radiation Heat Transfer and Applied Optics
Short-Pulse Collimated Radiation in a Participating Medium Bounded by Diffusely Reflecting Boundaries
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Our Sun and Thermal Radiation Distribution Function
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life