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Temperature-dependent spectral emittance of bauxite and silica particle beds

Journal Article · · Experimental Heat Transfer
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Georgia Institute of Technology, Atlanta, GA (United States); Georgia Institute of Technology
  2. Georgia Institute of Technology, Atlanta, GA (United States)
Bauxite and silica particles are candidate materials for solar thermal energy storage at high temperatures. The temperature-dependent emittance of packed beds with bauxite and silica particles was measured using a newly upgraded emissometer at wavelengths 2 μm ≤ λ ≤ 16 μm and temperatures up to ~730 K. The room-temperature emittance was obtained from the measured directional-hemispherical reflectance. A fused silica disc was used to test the emissometer by comparing the measured spectral emittance with the calculated emittance from a fitted Lorentz oscillator model. For the polycrystalline silica particles and the fused silica disc, the measured emittance increases with temperature in the mid-infrared region. The underlying mechanism is interpreted as the temperature-dependent damping coefficient in the Lorentz oscillator model. Two types of bauxite particles with different compositions and sizes were investigated. For λ > 10 μm, the measured emittance at elevated temperatures is higher than that at room temperature. In the region 2 μm < λ < 6 μm, the temperature dependence varies for different types of particles. The total emittance of bauxite particle beds was calculated by spectral integration using Planck’s distribution at the prescribed temperature. As a result, the calculated total emittance is between 0.89 and 0.96, but it does not change monotonically with temperature.
Research Organization:
Georgia Institute of Technology, Atlanta, GA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0008372
OSTI ID:
2337439
Alternate ID(s):
OSTI ID: 1979205
Journal Information:
Experimental Heat Transfer, Journal Name: Experimental Heat Transfer Journal Issue: 6 Vol. 36; ISSN 0891-6152
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English

References (52)

Theoretical and experimental study of radiant heat transfer in a solar fluidized-bed receiver journal July 1982
Estimation of a radiative property of scattering and absorbing media journal March 1997
Temperature-Resolved Infrared Spectral Emissivity of SiC and Pt–10Rh for Temperatures up to 900°C journal May 2007
Radiative Properties of Ceramic $$\hbox {Al}_{2}\hbox {O}_{3}$$, AlN, and $$\hbox {Si}_{3}\hbox {N}_{4}$$: I. Experiments journal May 2016
Spectral Radiative Properties of Ceramic Particles for Concentrated Solar Thermal Energy Storage Applications journal September 2020
Spectral emittance measurements of micro/nanostructures in energy conversion: a review journal August 2020
Forward and inverse analysis of single and multiple scattering of collimated radiation in an axisymmetric system journal March 1991
Radiation-extinction coefficients of packed-sphere systems journal February 1991
Optical properties of solid particle receiver materials journal November 1986
Optical properties of solid particle receiver materials journal November 1986
A review of high-temperature particle receivers for concentrating solar power journal October 2016
Progress in heat transfer research for high-temperature solar thermal applications journal February 2021
Thermal performance analysis of free-falling solar particle receiver and heat transfer modelling of multiple particles journal March 2021
Physical Properties of Solid Particle Thermal Energy Storage Media for Concentrating Solar Power Applications journal January 2014
Probing high temperature thermal emissive properties of energy materials and coatings with emission spectroscopy augmented by in situ reflection journal August 2020
Optical and radiative characterisation of alumina–silica based ceramic materials for high-temperature solar thermal applications journal September 2021
Measurements of scattering and absorption properties of submillimeter bauxite and silica particles journal December 2021
State of the art on high temperature thermal energy storage for power generation. Part 1—Concepts, materials and modellization journal January 2010
Assessment and improvement of optical properties of particles for solid particle receiver journal March 2020
Measurement of flow properties coupled to experimental and numerical analyses of dense, granular flows for solar thermal energy storage journal September 2020
Emissivity and absorption function measurements of Al2O3 and SiC particles at elevated temperature for the utilization in concentrated solar receivers journal September 2020
Modeling heat exchangers with an open source DEM-based code for granular flows journal November 2021
First spectral emissivity study of a solar selective coating in the 150–600°C temperature range journal October 2013
Properties of granular materials as heat transfer and storage medium in CSP application journal December 2015
Measurement and analysis of thermal conductivity of ceramic particle beds for solar thermal energy storage journal September 2021
Thermal infrared directional emissivity of powdered quartz journal December 1995
Optical constants of refractory oxides at high temperatures: Mid-infrared properties of corundum, spinel, and journal May 2013
A spectroscopic method to measure the spectral emissivity of semi-transparent materials up to high temperature journal October 1999
New experimental device for infrared spectral directional emissivity measurements in a controlled environment journal November 2006
Extraordinary optical transmission through subwavelength holes in a polaritonic silicon dioxide film journal April 2007
Experimental Determination of the Radiative Properties of Particle Suspensions for High-Temperature Solar Receiver Applications journal September 2013
Spectroscopic Goniometry System for Determining Thermal Radiative Properties of Participating Media journal September 2011
Temperature measurement using infrared thermometry within semi-transparent media journal December 2018
Temperature dependence of transverse and longitudinal optic modes in the α and β phases of quartz journal May 1975
Directional Spectral Emittance of a Packed Bed: Correlation Between Theoretical Prediction and Experimental Data journal July 2000
Directional Spectral Emittance of a Packed Bed: Influence of the Temperature Gradient in the Medium journal September 2002
Nonisothermal Nongray Absorbing-Emitting-Scattering Suspension of Fe3O4 Particles Under Concentrated Solar Irradiation journal May 1995
Correlation of Measured and Computed Radiation Intensity Exiting a Packed Bed journal February 1996
Thermal Radiation in Packed and Fluidized Beds journal November 1988
Gas-Particle Flow Within a High Temperature Solar Cavity Receiver Including Radiation Heat Transfer journal May 1987
Infrared Radiative Properties of Heavily Doped Silicon at Room Temperature journal November 2009
Development and Evaluation of a Prototype Solid Particle Receiver: On-Sun Testing and Model Validation journal January 2010
Direct Measurement of Thermal Emission From a Fabry–Perot Cavity Resonator journal May 2012
Effect of Morphology on Spectral Radiative Properties of Three-Dimensionally Ordered Macroporous Ceria Packed Bed journal October 2013
Fluidized Bed Technology for Concentrating Solar Power With Thermal Energy Storage journal May 2014
The Development of Direct Absorption and Storage Media for Falling Particle Solar Central Receivers journal August 2015
Granular Flow and Heat-Transfer Study in a Near-Blackbody Enclosed Particle Receiver journal July 2015
Radiation Absorption in a Particle Curtain Exposed to Direct High-Flux Solar Irradiation journal June 2018
On-Sun Performance Evaluation of Alternative High-Temperature Falling Particle Receiver Designs journal September 2018
Optical Properties of Select Particulates After High-Temperature Exposure
  • Roop, Jonathan; Jeter, Sheldon; Abdel-Khalik, Said I.
  • Volume 1: Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power, Solar Thermochemistry and Thermal Energy Storage; Geothermal, Ocean, and Emerging Energy Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Photovoltaics; Wind Energy Systems and Technologies https://doi.org/10.1115/ES2014-6504
conference June 2014
Optical constants of silica glass from extreme ultraviolet to far infrared at near room temperature journal January 2007
Spectral Radiative Properties of Polydispersed SiO2 Particle Beds journal October 2022

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