Multi-dimensional discrete ordinates solutions to combined mode radiation heat transfer problems and their application to a free-falling particle, direct absorption solar receiver
Multi-dimensional radiative transfer in combined mode heat transfer problems was investigated with emphasis on the analysis and characterization of a free-falling particle cloud, direct absorption solar central receiver. A model was developed to calculate the relevant distributions in the curtain while a concentrated solar beam is impinging on the front face of the medium. The discrete ordinated approximation was applied to allow the spectral equation of transfer (EOT) to be modeled as a PDE. Model verification tests were conducted to determine the accuracy of the model. One- and two-dimensional results showed that the discrete ordinates model provides satisfactory estimates of the radiant intensity, the heat flux and the temperature distributions for ordinate sets above S{sub 4} (12-flux approximation) for both the black and gray cases. 75 refs., 69 figs., 13 tabs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5232064
- Report Number(s):
- SAND-89-2294; ON: DE90004987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140702* -- Solar Thermal Power Systems-- Central Receiver
141000 -- Solar Collectors & Concentrators
ADSORPTION
ALGORITHMS
CENTRAL RECEIVERS
CLOUDS
COHERENT SCATTERING
CSP
Concentrating Solar Power
DESIGN
DISTRIBUTION FUNCTIONS
EFFICIENCY
ENERGY CONSERVATION
ENERGY EFFICIENCY
ENERGY TRANSFER
FUNCTIONAL MODELS
FUNCTIONS
HEAT FLUX
HEAT TRANSFER
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MEASURING METHODS
OPTICAL SYSTEMS
PARTICLES
PLANNING
PRECIPITATION
RADIATIONS
RAYLEIGH SCATTERING
RECOMMENDATIONS
RESEARCH PROGRAMS
SCATTERING
SEPARATION PROCESSES
SOLAR RADIATION
SOLAR RECEIVERS
SORPTION
STELLAR RADIATION
TECHNOLOGY ASSESSMENT
THERMODYNAMICS