Influence of Internal Thermal Radiation on Heat Transfer in UO2Fuel Elements
作者:
ViskantaR.,
期刊:
Nuclear Science and Engineering
(Taylor Available online 1965)
卷期:
Volume 21,
issue 1
页码: 13-19
ISSN:0029-5639
年代: 1965
DOI:10.13182/NSE65-A21009
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractHeat transfer in flat-plate UO2fuel elements has been studied theoretically. Particular attention has been focused on internal-radiation heat transfer. Local radiant-heat fluxes have been calculated and the relative importance of radiation compared to conduction has been established. The results show that even at elevated temperatures single crystal UO2is transparent enough, and internal radiation contributes significantly to high-temperature heat transfer. The presence of scattering at the grain boundaries in polycrystalline UO2increases the extinction coefficient considerably. Because of this, radiant heat transfer was found to be unimportant compared to conduction.
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