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Title of article :
Effects of solid fission products forming dissolved oxide (Nd) and metallic precipitate (Ru) on the thermal conductivity of uranium base oxide fuel
Author/Authors :
Dong-Joo Kim، نويسنده , , Jae-Ho Yang، نويسنده , , Jong-Hun Kim، نويسنده , , Young-Woo Rhee، نويسنده , , Ki-Won Kang، نويسنده , , Keon Sik Kim، نويسنده , , Kun-Woo Song، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2007
Pages :
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Abstract :
The effects of solid fission products on the thermal conductivity of uranium base oxide nuclear fuel were experimentally investigated. Neodymium (Nd) and ruthenium (Ru) were added to represent the physical states of solid fission products such as ‘dissolved oxide’ and ‘metallic precipitate’, respectively. Thermal conductivity was determined on the basis of the thermal diffusivity, density and specific heat values. The effects of the additives on the thermal conductivity were quantified in the form of the thermal resistivity equation – the reciprocal of the phonon conduction equation – which was determined from the measured data. It is concluded that the thermal conductivity of the irradiated nuclear fuel is affected by both the ‘dissolved oxide’ and the ‘metallic precipitate’, however, the effects are in the opposite direction and the ‘dissolved oxide’ influences the thermal conductivity more significantly than that of the ‘metallic precipitate’.
Keywords :
Solid fission product , Thermal conductivity , Uranium oxide
Journal title :
Thermochimica Acta
Link To Document :