Potential application of Rankine and He-Brayton cycles to sodium fast reactors
Fecha
01/08/2011Autor
Estado
info:eu-repo/semantics/publishedVersionMetadatos
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. Traditionally all the demos and/or prototypes of the sodium fast reactor (SFR) technology with power
output, have used a steam sub-critical Rankine cycle. Sustainability requirement of Gen. IV reactors
recommends exploring alternate power cycle configurations capable of reaching high thermal efficiency.
By adopting the anticipated working parameters of next SFRs, this paper investigates the potential
of some Rankine and He-Brayton layouts to reach thermal efficiencies as high as feasible, so that they
could become alternates for SFR reactor balance of plant. The assessment has encompassed from subcritical
to super-critical Rankine cycles and combined cycles based on He-Brayton gas cycles of different
complexity coupled to Organic Rankine Cycles. The sub-critical Rankine configuration reached at thermal
efficiency higher than 43%, which has been shown to be a superior performance than any of the He-
Brayton configurations analyzed. By adopting a super-critical Rankine arrangement, thermal efficiency
would increase less than 1.5%. In short, according to the present study a sub-critical layout seems to be
the most promising configuration for all those upcoming prototypes to be operated in the short term
(10 15 years). The potential of super-critical CO2-Brayton cycles should be explored for future SFRs to
be deployed in a longer run.
Potential application of Rankine and He-Brayton cycles to sodium fast reactors
Tipo de Actividad
Artículos en revistasISSN
0029-5493Palabras Clave
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