In R&D for Generation IV reactors, SIRIO tests an innovative decay heat removal system for ALFRED, a Lead-Cooled Fast Reactor. Given the high freezing point of ALFRED coolant (327°C), its DHR must balance passive decay heat removal with maintaining the lead above its freezing temperature. The self-regulating DHR operation is based on the degradation of condensation efficiency with non-condensable gases. This paper details a new re-scaling using the "power-to-volume" approach on ALFRED's revised design. It also describes SIRIO's numerical model developed with RELAP5/Mod3.3 and presents simulation results, comparing them with full-scale system to verify the predicted consistency and the fidelity of the scaling.
Re-scaling and Pre-test Analysis of SIRIO facility / Khalil Youssef, G.; Del Moro, T.; Caramello, M.; Tarantino, M.; Giannetti, F.. - (2024). (Intervento presentato al convegno 41th UIT International Heat Transfer Conference tenutosi a Napoli; Italy).
Re-scaling and Pre-test Analysis of SIRIO facility
G. Khalil Youssef
Primo
;T. Del MoroSecondo
;F. GiannettiUltimo
2024
Abstract
In R&D for Generation IV reactors, SIRIO tests an innovative decay heat removal system for ALFRED, a Lead-Cooled Fast Reactor. Given the high freezing point of ALFRED coolant (327°C), its DHR must balance passive decay heat removal with maintaining the lead above its freezing temperature. The self-regulating DHR operation is based on the degradation of condensation efficiency with non-condensable gases. This paper details a new re-scaling using the "power-to-volume" approach on ALFRED's revised design. It also describes SIRIO's numerical model developed with RELAP5/Mod3.3 and presents simulation results, comparing them with full-scale system to verify the predicted consistency and the fidelity of the scaling.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
