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Study of the EU-DEMO WCLL Breeding Blanket Primary Cooling Circuits Thermal-Hydraulic Performances during Transients Belonging to LOFA Category

Author

Listed:
  • Cristiano Ciurluini

    (Dipartimento di Ingegneria Astronautica, Elettrica ed Energetica, Sapienza University of Rome, 00186 Rome, Italy)

  • Fabio Giannetti

    (Dipartimento di Ingegneria Astronautica, Elettrica ed Energetica, Sapienza University of Rome, 00186 Rome, Italy)

  • Alessandro Del Nevo

    (ENEA FSN-ING-SIS, ENEA CR Brasimone, Località Brasimone, 40032 Camugnano, Italy)

  • Gianfranco Caruso

    (Dipartimento di Ingegneria Astronautica, Elettrica ed Energetica, Sapienza University of Rome, 00186 Rome, Italy)

Abstract

The Breeding Blanket (BB) is one of the key components of the European Demonstration (EU-DEMO) fusion reactor. Its main subsystems, the Breeder Zone (BZ) and the First Wall (FW), are cooled by two independent cooling circuits, called Primary Heat Transfer Systems (PHTS). Evaluating the BB PHTS performances in anticipated transient and accident conditions is a relevant issue for the design of these cooling systems. Within the framework of the EUROfusion Work Package Breeding Blanket, it was performed a thermal-hydraulic analysis of the PHTS during transient conditions belonging to the category of “Decrease in Coolant System Flow Rate”, by using Reactor Excursion Leak Analysis Program (RELAP5) Mod3.3. The BB, the PHTS circuits, the BZ Once Through Steam Generators and the FW Heat Exchangers were included in the study. Selected transients consist in partial and complete Loss of Flow Accident (LOFA) involving either the BZ or the FW PHTS Main Coolant Pumps (MCPs). The influence of the loss of off-site power, combined with the accident occurrence, was also investigated. The transient analysis was performed with the aim of design improvement. The current practice of a standard Pressurized Water Reactor (PWR) was adopted to propose and study actuation logics related to each accidental scenario. The appropriateness of the current PHTS design was demonstrated by simulation outcomes.

Suggested Citation

  • Cristiano Ciurluini & Fabio Giannetti & Alessandro Del Nevo & Gianfranco Caruso, 2021. "Study of the EU-DEMO WCLL Breeding Blanket Primary Cooling Circuits Thermal-Hydraulic Performances during Transients Belonging to LOFA Category," Energies, MDPI, vol. 14(6), pages 1-33, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1541-:d:514839
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    Citations

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    Cited by:

    1. Pietro Arena & Gaetano Bongiovì & Ilenia Catanzaro & Cristiano Ciurluini & Aldo Collaku & Alessandro Del Nevo & Pietro Alessandro Di Maio & Matteo D’Onorio & Fabio Giannetti & Vito Imbriani & Pietro M, 2023. "Design and Integration of the EU-DEMO Water-Cooled Lead Lithium Breeding Blanket," Energies, MDPI, vol. 16(4), pages 1-27, February.
    2. Vincenzo Narcisi & Cristiano Ciurluini & Giovanni Padula & Fabio Giannetti, 2022. "Analysis of EU-DEMO WCLL Power Conversion System in Two Relevant Balance of Plant Configurations: Direct Coupling with Auxiliary Boiler and Indirect Coupling," Sustainability, MDPI, vol. 14(10), pages 1-20, May.

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