This report, carried out at the DIMNP of the University of Pisa in collaboration with ENEA Brasirnone Research Centre, illustrates the thermal fluid-dynamics results of the WA-DHR pre-test analysis. In fact, a WA-DHR heat exchanger bayonet tube will be installed into the ICE test section of CIRCE facility to study decay heat removal from the core of a LFR in case of an accidental event with total loss of the secondary circuit and consequent reactor scram. The thermal-hydraulic behavior of the WA-DHR heat exchanger inside the CIRCE facility was studied by the CFD Ansys FLUENT code, adopting an axial-symmetric domain. Pre-test calculations were performed to investigate the natural circulation heat transfer in heavy liquid metal pool and the cooling capacity of air circulating in the secondary side of the DHR. In steady state conditions the DHR inside ICE is able to remove 40 kW heat power, which represents 5% of the nominal power, thanks to thermal stratification phenomena that in this condition is foreseen inside the downcomer region of the ICE test-section.

Thermal-hydraulic pre-test analysis of ICE test section with WA-DHR

Oriolo, F.;Martelli, D.;De Rosa, M.
2011-09-13

Abstract

This report, carried out at the DIMNP of the University of Pisa in collaboration with ENEA Brasirnone Research Centre, illustrates the thermal fluid-dynamics results of the WA-DHR pre-test analysis. In fact, a WA-DHR heat exchanger bayonet tube will be installed into the ICE test section of CIRCE facility to study decay heat removal from the core of a LFR in case of an accidental event with total loss of the secondary circuit and consequent reactor scram. The thermal-hydraulic behavior of the WA-DHR heat exchanger inside the CIRCE facility was studied by the CFD Ansys FLUENT code, adopting an axial-symmetric domain. Pre-test calculations were performed to investigate the natural circulation heat transfer in heavy liquid metal pool and the cooling capacity of air circulating in the secondary side of the DHR. In steady state conditions the DHR inside ICE is able to remove 40 kW heat power, which represents 5% of the nominal power, thanks to thermal stratification phenomena that in this condition is foreseen inside the downcomer region of the ICE test-section.
Rapporto tecnico
File in questo prodotto:
File Dimensione Formato  
XCIRTEN-LP3-008.pdf

accesso aperto

Licenza: Creative commons
Dimensione 1.37 MB
Formato Adobe PDF
1.37 MB Adobe PDF Visualizza/Apri
RdS-2011-047 Frontespizio.pdf.pdf

accesso aperto

Licenza: Creative commons
Dimensione 44.48 kB
Formato Adobe PDF
44.48 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/7267
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact