After decades of operation in nuclear power plants, Once-Through Steam Generators (OTSGs) were recently proposed for nuclear fusion applications. In particular, they are supposed to be installed in the primary cooling systems of the European Union Demonstration fusion power plant (EU-DEMO). One of the key reactor components is the Breeding blanket (BB). Among the BB concepts that are currently under study, Water-Cooled Lithium-Lead (WCLL) option was considered for this work. The WCLL blanket is divided in two main subsystems, the breeder zone (BZ) and the first wall (FW), each one provided with an independent cooling circuit, named Primary Heat Transfer System (PHTS). Thermal power removed from BB by BZ and FW PHTS is driven to the Power Conversion System (PCS) to be converted into electricity. The thermal coupling is ensured by two OTSGs per system. At the Department of Astronautical, Electrical and Energy Engineering (DIAEE) of Sapienza University of Rome, a simulation activity was carried out to understand the component thermal-hydraulic behavior during DEMO normal operations. For calculation purposes, a full model of the steam generator was prepared by using a modified version of RELAP5/MOD3.3 system code. The computational activity performed allows to preliminary characterize the OTSG thermal-hydraulic performances during both pulse and dwell phases.

Evaluation of the thermal-hydraulic performances of a once-through steam generator in nuclear fusion applications / Galli, F.; Ciurluini, C.; Narcisi, V.; Giannetti, F.; Caruso, G.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 2177:1(2022), pp. 1-11. (Intervento presentato al convegno 38th UIT Heat transfer international conference 2021, UIT 2021 tenutosi a Gaeta; Italy (online)) [10.1088/1742-6596/2177/1/012017].

Evaluation of the thermal-hydraulic performances of a once-through steam generator in nuclear fusion applications

Ciurluini C.
Secondo
;
Narcisi V.;Giannetti F.
Penultimo
;
Caruso G.
Ultimo
2022

Abstract

After decades of operation in nuclear power plants, Once-Through Steam Generators (OTSGs) were recently proposed for nuclear fusion applications. In particular, they are supposed to be installed in the primary cooling systems of the European Union Demonstration fusion power plant (EU-DEMO). One of the key reactor components is the Breeding blanket (BB). Among the BB concepts that are currently under study, Water-Cooled Lithium-Lead (WCLL) option was considered for this work. The WCLL blanket is divided in two main subsystems, the breeder zone (BZ) and the first wall (FW), each one provided with an independent cooling circuit, named Primary Heat Transfer System (PHTS). Thermal power removed from BB by BZ and FW PHTS is driven to the Power Conversion System (PCS) to be converted into electricity. The thermal coupling is ensured by two OTSGs per system. At the Department of Astronautical, Electrical and Energy Engineering (DIAEE) of Sapienza University of Rome, a simulation activity was carried out to understand the component thermal-hydraulic behavior during DEMO normal operations. For calculation purposes, a full model of the steam generator was prepared by using a modified version of RELAP5/MOD3.3 system code. The computational activity performed allows to preliminary characterize the OTSG thermal-hydraulic performances during both pulse and dwell phases.
2022
38th UIT Heat transfer international conference 2021, UIT 2021
Balance of Pkwd>DEMO; heat transfer system; primarlant; pulse/dwell transition; RELAP5
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Evaluation of the thermal-hydraulic performances of a once-through steam generator in nuclear fusion applications / Galli, F.; Ciurluini, C.; Narcisi, V.; Giannetti, F.; Caruso, G.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 2177:1(2022), pp. 1-11. (Intervento presentato al convegno 38th UIT Heat transfer international conference 2021, UIT 2021 tenutosi a Gaeta; Italy (online)) [10.1088/1742-6596/2177/1/012017].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1647362
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