Structural verification and manufacturing procedures of the cooling system, for DEMO divertor target (OVT)

Mazzone, G.; You, J. H.; Cerri, V.; Coccorese, D.; Garitta, S.; Gironimo, Giuseppe Di; Marzullo, D.; Maio, P.A. Di; Vallone, E.; Tincani, A.; Bonavolontà, U.; Imbriani, Vito

doi:10.1016/j.fusengdes.2019.02.139

Cited by 6 publications

(10 citation statements)

References 8 publications

(8 reference statements)

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Section: Experimental Test Campaignmentioning

confidence: 99%

“…In 2020, after the partial upgrade of the experimental hall at ENEA Brasimone laboratories, the complete design and realization of a new test section data and acquisition system and the installation of the OVT mock-up, the experimental test campaign was started by means of the CEF1 water loop, according to the test matrix drafted in [6]. The CEF1 water loop consists of a heat exchanger and two centrifugal pumps, which can be operated in series or in parallel, the test section, and the return line to the pressurized tank [6], as shown in Figure 2. The OVT mock-up main components are the plasma facing channels, consisting of 39 tubes in CuCrZr equipped with internal helical swirl tape made of copper, the inlet/outlet manifolds made of AISI-316L steel, the inlet diffuser made of AISI-316L, the outlet header made of AISI-316L, the transition CuCrZr/AISI-316L tubes, i.e., the connection between the CuCrZr plasma facing tubes and AISI-316L manifolds/diffuser, and the supporting system [6].…”

Section: Experimental Test Campaignmentioning

confidence: 99%

“…The CEF1 water loop consists of a heat exchanger and two centrifugal pumps, which can be operated in series or in parallel, the test section, and the return line to the pressurized tank [6], as shown in Figure 2. The OVT mock-up main components are the plasma facing channels, consisting of 39 tubes in CuCrZr equipped with internal helical swirl tape made of copper, the inlet/outlet manifolds made of AISI-316L steel, the inlet diffuser made of AISI-316L, the outlet header made of AISI-316L, the transition CuCrZr/AISI-316L tubes, i.e., the connection between the CuCrZr plasma facing tubes and AISI-316L manifolds/diffuser, and the supporting system [6]. Figure 3 shows the CAD model of OVT mock-up and its main components.…”

Section: Experimental Test Campaignmentioning

confidence: 99%

“…Figure 1 shows the model of the entire divertor assembly. Given this background, in the frame of the activities of the DEMO work package DIV-1 "Divertor Cassette Design and Integration", of the EUROfusion program aimed at developing a holistic divertor design concept [5], a mock-up of the OVT [6] of the DEMO divertor was built by the ENEA research group, mainly in order to: In this context, a research campaign was jointly carried out by the University of Palermo and ENEA to experimentally and theoretically assess the hydraulic performances of the OVT mock-up, paying particular attention to the coolant distribution among the PFUs and the total pressure drop across the inlet and outlet sections of the mock-up. Both the experimental and the theoretical-numerical campaigns will be extensively described in the following.…”

Section: Introductionmentioning

confidence: 99%

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Hydraulic Characterization of the Full Scale Mock-Up of the DEMO Divertor Outer Vertical Target

et al. 2021

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In the frame of the pre-conceptual design activities of the DEMO work package DIV-1 “Divertor Cassette Design and Integration” of the EUROfusion program, a mock-up of the divertor outer vertical target (OVT) was built, mainly in order to: (i) demonstrate the technical feasibility of manufacturing procedures; (ii) verify the hydraulic design and its capability to ensure a uniform and proper cooling for the plasma facing units (PFUs) with an acceptable pressure drop; and (iii) experimentally validate the computational fluid-dynamic (CFD) model developed by the University of Palermo. In this context, a research campaign was jointly carried out by the University of Palermo and ENEA to experimentally and theoretically assess the hydraulic performances of the OVT mock-up, paying particular attention to the coolant distribution among the PFUs and the total pressure drop across the inlet and outlet sections of the mock-up. The paper presents the results of the steady-state hydraulic experimental test campaign performed at ENEA Brasimone Research Center as well as the relevant numerical analyses performed at the Department of Engineering at the University of Palermo. The test facility, the experimental apparatus, the test matrix and the experimental results, as well as the theoretical model, its assumptions, and the analyses outcomes are herewith reported and critically discussed.

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Section: Experimental Test Campaignmentioning

confidence: 99%

Section: Experimental Test Campaignmentioning

confidence: 99%

Section: Experimental Test Campaignmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydraulic Characterization of the Full Scale Mock-Up of the DEMO Divertor Outer Vertical Target

et al. 2021

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“…-Maximum water velocity in PFC tubes < 16m/s -CHF margin > 1.4; -Maximum pressure drop < 1.4 MPa; A physical mock-up of the OVT for the verification of the thermo-hydraulic performances has been designed [25] and it is currently under testing.…”

Section: Thermo-hydraulic Analysismentioning

confidence: 99%

Eurofusion-DEMO Divertor - Cassette Design and Integration

Mazzone

You

Bachmann³

et al. 2020

Fusion Engineering and Design

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The Eurofusion-DEMO design will complete the Pre Conceptual Design phase (PCD) with a PCD Gate, named G1, scheduled to take place in Q4 2020 that will focus on assessing the feasibility of the plant and its main components prior to entering into the Conceptual Design phase. In the paper first an overview is given of the Eurofusion-DEMO Divertor Assembly including design and interface description, systems and functional requirements, load specification, system classification, manufacturing procedures and cost estimate. Then critical issues are discussed and potential design solutions are proposed, e.g.: -Neutron material damage limits of the different (structural) materials present in the divertor assembly (as CuCrZr, Eurofer) and in the vacuum vessel (AISI 316L(N)-IG); -Temperature hot spots in parts of the divertor assembly exposed to high nuclear heating and high heat radiation (from the plasma core or the separatrix) causing difficulties for active or passive cooling (e.g. cassette body structure, liner support structures, mechanical supports, divertor toroidal rails); -Arrangement and design of plasma-facing components and liner with pumping slot in the divertor cassette to enable pumping of exhaust gases from the lower port.

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Insulated fixation system of plasma facing components to the divertor cassette in Eurofusion-DEMO

Imbriani

Bonavolontà

Gironimo

et al. 2020

Fusion Engineering and Design

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Structural verification and manufacturing procedures of the cooling system, for DEMO divertor target (OVT)

Cited by 6 publications

References 8 publications

Hydraulic Characterization of the Full Scale Mock-Up of the DEMO Divertor Outer Vertical Target

Hydraulic Characterization of the Full Scale Mock-Up of the DEMO Divertor Outer Vertical Target

Eurofusion-DEMO Divertor - Cassette Design and Integration

Insulated fixation system of plasma facing components to the divertor cassette in Eurofusion-DEMO

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