Study of EU DEMO WCLL breeding blanket and primary heat transfer system integration

Martelli, Emanuela; Giannetti, Fabio; Caruso, Gianfranco; Tarallo, Andrea; Polidori, Massimiliano; Barucca, L.; Nevo, Alessandro Del

doi:10.1016/j.fusengdes.2018.04.016

Cited by 46 publications

(59 citation statements)

References 12 publications

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“…KDII/5-Considerations related to the characteristics of the BoP play an important role in the design and the licencing of the DEMO plant. Emphasis at this early design phase has been on a few important aspects of BoP, par ticularly the PHTS [31,32] and the relevant power conversion system (PCS) [33] because of their technical complexity and strong impact on design integration, maintenance and safety [34]. The pulsed operation foreseen for DEMO is particularly demanding for the plant electrical system (PES), BoP and PCS.…”

Section: Key Design Integration Issuesmentioning

confidence: 99%

Overview of the DEMO staged design approach in Europe

Federici¹,

Bachmann²,

et al. 2019

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This paper describes the status of the pre-conceptual design activities in Europe to advance the technical basis of the design of a DEMOnstration Fusion Power Plant (DEMO) to come in operation around the middle of this century with the main aims of demonstrating the production of few hundred MWs of net electricity, the feasibility of operation with a closedtritium fuel cycle, and maintenance systems capable of achieving adequate plant availability. This is expected to benefit as much as possible from the ITER experience, in terms of design, licensing, and construction. Emphasis is on an integrated design approach, based on system engineering, which provides a clear path for urgent R&D and addresses the main design integration issues by taking account critical systems interdependencies and inherent uncertainties of important design assumptions (physics and technology). A design readiness evaluation, together with a technology maturation and down selection strategy are planned through structured and transparent Gate Reviews. By embedding industry experience in the design from the beginning it will ensure that early attention is given to technology readiness and industrial feasibility, costs, maintenance, power conversion, nuclear safety and licensing aspects.

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Section: Key Design Integration Issuesmentioning

confidence: 99%

Overview of the DEMO staged design approach in Europe

Federici¹,

Bachmann²,

et al. 2019

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“…The Energy Storage System (ESS) is part of the Intermediate Heat Transfer System (IHTS) designed to feed the PCS releasing steady-state electric power to the electricity grid. The current design of the ESS is constituted by two different tanks filled in with molten salt and connected by a pipeline in which molten salt flows in two directions depending on the operating phase of the reactor [4]. During the pulse phase, the molten salt is moved from the cold tank to the hot tank after heat exchange with the cooling water conveyed from the FW PHTS.…”

Section: Energy Storage System Configurationmentioning

confidence: 99%

“…To provide a continuous power generation, an Intermediate Heat Transfer System (IHTS) is foreseen. This solution in the design of DEMO fusion reactor and the related Balance of Plant (BOP) has led to a configuration of the IHTS constituted by the secondary sides of Intermediate Heat Exchangers (IHX) and the Energy Storage System (ESS) consisting of two molten salt tanks operating at different temperatures [4]. An alternative option, here compared with the molten salt ESS, is represented by a natural gas (methane) fired boiler specially designed to generate the superheated steam conveyed to highand low-pressure steam turbines.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Exergy Analysis of the EU DEMO Fusion Reactor

Palazzo¹,

Giannetti²,

Caruso³

2019

IJES

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Purpose of the present study is the exergy analysis of EU DEMO pulsed fusion power plant considering the Primary Heat Transfer Systems, the Intermediate Heat Transfer System (IHTS) including the Energy Storage System (ESS) as a first option to ensure the continuity of electric power released to the grid. A second option here considered is a methane fired auxiliary boiler replacing the ESS. The Power Conversion System (PCS) performance is evaluated as well in the overall balance. The performance analysis is based on the exergy method to specifically assess the amount of exergy destruction determined by irreversible phenomena along the whole cyclic process. The pulse and dwell phases of the reactor operation are evaluated considering the state of the art of the ESS adopting molten salts alternate heating and storage in a hot tank followed by a cooling and recovery of molten salt in a cold tank to ensure the continuity of power release to the electrical grid. The second option of the plant configuration is evaluated on the basis of an auxiliary boiler replacing the ESS with a 10% of the power produced by the reactor during both pulse and dwell modes.

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“…On the basis of the secondary circuit layout and the HERO SGBT geometry, a numerical post-test analysis was performed using two versions of the RELAP5 code: the RELAP5-3D © Ver. 4.3.4 [17] and a modified version of the RELAP5/Mod3.3 [18,19], which includes heavy liquid metals as working fluids. The numerical outcomes were compared with the experimental results in order to assess the code capability in predicting thermal-hydraulic performances of the component and to study the heat transfer in liquid metal, supporting the code validation process for fusion applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on CIRCE-HERO for the EU DEMO PbLi/Water Heat Exchanger Development

et al. 2021

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The present paper describes the experimental campaign executed at the ENEA Brasimone Research Centre aiming at supporting the development of a PbLi/water heat exchanger suitable for the lithium–lead loops of the dual coolant lithium lead and the water cooled lithium lead breeding blankets of the EU DEMO fusion reactor. The experiments were performed in a test section named HERO, installed inside the main vessel of the lead–bismuth eutectic-cooled pool-type facility CIRCE. The test section hosts a steam generator bayonet tube mock-up in relevant scale, which was selected as a promising configuration for DEMO purposes. For the thermal-hydraulic characterization of the component, five tests were executed at different water pressures (6, 8, 12 MPa, two tests at 10 MPa), and liquid metal flow rates (40, 33, 27, 20, 10 kg/s). The experimental outcomes proved the technological feasibility of this novel steam generator and its suitability for the DEMO PbLi loops. The activity was completed with a post-test analysis using two versions of the system code RELAP5. Because the experiments were executed with lead–bismuth eutectic, a scaling analysis is proposed to find the equivalence with PbLi. RELAP5 code was applied to recalculate the experimental data using PbLi as working fluid.

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Study of EU DEMO WCLL breeding blanket and primary heat transfer system integration

Cited by 46 publications

References 12 publications

Overview of the DEMO staged design approach in Europe

Overview of the DEMO staged design approach in Europe

A Preliminary Exergy Analysis of the EU DEMO Fusion Reactor

Experimental Investigation on CIRCE-HERO for the EU DEMO PbLi/Water Heat Exchanger Development

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