Speaker
Emanuela Martelli
(DIAEE)
Description
Within the framework of EUROfusion Power Plant Physics & Technology Work Programme, the Water Cooled Lithium Lead (WCLL) is one of the four breeding blanket (BB) concepts considered as possible candidate for the realization of DEMO fusion power plant. ENEA CR Brasimone has developed during 2015 a new design of the outboard module based on horizontal (i.e radial-toroidal) water cooling tubes in the Breeding Zone (BZ), and on PbLi flowing in radial-poloidal direction. Radial-toroidal and radial-poloidal stiffening plates define the PbLi flow pattern; a gap between the Back Plate (BP) and the BZ constitutes the PbLi inlet manifold. Orifices in the radial-poloidal stiffening plates and in the plate facing the BZ ensures the PbLi distribution in the BZ.
A conceptual design of the new WCLL BB has been analyzed to investigate the behaviour of PbLi in the manifold region and to optimize the mass flow rate distribution in the BZ of the module. Different geometries have been analyzed, considering orifices of different dimensions. The optimal solution is a compromise between the need to have slow PbLi velocity, to limit Eurofer corrosion, and to preserve the structural capability of the stiffening plates to withstand the overpressure conditions. The results of the analytical solution are analyzed by a detailed three-dimensional CFD analysis using ANSYS CFX-15 code.
Co-authors
Alessandro Del Nevo
(ENEA FSN-ING-PAN, ENEA CR Brasimone, Località Brasimone, 40032, Camugnano (BO), Italy)
Andrea Giovinazzi
(DICI, University of Pisa, Largo Lucio Lazzarino 2, 56122, Pisa, Italy)
Emanuela Martelli
(DIAEE, Sapienza University of Rome, Corso Vittorio Emanuele II, 244, 00186, Roma, Italy)
Fabio Giannetti
(DIAEE, Sapienza University of Rome, Corso Vittorio Emanuele II, 244, 00186, Roma, Italy)
Gianfranco Caruso
(DIAEE, Sapienza University of Rome, Corso Vittorio Emanuele II, 244, 00186, Roma, Italy)
