Fusion Programme - ENEA - Fusione

250Fusion Programmeflow-rate in the heliumcoolant stream. Theproposed CPS is based on athree-stage process:• oxidation of Q 2 and CO toQ 2 O and CO 2 by a fixedbed oxidizer (Cu 2 O-CuO);• removal of Q 2 O and CO 2by a pressure temperatureswing adsorption (PTSA)system operated at roomtemperature in the ad -sorption phase;• removal of impurities byPTSA operated at LN2temperature in theadsorption phase.Figure 3.13 shows theFig. 3.13 - 3D layout of CPS for HCPB-TBMprocess flow diagram and 3Dlayout of the CPS. Accordingto the 3D layout, the spacerequired for the CPS installation is 4.5×1.8×2.8 m 3(L×W×H). The CPS should be located in the tokamakcooling water system (TCWS) vault, close to heliumcoolant stream main compressor or, as analternative, inside the tritium plant building.Both TES and CPS have been designed with aregeneration loop to feed the ITER tritium systemswith tritium only in an elemental form, with anegligible amount of tritiated water.3003.75°44He INHeOUT2301466HeOUT397COLD SHIELDHeOUTHOT SHIELDPb17LiChannelsGrid 15 mm14102007 Progress ReportWork on the dual coolant lithium-lead(DCLL) blanket with vertical modulesegmentation (VMS) of the blanketmodules continued in collaborationwith the University of Thessaly, Greece. With thissetup the modules (both outboard and inboard tothe plasma) are arranged in single poloidalstructures. The studies performed were aimed atDEMOactivitiesFirst Wall5 mm SiCi/SiC FCI with2 mm Pb17Li Gapoptimising the fluid flow in the modules and the magnetohydrodynamic (MHD) issues related to themovement of a conductor (Pb-17Li) in the magnetic field of the tokamak. The DCLL blanket is cooled usingHe flowing in the grids and Pb-17Li flowing in channels in the module (fig. 3.14). To limit MHD effects, thegrid is separated from the flowing Pb-17Li by a SiC/SiC composite insert, keeping a 2-mm gap betweengrid (in steel) and insert. The gap is filled with stagnant Pb-17Li. To keep the temperatures and thermalstresses at an acceptable level, the He flow in the grids has to be separated in two parallel flows in theinboard modules and in three parallel flows in the outboard. This solution requires the use of intermediatetorradFig. 3.14 - DCLL outboard module, equatorialsection50[3.5] C. Nardi and S. Papastergiou, Demo blanket DCLLusing vertical module segmentation, ENEA Internal