Abstract
The Permeator Against Vacuum (PAV) has been conceived as the simplest, cost effective and reliable technology system dedicated to tritium extraction from breeding liquid metals.An optimal design of a PAV requires a detailed hydraulic design optimization for established operational ranges (HCLL at low velocities of ∼1mm/s or DCLL in the ranges of tens of cm/s). The present work analyses the PAV extraction efficiency dependency on the design parameters as optimum on-line Tritium Extraction System (TES). Three different models have been built for that purpose: one through physically refined 1D tritium transport computation using TMAP7 (unique simulation tool with QA for ITER); and two further detailed models on 2D/3D FEM tool (COMSOL Multi-physics 4.0). The geometry used in this work is a simplification of Fuskite® conceptual design developed at CIEMAT, consisting of a set of cylindrical and concentric α-Fe double membranes enclosing a vacuumed space and in contact with in-pipe flowing LiPb eutectic.The aim of this paper is to give the first steps to establish the optimal design parameters of a PAV and evaluate the state-of-the-art of these models.
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