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Water-Hydrogen Isotope Exchange Process Analysis

O. Fedorchenko, I. Alekseev, V. Uborsky

Fusion Science and Technology

Volume 54 / Number 2 / August 2008 / Pages 450-453


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The use of a numerical method is needed to find a solution to the equation system describing a general case of heterogeneous isotope exchange between gaseous hydrogen and liquid water in a column. A computer model of the column merely outputting the isotope compositions in the flows leaving the column, like the experimental column itself, is a "black box" to a certain extent: the solution is not transparent and occasionally not fully comprehended. The approximate analytical solution was derived from the ZXY-diagram (McCabe-Thiele diagram), which illustrates the solution of the renewed computer model called "EVIO-4.2" Several "unusual" results and dependences have been analyzed and explained.

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