Optimum design of inclined Frazier-scheme thermal diffusion columns for enriching heavy water

Equations which give the minimum column length and the optimum inclination angle for enriching heavy water in thermal diffusion columns arranged in th e Frazier scheme are derived. Considerable savings in fixed and operating c harges result if columns are placed at the optimum angle instead of being p laced vertically. The savings are particularly significant for lower produc tion rate operations or cases in which a significant number of columns are used. (C) 1999 Elsevier Science B.V. All rights reserved.