L

FIGURE 2.12 Isothermal flash

Combining and rearranging:

The only variable that is unknown in this equation is the (V/F) ratio since the P/s are functions of temperature only. Therefore, another iterative, trial-and-error solution is required. One guesses a (V/F) and sees whether equation (2.13) is satisfied. The left-hand side of equation (2.13) is a nonmonotonic function (see Figure 2.13). A value of zero for (V/F) always satisfies the

CORRECT V/F (FOR GIVEN Ç, T. Zj)

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