13.8. DERIVATION OF FINITE-DIFFERENCE NUMERICAL METHOD FOR ASYMMETRIC MEMBRANES
13.8A. Countercurrent Flow
The flow diagram for the numerical method is shown in Fig. 13.8-1. Using the method derived by McCabe et al. (M5) and taking an area ΔAm, the mass balances on both streams can be written as
Figure 13.8-1. Flow diagram for countercurrent flow with asymmetric membrane using finite difference method.
The value of can be calculated from Eq. (13.7-27) using xin for x and for y'. Also, can be calculated ...