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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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6.5 Energy Balances in Matrix Form

After convergence of the temperature loop, the liquid and vapor flow rates, Lj and Vj, can be corrected using energy balances (see Figure 6-1). For the general stage shown in Figure 6-3, the energy balance is

Image

(6-20)

This equation is for 2 ≤ j ≤ N − 1. The liquid flow rates can be substituted in from a mass balance around the top of the column:

Image

(6-21a)

Image

(6-21b)

where 2 ≤ j ≤ N − 1.

Substituting Eqs. (6-21a) and ...

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