Dew-Point Pressure (TGiven). Calculate pressure directly from equation (2.9)
These calculations combine vapor-liquid equilibrium relationships with total mass and component balances. Material of known composition z; is fed into a flash drum at a known rate of F mols/min. Both the temperature and the pressure in the drum are given. Variables that are unknown are liquid and vapor compositions and liquid and vapor flow rates. See Figure 2.12.
The equations describing the system are:
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