Example 2.1:
Why "Lever" Rule?
If EV, LE, are the distances between points (L, E) and (E, V) respectively (Fig. 2-3), show that the liquid and vapor fractions corresponding to point E satisfy the relationship
xV (VE) = xL (LE),
where VE and LE are the distances between points V, E, and L, E, respectively.
Example 2.2:
Antoine Equation for Water
The NIST databases give the Antoine equation of water in the form with pressure in bar and temperature in K. The constants for water are
The first set is valid in the temperature range 344 K to 373 K and the second in the range 379 K to 573 K. Calculate
(a) the saturation pressure at 100 °C and
(b) the boiling temperature at 5 bar.