![]() ![]() See how to use this calculator for step-by-step guide. Introduction to Chemical Engineering Thermodynamics (8th ed.). Bear in mind that flash calculation can't be calculated ifįeed exists as subcooled liquid or superheated vapor. Where \(z_i\) is molar composition of the inlet feed, \(V\) is the vapor fractions, and \(L\) is the liquid fractions or \(L=1-V\). While for dew point calculations, the unknown liquid-phase compositions can be simplified by asumming \(\sum x_i=1\), so thatįor flash calculation, we calculate the composition based on material balance of the system, P_i^, given \(P\) and \(T\)įor bubble point calculations which vapor-phase compositions are unknown, we can simplify the calculations by asumming \(\sum y_i=1\), so that the Raoult's law become The mathematical equations which reflects the Raoult's law based on the two assumptions above is The liquid phase is an ideal solution, which means it only valid if the chemical species comprise are chemically similar. ![]()
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