This document discusses bubble point calculations. It defines the bubble point as the temperature at which the first drop of a liquid mixture begins to vaporize due to increasing temperature or decreasing pressure. It also provides an example MATLAB code for calculating the bubble point temperature of a mixture using a non-linear equation solver.

1. Bubble Point
Calculations
PRESENTED BY:
MARNEL JOLLY D. FRANCISCO

2. BUBBLE POINT
The bubble point is the
point at which the first
drop of a liquid mixture
begins to vaporize.

3. BUBBLE POINT
What causes a liquid
to vaporize?
Increasing the
temperature
Decreasing the
pressure

4. BUBBLE POINT
CALCULATIONS

5. APPLICATION TO MATLAB
function P2_10A
clear, clc, format short g, format
compact
xguess = 49.5 ;
xsolv=fzero(@NLEfun,xguess);
disp(' Variable values at the solution');
disp([' Unknown value '
num2str(xsolv)]);
%- - - - - - - - - - - - - - - - - - - - - -
function fTbp = NLEfun(Tbp);
xA = .1;
PA = 10 ^ (6.85221 - (1064.63 / (Tbp +
232)));
PB = 10 ^ (6.87776 - (1171.53 /
(224.366 + Tbp)));
xB = 1 - xA;
yA = xA * PA / 760;
yB = xB * PB / 760;
fTbp = xA * PA + xB * PB - 760;

6. APPLICATION TO MATLAB