Problem 3 Matlab code:
fun=inline('0.68/(exp((-1524891/T^2)+7.33129-0.89143*log(168)))+0.32/(exp((-1280557/T^2)+7.94986-0.96455*log(168)))-1','T');T=fsolve(fun,600,optimset('Display','off'))display('Dew
point
temperature')fun=inline('0.68*(exp((-1524891/T^2)+7.33129-0.89143*log(168)))+0.32*(exp((-1280557/T^2)+7.94986-0.96455*log(168)))-1','T');T=fsolve(fun,600,optimset('Display','off'))display('Temperature
in which vapor mixture is completely condensed') T = 719.9200 Dew
point temperature T = 705.7515 Temperature in which vapor mixture
is completely condensed
Problem 6 Matlab code:function
y=num6(p)x=p(1);T=p(2);f1=249.6-290*x-x*exp(14.1603-2948.78/(T-44.563));f2=-49.6+290*x-(1-x)*exp(14.2515-3242.38/(T-47.1806));y=f1^2+f2^2;p=fminsearch('num6',[0.5,400])
p = 0.4268 392.5396
Problem 7 Matlab
code:fun=inline('(0.24*exp((-970688.6/511^2)+7.15059-(0.76984*log(P))+(6.90224/P)))+0.76*exp((-1280557/511^2)+7.94986-(0.964550*log(P)))-1')P=fsolve(fun,50)
fun = Inline function: fun(P) =
(0.24*exp((-970688.6/511^2)+7.15059-(0.76984*log(P))+(6.90224/P)))+0.76*exp((-1280557/511^2)+7.94986-(0.964550*log(P)))-1
Equation solved. fsolve completed because the vector of function
values is near zeroas measured by the default value of the function
tolerance, andthe problem appears regular as measured by the
gradient.
P = 38.8079
Problem 9 Matlab code:
fun=inline('0.1*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(1)=fsolve(fun,10);fun=inline('0.15*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(2)=fsolve(fun,10);fun=inline('0.2*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(3)=fsolve(fun,10);fun=inline('0.25*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(4)=fsolve(fun,10);fun=inline('0.3*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(5)=fsolve(fun,10);fun=inline('0.35*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(6)=fsolve(fun,10);fun=inline('0.4*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(7)=fsolve(fun,10);fun=inline('0.45*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(8)=fsolve(fun,10);fun=inline('0.5*exp(-970688.6/660^2+7.15059-0.76984*log(P)+6.90224/P)-1');P(9)=fsolve(fun,10)x=[0.1:0.05:0.5];plot(x,P)grid
onylabel('Pressure, in Psia');xlabel('xp');,title('xp vs
Pressure');
Results:P =
Columns 1 through 6
38.0355 59.2007 82.4242 107.3954 133.8658 161.6688
Columns 7 through 9
190.6714 220.7786 251.8069
