From f35ea80659b6a49d1bb2ce1d7d002583f3f40947 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:38:01 +0530 Subject: updated the code --- 839/CH22/EX22.6/Example_22_6.sce | 113 ++++++++++++++++++++------------------- 1 file changed, 57 insertions(+), 56 deletions(-) (limited to '839/CH22/EX22.6') diff --git a/839/CH22/EX22.6/Example_22_6.sce b/839/CH22/EX22.6/Example_22_6.sce index 326e3f8e9..bea069cab 100755 --- a/839/CH22/EX22.6/Example_22_6.sce +++ b/839/CH22/EX22.6/Example_22_6.sce @@ -1,56 +1,57 @@ -//clear// -clear; -clc; - -//Example 22.6 -//Solution -rho_m = 62.2/18; //[mol/ft^3] -//kya = 0.025*Gy^0.7*Gx^0.25 -H2ObySO2 = 2*0.98964/0.01036; -//and -xb = 1/(H2ObySO2+1); -//The molal mass velocity of the feed gas Gm is -Gm_in = 200/29*(1/0.8); //[mol/ft^2-h] -SO2_in = Gm_in*0.2; //[mol/ft^2-h] -Air_in = Gm_in*0.8; //[mol/ft^2-h] -Air_out = Air_in; //[mol/ft^2-h] -SO2_out = Air_out*(0.005/(1-0.005)); //[mol/ft^2-h] -SO2_abs = SO2_in-SO2_out; //[mol/ft^2-h] -H2O_in = H2ObySO2*SO2_abs; //[mol/ft^2-h] -//Operating line -x = 0:6; -x = x/10^3; -A = x./(1-x); -B = H2O_in/Air_in*A+(0.005/0.995); -y = B./(B+1); -plot(x,y) -xgrid(); -xlabel('x'); -ylabel('y'); -//legend('20C','30C','40C'); -title('x vs y'); -Gxbar = H2O_in*18.02+SO2_abs*64.1/2; //[lb/ft^2-h] -kxa = 0.131*Gxbar^0.82; //[mol/ft^3-h] -//The gas film coefficients are calculated for the bottom -//and the top of the tower: -//At bottom: -Gy_B = (Air_in*29)+(SO2_in*64.1); //[lb/ft^2-h] -kya_B = 0.025*Gy_B^0.7*Gx^0.25; //[mol/ft^3-h] -//At top: -Gy_T = (Air_out*29)+(SO2_out*64.1); //[lb/ft^2-h] -kya_T = 0.025*Gy_T^0.7*Gx^0.25; //[mol/ft^3-h] -//Assuming -yLbar = 0.82 -C = kxa*yLbar/kya_B; -//a line from (yb,xb) with a slope of -C, gives -yi = 0.164; -yLbar = 0.818; -m = 20.1 -Kya_prime = 1/(yLbar/kya_B+m/kxa); //[mol/ft^3-h] -//The fraction of the total resistance that is in the liquid is -Rf = m/kxa/(1/Kya_prime); -//For different values of y1 -y1 =[0.2,0.15,0.1,0.05,0.02,0.005]'; -delta_y1 = [0.103,0.084,0.062,0.034,0.015,0.005]'; -y1i = [0.164,0.118,0.074,0.034,0.012,0.002]'; -delta_yi = y1-y1i; +//clear// +clear; +clc; + + +//Example 22.6 +//Solution +rho_m = 62.2/18; //[mol/ft^3] +//kya = 0.025*Gy^0.7*Gx^0.25 +H2ObySO2 = 2*0.98964/0.01036; +//and +xb = 1/(H2ObySO2+1); +//The molal mass velocity of the feed gas Gm is +Gm_in = 200/29*(1/0.8); //[mol/ft^2-h] +SO2_in = Gm_in*0.2; //[mol/ft^2-h] +Air_in = Gm_in*0.8; //[mol/ft^2-h] +Air_out = Air_in; //[mol/ft^2-h] +SO2_out = Air_out*(0.005/(1-0.005)); //[mol/ft^2-h] +SO2_abs = SO2_in-SO2_out; //[mol/ft^2-h] +H2O_in = H2ObySO2*SO2_abs; //[mol/ft^2-h] +//Operating line +x = 0:6; +x = x/10^3; +A = x./(1-x); +B = H2O_in/Air_in*A+(0.005/0.995); +y = B./(B+1); +plot(x,y) +xgrid(); +xlabel('x'); +ylabel('y'); +//legend('20C','30C','40C'); +title('x vs y'); +Gxbar = H2O_in*18.02+SO2_abs*64.1/2; //[lb/ft^2-h] +kxa = 0.131*Gxbar^0.82; //[mol/ft^3-h] +//The gas film coefficients are calculated for the bottom +//and the top of the tower: +//At bottom: +Gy_B = (Air_in*29)+(SO2_in*64.1); //[lb/ft^2-h] +kya_B = 0.025*Gy_B^0.7*Gxbar^0.25; //[mol/ft^3-h] +//At top: +Gy_T = (Air_out*29)+(SO2_out*64.1); //[lb/ft^2-h] +kya_T = 0.025*Gy_T^0.7*Gxbar^0.25; //[mol/ft^3-h] +//Assuming +yLbar = 0.82 +C = kxa*yLbar/kya_B; +//a line from (yb,xb) with a slope of -C, gives +yi = 0.164; +yLbar = 0.818; +m = 20.1 +Kya_prime = 1/(yLbar/kya_B+m/kxa); //[mol/ft^3-h] +//The fraction of the total resistance that is in the liquid is +Rf = m/kxa/(1/Kya_prime); +//For different values of y1 +y1 =[0.2,0.15,0.1,0.05,0.02,0.005]'; +delta_y1 = [0.103,0.084,0.062,0.034,0.015,0.005]'; +y1i = [0.164,0.118,0.074,0.034,0.012,0.002]'; +delta_yi = y1-y1i; \ No newline at end of file -- cgit