initial commit / add all books

14 files changed, 316 insertions, 0 deletions

diff --git a/2519/CH11/EX11.1/Ex11_1.sce b/2519/CH11/EX11.1/Ex11_1.sce
new file mode 100755
index 000000000..49f282c62
--- /dev/null
+++ b/2519/CH11/EX11.1/Ex11_1.sce
@@ -0,0 +1,15 @@
+clc

+clear

+//Initialization of variables

+n=1.3

+T1=460+60 //R

+P1=14.7 //psia

+P2=125 //psia

+R=1545

+M=29

+//calculations

+T2=T1*(P2/P1)^((n-1)/n)

+wrev=R/M *(T2-T1)/(1-n)

+//results

+printf("Work done = %d ft-lbf/lbm",wrev)

+disp("The answer is a bit different due to rounding off error in textbook")

diff --git a/2519/CH11/EX11.10/Ex11_10.sce b/2519/CH11/EX11.10/Ex11_10.sce
new file mode 100755
index 000000000..93a3d4895
--- /dev/null
+++ b/2519/CH11/EX11.10/Ex11_10.sce
@@ -0,0 +1,23 @@
+clc

+clear

+//Initialization of variables

+T2=546.6 //R

+T1=520 //R

+T3=560 //R

+v2=1389.2

+v1=186.2

+R0=1.986

+c1=5.02

+c2=4.97

+n1=1

+n2=2

+v3=1203

+//calculations

+ds1=n1*c1*log(T2/T1) + n1*R0*log(v2/v1)

+ds2=n2*c2*log(T2/T3)+n2*R0*log(v2/v3)

+ds=ds1+ds2

+//results

+printf("Change in  entropy for gas 1 = %.3f Btu/R",ds1)

+printf("\n Change in  entropy for gas 1 = %.3f Btu/R",ds2)

+printf("\n Net change in entropy = %.3f Btu/R",ds)

+disp("The answer is a bit different due to rounding off error in the textbook")

diff --git a/2519/CH11/EX11.11/Ex11_11.sce b/2519/CH11/EX11.11/Ex11_11.sce
new file mode 100755
index 000000000..2c2a19d95
--- /dev/null
+++ b/2519/CH11/EX11.11/Ex11_11.sce
@@ -0,0 +1,28 @@
+clc

+clear

+//Initialization of variables

+m1=1 //lbm

+m2=0.94 //lbm

+M1=29

+M2=18

+p1=50 //psia

+p2=100 //psia

+t1=250 +460 //R

+R0=1.986

+cpa=6.96

+cpb=8.01

+//calculations

+xa = (m1/M1)/((m1/M1)+ m2/M2)

+xb=1-xa

+t2=t1*(p2/p1)^(R0/(xa*cpa+xb*cpb))

+d=R0/(xa*cpa+xb*cpb)

+k=1/(1-d)

+dsa=cpa*log(t2/t1) -R0*log(p2/p1)

+dSa=(m1/M1)*dsa

+dSw=-dSa

+dsw=dSw*M2/m2

+//results

+printf("Final remperature = %d R",t2)

+printf("\n Change in entropy of air = %.3f btu/mole R and %.5f Btu/R",dsa,dSa)

+printf("\n Change in entropy of water = %.4f btu/mole R and %.5f Btu/R",dsw,dSw)

+disp("The answers are a bit different due to rounding off error in textbook")

diff --git a/2519/CH11/EX11.12/Ex11_12.sce b/2519/CH11/EX11.12/Ex11_12.sce
new file mode 100755
index 000000000..33fee6842
--- /dev/null
+++ b/2519/CH11/EX11.12/Ex11_12.sce
@@ -0,0 +1,20 @@
+clc

+clear

+//Initialization of variables

+T=250 + 460 //R

+p=29.825 //psia

+pt=50 //psia

+vg=13.821 //ft^3/lbm

+M=29

+R=10.73

+//calculations

+pa=pt-p

+V=1/M *R*T/pa

+ma=V/vg

+xa=p/pt

+mb=xa/M *18/(1-xa)

+//results

+printf("In case 1, volume occupied = %.2f ft^3",V)

+printf("\n In case 1, mass of steam = %.2f lbm steam",ma)

+printf("\n In case 2, mass of steam = %.3f lbm steam",mb)

+

diff --git a/2519/CH11/EX11.13/Ex11_13.sce b/2519/CH11/EX11.13/Ex11_13.sce
new file mode 100755
index 000000000..9eabf7508
--- /dev/null
+++ b/2519/CH11/EX11.13/Ex11_13.sce
@@ -0,0 +1,13 @@
+clc

+clear

+//Initialization of variables

+ps=0.64 //psia

+p=14.7 //psia

+M=29

+M2=46

+//calculations

+xa=ps/p

+mb=xa*9/M *M2/(1-xa)

+//results

+printf("percentage = %.1f percent",mb*100)

+

diff --git a/2519/CH11/EX11.14/Ex11_14.sce b/2519/CH11/EX11.14/Ex11_14.sce
new file mode 100755
index 000000000..667ece799
--- /dev/null
+++ b/2519/CH11/EX11.14/Ex11_14.sce
@@ -0,0 +1,14 @@
+clc

+clear

+//Initialization of variables

+ps=0.5069 //psia

+p=20 //psia

+m1=0.01

+m2=1

+M1=18

+M2=29

+//calculations

+xw= (m1/M1)/(m1/M1+m2/M2)

+pw=xw*p

+//results

+printf("partial pressure of water vapor = %.3f psia",pw)

diff --git a/2519/CH11/EX11.2/Ex11_2.sce b/2519/CH11/EX11.2/Ex11_2.sce
new file mode 100755
index 000000000..2f3a50c71
--- /dev/null
+++ b/2519/CH11/EX11.2/Ex11_2.sce
@@ -0,0 +1,15 @@
+clc

+clear

+//Initialization of variables

+P2=10 //psia

+P1=100 //psia

+T1=900 //R

+w=50 //Btu/lbm

+k=1.39

+cp=0.2418

+//calculations

+T2=T1*(P2/P1)^((k-1)/k)

+T2=477

+KE=-w-cp*(T2-T1)

+//results

+printf("Change in kinetic energy = %.1f Btu/lbm",KE)

diff --git a/2519/CH11/EX11.3/Ex11_3.sce b/2519/CH11/EX11.3/Ex11_3.sce
new file mode 100755
index 000000000..f5cb5289f
--- /dev/null
+++ b/2519/CH11/EX11.3/Ex11_3.sce
@@ -0,0 +1,13 @@
+clc

+clear

+//Initialization of variables

+T1=900 //R

+P1=100 //psia

+P2=10 //psia

+//calculations

+disp("From table B-9")

+pr1=8.411

+pr2=pr1*P2/P1

+T2=468 //R

+//results

+printf("Final temperature = %d R ",T2)

diff --git a/2519/CH11/EX11.4/Ex11_4.sce b/2519/CH11/EX11.4/Ex11_4.sce
new file mode 100755
index 000000000..d73c78a3f
--- /dev/null
+++ b/2519/CH11/EX11.4/Ex11_4.sce
@@ -0,0 +1,25 @@
+clc

+clear

+//Initialization of variables

+cr=6

+p1=14.7 //psia

+t1=60.3 //F

+M=29

+R=1.986

+//calculations

+disp("from table b-9")

+vr1=158.58 

+u1=88.62 //Btu/lbm

+pr1=1.2147

+vr2=vr1/cr

+T2=1050 //R

+u2=181.47 //Btu/lbm

+pr2=14.686

+p2=p1*(pr2/pr1)

+dw=u1-u2

+h2=u2+T2*R/M

+//results

+printf("final temperature = %d R",T2)

+printf("\n final pressure = %.1f psia",p2)

+printf("\n work done = %.2f Btu/lbm",dw)

+printf("\n final enthalpy = %.1f Btu/lbm",h2)

diff --git a/2519/CH11/EX11.5/Ex11_5.sce b/2519/CH11/EX11.5/Ex11_5.sce
new file mode 100755
index 000000000..094871ab4
--- /dev/null
+++ b/2519/CH11/EX11.5/Ex11_5.sce
@@ -0,0 +1,73 @@
+clc

+clear

+//Initialization of variables

+m1=10 //lbm

+m2=15 //lnm

+p=50 //psia

+t=60+460 //R

+M1=32

+M2=28.02

+R0=10.73 

+//calculations

+n1=m1/M1

+n2=m2/M2

+x1=n1/(n1+n2)

+x2=n2/(n1+n2)

+M=x1*M1+x2*M2

+R=R0/M

+V=(n1+n2)*R0*t/p

+rho=p/(R0*t)

+rho2=M*rho

+p1=x1*p

+p2=x2*p

+v1=x1*V

+v2=x2*V

+//results

+disp("part a")

+printf("Mole fractions of oxygen and nitrogen are %.3f and %.3f respectively",x1,x2)

+disp("part b")

+printf("Average molecular weight = %.1f ",M)

+disp("part c")

+printf("specific gas constant = %.4f psia ft^3/lbm R",R)

+disp("part d")

+printf("volume of mixture = %.1f ft^3",V)

+printf("density of mixture is %.5f mole/ft^3 and %.2f lbm/ft^3",rho,rho2)

+disp("part e")

+printf("partial pressures of oxygen and nitrogen are %.2f psia and %.2f psia respectively" ,p1,p2)

+clc

+clear

+//Initialization of variables

+m1=10 //lbm

+m2=15 //lnm

+p=50 //psia

+t=60+460 //R

+M1=32

+M2=28.02

+R0=10.73 

+//calculations

+n1=m1/M1

+n2=m2/M2

+x1=n1/(n1+n2)

+x2=n2/(n1+n2)

+M=x1*M1+x2*M2

+R=1545/M

+V=(n1+n2)*R0*t/p

+rho=p/(R0*t)

+rho2=M*rho

+p1=x1*p

+p2=x2*p

+v1=x1*V

+v2=x2*V

+//results

+disp("part a")

+printf("Mole fractions of oxygen and nitrogen are %.3f and %.3f respectively",x1,x2)

+disp("part b")

+printf("Average molecular weight = %.1f ",M)

+disp("part c")

+printf("specific gas constant = %.4f lbf ft/lbm R",R)

+disp("part d")

+printf("volume of mixture = %.1f ft^3",V)

+printf("\n density of mixture is %.5f mole/ft^3 and %.3f lbm/ft^3",rho,rho2)

+disp("part e")

+printf("partial pressures of oxygen and nitrogen are %.2f psia and %.2f psia respectively" ,p1,p2)

+printf("\n partial volumes of oxygen and nitrogen are %.2f ft^3 and %.2f ft^3 respectively",v1,v2)

diff --git a/2519/CH11/EX11.6/Ex11_6.sce b/2519/CH11/EX11.6/Ex11_6.sce
new file mode 100755
index 000000000..1b12a8f38
--- /dev/null
+++ b/2519/CH11/EX11.6/Ex11_6.sce
@@ -0,0 +1,18 @@
+

+clc

+clear

+//Initialization of variables

+m1=5.28

+m2=1.28

+m3=23.52

+//calculations

+m=m1+m2+m3

+x1=m1/m

+x2=m2/m

+x3=m3/m

+C=12/44 *m1/ m

+O=(32/44 *m1 + m2)/m

+N=m3/m

+//results

+printf("From gravimetric analysis, co2 = %.1f percent , o2 = %.1f percent and n2 = %.1f percent",x1*100,x2*100,x3*100)

+printf("\n From ultimate analysis, co2 = %.2f percent , o2 = %.2f percent and n2 = %.2f percent",C*100,O*100,N*100)

diff --git a/2519/CH11/EX11.7/Ex11_7.sce b/2519/CH11/EX11.7/Ex11_7.sce
new file mode 100755
index 000000000..53d2ef92e
--- /dev/null
+++ b/2519/CH11/EX11.7/Ex11_7.sce
@@ -0,0 +1,23 @@
+clc

+clear

+//Initialization of variables

+x1=1/3

+n1=1

+n2=2

+x2=2/3

+p=12.7 //psia

+cp1=7.01 //Btu/mole R

+cp2=6.94 //Btu/mole R

+R0=1.986

+T2=460+86.6 //R

+T1=460 //R

+p0=14.7 //psia

+//calculations

+p1=x1*p

+p2=x2*p

+ds1= cp1*log(T2/T1) - R0*log(p1/p0)

+ds2= cp2*log(T2/T1) - R0*log(p2/p0)

+S=n1*ds1+n2*ds2

+//results

+printf("Entropy of mixture = %.2f Btu/R",S)

+printf("\n the answer given in textbook is wrong. please check using a calculator")

diff --git a/2519/CH11/EX11.8/Ex11_8.sce b/2519/CH11/EX11.8/Ex11_8.sce
new file mode 100755
index 000000000..8955f3cfe
--- /dev/null
+++ b/2519/CH11/EX11.8/Ex11_8.sce
@@ -0,0 +1,15 @@
+clc

+clear

+//Initialization of variables

+c1=4.97 //Btu/mol R

+c2=5.02 //Btu/mol R

+n1=2

+n2=1

+T1=86.6+460 //R

+T2=50+460 //R

+//calculations

+du=(n1*c1+n2*c2)*(T2-T1)

+ds=(n1*c1+n2*c2)*log(T2/T1)

+//results

+printf("Change in internal energy = %d Btu",du)

+printf("\n Change in entropy = %.3f Btu/R",ds)

diff --git a/2519/CH11/EX11.9/Ex11_9.sce b/2519/CH11/EX11.9/Ex11_9.sce
new file mode 100755
index 000000000..2b9307478
--- /dev/null
+++ b/2519/CH11/EX11.9/Ex11_9.sce
@@ -0,0 +1,21 @@
+clc

+clear

+//Initialization of variables

+n1=1

+n2=2

+c1=5.02

+c2=4.97

+t1=60 //F

+t2=100 //F

+R0=10.73

+p1=30 //psia

+p2=10 //psia

+//calcualtions

+t=(n1*c1*t1+n2*c2*t2)/(n1*c1+n2*c2)

+V1= n1*R0*(t1+460)/p1

+V2=n2*R0*(t2+460)/p2

+V=V1+V2

+pm=(n1+n2)*R0*(t+460)/V

+//results

+printf("Pressure of mixture = %.1f psia",pm)

+