removing problem statements

1 files changed, 0 insertions, 40 deletions

diff --git a/Introduction_To_Chemical_Engineering/ch8.ipynb b/Introduction_To_Chemical_Engineering/ch8.ipynb
index a18b8152..d67175c5 100644
--- a/Introduction_To_Chemical_Engineering/ch8.ipynb
+++ b/Introduction_To_Chemical_Engineering/ch8.ipynb
@@ -30,13 +30,11 @@
       "\n",
       "import math \n",
       "\n",
-      "# Variables\n",
       "pressure_difference = 3.4          #in mm water\n",
       "pressure = 1.0133*10**5            #in pa\n",
       "temperatue = 293.        #in K\n",
       "mass_of_air = 29.       #in Kg\n",
       "\n",
-      "# Calculations and Results\n",
       "density_air = pressure/(temperatue*8314)*mass_of_air      #in kg/m3\n",
       "print \"Density of air = %f kg/cu m\"%(density_air)\n",
       "\n",
@@ -76,21 +74,16 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find viscosity of oil \n",
       "\n",
       "import math \n",
       "\n",
-      "# Variables\n",
       "diameter=0.6;     #in m\n",
       "disk_distance=1.25*10**-3;    #in m\n",
       "speed=5.;      #revolutions/min\n",
       "torque=11.5;  #in Joules\n",
       "\n",
-      "# Calculations\n",
-      "#we know that torque= pi*omega*viscosity*radius**4/2*disc_distance\n",
       "viscosity=(2*disk_distance*torque)/(3.14*(10*3.14)*(diameter/2)**4);\n",
       "\n",
-      "# Results\n",
       "print \"viscosity = %f Pa-s\"%(viscosity)\n"
      ],
      "language": "python",
@@ -118,22 +111,18 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the viscosity of solution using given parameters\n",
       "\n",
       "import math \n",
-      "# Variables\n",
       "diameter =10.;               #in mm\n",
       "density_of_solution = 1750.;     #in kg/m3\n",
       "density_of_air = 1.2;           #in kg/m3\n",
       "velocity = 0.9;          #in mm/s\n",
       "\n",
-      "# Calculations and Results\n",
       "viscosity = (density_of_solution-density_of_air)*9.8*(diameter*10**-3)**2/(18*velocity*10**-3);         #expression for finding viscosity\n",
       "\n",
       "print \"viscosity of solution = %f Pa-s\"%(viscosity)\n",
       "\n",
       "\n",
-      "#checking stoke's region validity\n",
       "v=(0.2*viscosity)/(density_of_solution*diameter*10**-3);\n",
       "if v>0.9 :\n",
       "    print \"system follows stokes law\"\n"
@@ -164,11 +153,9 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the flow rate in an orifice\n",
       "\n",
       "import math \n",
       "\n",
-      "# Variables\n",
       "density_of_water = 1000.;     #in kg/m3\n",
       "viscosity = 1*10.**-3;         #in Pa-s\n",
       "pipe_diameter = 250.;         #in mm\n",
@@ -176,14 +163,11 @@
       "density_of_mercury = 13600.;  # in mm\n",
       "manometer_height = 242.;      #in mm\n",
       "\n",
-      "# Calculations and Results\n",
       "height_water_equivalent = (density_of_mercury-density_of_water)*(manometer_height*10**-3)/(density_of_water)     #in m\n",
       "\n",
-      "#assuming Re>30000\n",
       "Co = 0.61;\n",
       "velocity = Co*(2*9.8*height_water_equivalent/(1-(orifice_diameter/pipe_diameter)**4))**0.5;     #in m/s\n",
       "\n",
-      "#checking Reynold's number\n",
       "Re = (orifice_diameter*10**-3*velocity*density_of_water)/viscosity;\n",
       "print \"reynolds number = %f which is greater than 30000\"%(Re)\n",
       "\n",
@@ -220,10 +204,8 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the coefficient of discharge for converging cone\n",
       "\n",
       "import math \n",
-      "# Variables\n",
       "pipe_diameter=0.15;          #in m\n",
       "venturi_diameter=0.05;       #in m\n",
       "pressure_drop=0.12;           #m of water\n",
@@ -231,15 +213,12 @@
       "density = 1000.;              #in kg/m3\n",
       "viscosity = 0.001            #in Pa-s\n",
       "\n",
-      "# Calculations and Results\n",
       "velocity = ((4./3.14)*flow_rate)/(venturi_diameter**2*density);\n",
       "print \"velociy = %f m/s\"%(velocity)\n",
       "\n",
-      "#calculating coefficient of discharge\n",
       "Cv=velocity*((1-(venturi_diameter/pipe_diameter)**4)/(2*9.8*pressure_drop))**0.5;\n",
       "print \"coefficient of discharge = %f\"%(Cv)\n",
       "\n",
-      "#calculating reynold's number\n",
       "Re = velocity*(venturi_diameter/pipe_diameter)**2*pipe_diameter*density/viscosity;\n",
       "print \"reynolds No = %f\"%(Re)\n"
      ],
@@ -270,10 +249,8 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find pA and pB\n",
       "\n",
       "import math \n",
-      "# Variables\n",
       "h1=0.66;       #in m\n",
       "h2=0.203;      #in m\n",
       "h3=0.305      #in m\n",
@@ -282,7 +259,6 @@
       "s1=0.83;\n",
       "s2=13.6;\n",
       "\n",
-      "# Calculations and Results\n",
       "print (\"part 1\")\n",
       "pA=pB+(h2*s2-(h1-h3)*s1)*density*9.81;    #in Pa\n",
       "print \"pressure at A = %f Pa\"%(pA)\n",
@@ -322,17 +298,14 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the rate of oil flow in l/s\n",
       "\n",
       "import math \n",
-      "# Variables\n",
       "density_oil=900.;       #in kg/m3\n",
       "viscosity_oil=38.8*10**-3;    #in Pa-s\n",
       "density_water = 1000.;       #in kg/m3\n",
       "diameter=0.102              #in m\n",
       "manometer_reading=0.9;       #m of water\n",
       "\n",
-      "# Calculations and Results\n",
       "delta_H=manometer_reading*(density_water-density_oil)/density_oil;\n",
       "print \"manometer reading as m of oil = %f m\"%(delta_H)\n",
       "\n",
@@ -378,20 +351,16 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the maximum capacity of keroscene\n",
       "\n",
       "import math \n",
-      "# Variables\n",
       "flow_rate_steel=1.2;     #l/s\n",
       "density_steel=7.92;\n",
       "density_kerosene=0.82;\n",
       "density_water=1;\n",
       "\n",
-      "# Calculations\n",
       "flow_rate_kerosene =(((density_steel-density_kerosene)/density_kerosene)/((density_steel-density_water)/density_water))**0.5*flow_rate_steel\n",
       "\n",
       "\n",
-      "# Results\n",
       "print \"maximum_flow rate of kerosene = %f litre/s\"%(flow_rate_kerosene)\n"
      ],
      "language": "python",
@@ -419,28 +388,19 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#to find the rate of flow of flue gas\n",
       "\n",
       "from scipy.optimize import fsolve \n",
       "import math \n",
-      "# Variables\n",
       "initial_CO2 = 0.02;       #weight fraction\n",
       "flow_rate_CO2 = 22.5;     #gm/s\n",
       "final_CO2=0.031;          #weight fraction\n",
       "\n",
-      "#flow rate of flue gas =x\n",
-      "#amount of CO2 entering = 0.02*x\n",
-      "#amount of CO2 leaving = 0.02x+0.0225\n",
-      "#amount of gas leaving = x+0.0225\n",
-      "#amount of CO2 leaving = 0.031*(x+0.0225)\n",
       "\n",
-      "# Calculations\n",
       "def f(x): \n",
       "\t return initial_CO2*x+0.0225 - 0.031*(x+0.0225)\n",
       "\n",
       "flow_rate_flue_gas=fsolve(f,0)\n",
       "\n",
-      "# Results\n",
       "print \"flow rate of flue gas = %f kg/s\"%(flow_rate_flue_gas)\n",
       "\n"
      ],