removing problem statements

1 files changed, 0 insertions, 38 deletions

diff --git a/Engineering_Heat_Transfer/CHAPTER_3.ipynb b/Engineering_Heat_Transfer/CHAPTER_3.ipynb
index 93f29ad1..98a7ff3d 100644
--- a/Engineering_Heat_Transfer/CHAPTER_3.ipynb
+++ b/Engineering_Heat_Transfer/CHAPTER_3.ipynb
@@ -27,12 +27,8 @@
      "cell_type": "code",

      "collapsed": false,

      "input": [

-      "# Determination of the heat-flow rate from one tube \n",

-      "# specifications of 1 standard type K from table F2\n",

       "\n",

-      "#iven\n",

       "OD=0.02858              # outer diameter in m\n",

-      "# from figure 3.11\n",

       "M=8.0                     # total number of heat-flow lanes\n",

       "N=6.0                     # number of squares per lane\n",

       "S_L=M/N                   # conduction shape factor\n",

@@ -40,11 +36,9 @@
       "T1=85            # temperature of tube surface\n",

       "T2=0             # temperature of ground beneath the slab\n",

       "\n",

-      "#Calculation\n",

       "q_half=k*S_L*(T1-T2)\n",

       "q=2*q_half\n",

       "\n",

-      "#Result\n",

       "print\"The total heat flow per tube is\",round(q,0),\" W/m\"\n"

      ],

      "language": "python",

@@ -72,11 +66,7 @@
      "cell_type": "code",

      "collapsed": false,

      "input": [

-      "#  Determination of the heat transferred from the buried pipe per unit length\n",

-      "# shape factor number 8 is selected from table 3.1\n",

-      "# specifications of 10 nominal, schedule 80 pipe from table F1\n",

       "\n",

-      "#Given\n",

       "import math\n",

       "OD=10.74/12 # diameter in ft\n",

       "R=OD/2\n",

@@ -113,34 +103,25 @@
      "cell_type": "code",

      "collapsed": false,

      "input": [

-      "# Determination of the heat lost through the walls, using the shape-factor method. \n",

-      "#(b) Repeat the calculations but neglect the effects of the corners that is, . \n",

       "\n",

-      "#Given\n",

       "k = 1.07           # thermal conductivity of silica brick from appendix table B3 in W/(m.K)\n",

       "S1_A=0.138*0.138/0.006\n",

       "nA=2\n",

       "\n",

-      "# Calculation of total shape factor\n",

-      "# From figure 3.12, for component A\n",

       "St_A=nA*S1_A      # Total shape factor of component A\n",

       "\n",

-      "# For component B\n",

       "S1_B=0.138*0.188/0.006\n",

       "nB=4\n",

       "St_B=nB*S1_B # Total shape factor of component B\n",

       "\n",

-      "# For component C\n",

       "S3_C=0.15*0.006\n",

       "nC=8\n",

       "St_C=nC*S3_C # Total shape factor of component C\n",

       "\n",

-      "# For component D\n",

       "S2_D=0.54*0.188\n",

       "nD=4\n",

       "St_D=nD*S2_D # Total shape factor of component D\n",

       "\n",

-      "# For component E\n",

       "S2_E=0.138*0.54\n",

       "nE=8\n",

       "St_E=nE*S2_E # Total shape factor of component E\n",

@@ -153,9 +134,7 @@
       "q_1=k*S*(T1-T2)\n",

       "Error=(q-q_1)/q\n",

       "\n",

-      "#result\n",

       "print\"(a)The heat transferred through the walls of the furnace is \",round(q/1000,1),\"kw\"\n",

-      "# Neglecting the effects of the edges and corners, the shape factor for all walls is found as \n",

       "print\"(b The heat transferred is\",q_1/1000,1,\"kw\"\n",

       "print\"  The error introduced by neglecting heat flow through the edges and corners is \",round(Error*100,1),\" percent\"\n"

      ],

@@ -186,26 +165,17 @@
      "cell_type": "code",

      "collapsed": false,

      "input": [

-      "# Determination of the conduction shape factor for the underground portion of the configuration\n",

-      "# specifications of  4 nominal, schedule 40 pipe from table F1\n",

       "\n",

-      "#Given\n",

       "OD=4.5/12.0          # diameter in ft\n",

       "R=OD/2.0\n",

       "\n",

-      "# For pipe A\n",

-      "#calculation\n",

       "import math\n",

       "L_A=4.5           # length in ft\n",

-      "# shape factor number 9 is selected from table 3.1\n",

       "S_A=(2*math.pi*L_A)/(math.log(2*(L_A)/R))\n",

-      "# For pipe B\n",

       "L_B=18 # length in ft\n",

-      "# shape factor number 9 is selected from table 3.1\n",

       "S_B=(2*math.pi*L_B)/(math.acosh(L_A/R))\n",

       "S=2*S_A+S_B\n",

       "\n",

-      "#Result\n",

       "print\"The total conduction shape factor for the system is\",round(S,1)\n"

      ],

      "language": "python",

@@ -243,18 +213,13 @@
      "cell_type": "code",

      "collapsed": false,

      "input": [

-      "#(a)plot graph the temperature distribution existing within the rod. \n",

-      "#(b) Use the numerical formulation of this section to obtain the temperature distribution.\n",

-      "#(c) Compare the two models to determine how well the numerical results approximate the exact results\n",

       "\n",

-      "#Given\n",

       "h=1.1           # convective coefficient in BTU/(hr.ft^2. degree R)\n",

       "Tw=200.0\n",

       "T_inf=68.0      # ambient temperature\n",

       "k=0.47          # thermal conductivity in BTU/(hr.ft.degree R) from table B3\n",

       "D=0.25/12       # diameter in ft\n",

       "\n",

-      "#Calculation\n",

       "A=math.pi*D**(2)/4.0     # cross sectional area in ft^2\n",

       "P=math.pi*D         # perimeter in ft\n",

       "L=6/12.0 # length in ft\n",

@@ -264,19 +229,16 @@
       "de=dz/L\n",

       "K=2+(mL*de)**2\n",

       "\n",

-      "#Tempature can be calculated as\n",

       "T4=T_inf+(Tw-T_inf)*(2/(K**4-4*K**2+2))\n",

       "T3=T_inf+(Tw-T_inf)*(K/(K**4-4*K**2+2))\n",

       "T2=T_inf+(Tw-T_inf)*((K**2-1)/(K**4-4*K**2+2))\n",

       "T1=T_inf+(Tw-T_inf)*((K**3-3*K)/(K**4-4*K**2+2))\n",

       "\n",

-      "#result\n",

       "print\"The temprature distribution is T4=\",round(T4,2),\"F\"\n",

       "print\"The temprature distribution is T3=\",round(T3,2),\"F\"\n",

       "print\"The temprature distribution is T2=\",round(T2,2),\"F\"\n",

       "print\"The temprature distribution is T1=\",round(T1,2),\"F\"\n",

       "\n",

-      "#(b)plot\n",

       "import matplotlib.pyplot as plt\n",

       "import numpy as np\n",

       "T=[200.0,77.33,68.66,68.05,68]\n",