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Diffstat (limited to 'Concepts_of_Thermodynamics/Chapter12.ipynb')
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diff --git a/Concepts_of_Thermodynamics/Chapter12.ipynb b/Concepts_of_Thermodynamics/Chapter12.ipynb new file mode 100755 index 00000000..f88c4b5f --- /dev/null +++ b/Concepts_of_Thermodynamics/Chapter12.ipynb @@ -0,0 +1,201 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 12 - The ideal gas and deviations of real gases"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1 - Pg 290"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the work done in the process\n",
+ "#Initialization of variables\n",
+ "import math\n",
+ "n=1.3\n",
+ "T1=460+60. #R\n",
+ "P1=14.7 #psia\n",
+ "P2=125. #psia\n",
+ "R=1545.\n",
+ "M=29.\n",
+ "#calculations\n",
+ "T2=T1*math.pow((P2/P1),((n-1)/n))\n",
+ "wrev=R/M *(T2-T1)/(1-n)\n",
+ "#results\n",
+ "print '%s %d %s' %(\"Work done =\",wrev,\"ft-lbf/lbm\")\n",
+ "print '%s' %(\"The answer is a bit different due to rounding off error in textbook\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Work done = -58988 ft-lbf/lbm\n",
+ "The answer is a bit different due to rounding off error in textbook\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 2 - Pg 290"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the change in kinetic energy\n",
+ "#Initialization of variables\n",
+ "import math\n",
+ "P2=10. #psia\n",
+ "P1=100. #psia\n",
+ "T1=900. #R\n",
+ "w=50 #Btu/lbm\n",
+ "k=1.39\n",
+ "cp=0.2418\n",
+ "#calculations\n",
+ "T2=T1*math.pow((P2/P1),((k-1)/k))\n",
+ "T2=477\n",
+ "KE=-w-cp*(T2-T1)\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Change in kinetic energy =\",KE,\" Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Change in kinetic energy = 52.3 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 3 - Pg 301"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the final temperature of the system\n",
+ "#Initialization of variables\n",
+ "T1=900. #R\n",
+ "P1=100. #psia\n",
+ "P2=10. #psia\n",
+ "#calculations\n",
+ "print '%s' %(\"From table B-9\")\n",
+ "pr1=8.411\n",
+ "pr2=pr1*P2/P1\n",
+ "T2=468. #R\n",
+ "#results\n",
+ "print '%s %d %s' %(\"Final temperature =\",T2,\"R \")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From table B-9\n",
+ "Final temperature = 468 R \n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4 - Pg 302"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calcuate the final temperature, pressure, enthalpy and the work done in the process\n",
+ "#Initialization of variables\n",
+ "cr=6\n",
+ "p1=14.7 #psia\n",
+ "t1=60.3 #F\n",
+ "M=29.\n",
+ "R=1.986\n",
+ "#calculations\n",
+ "print '%s' %(\"from table b-9\")\n",
+ "vr1=158.58 \n",
+ "u1=88.62 #Btu/lbm\n",
+ "pr1=1.2147\n",
+ "vr2=vr1/cr\n",
+ "T2=1050. #R\n",
+ "u2=181.47 #Btu/lbm\n",
+ "pr2=14.686\n",
+ "p2=p1*(pr2/pr1)\n",
+ "dw=u1-u2\n",
+ "h2=u2+T2*R/M\n",
+ "#results\n",
+ "print '%s %d %s' %(\"final temperature =\",T2,\" R\")\n",
+ "print '%s %.1f %s' %(\"\\n final pressure =\",p2,\"psia\")\n",
+ "print '%s %.2f %s' %(\"\\n work done =\",dw,\"Btu/lbm\")\n",
+ "print '%s %.1f %s' %(\"\\n final enthalpy =\",h2,\" Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "from table b-9\n",
+ "final temperature = 1050 R\n",
+ "\n",
+ " final pressure = 177.7 psia\n",
+ "\n",
+ " work done = -92.85 Btu/lbm\n",
+ "\n",
+ " final enthalpy = 253.4 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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