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| author | hardythe1 | 2015-06-03 15:27:17 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-06-03 15:27:17 +0530 |
| commit | 47d7279a724246ef7aa0f5359cf417992ed04449 (patch) | |
| tree | c613e5e4813d846d24d67f46507a6a69d1a42d87 /Elements_of_Thermodynamics_and_heat_transfer/Chapter_9_1.ipynb | |
| parent | 435840cef00c596d9e608f9eb2d96f522ea8505a (diff) | |
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diff --git a/Elements_of_Thermodynamics_and_heat_transfer/Chapter_9_1.ipynb b/Elements_of_Thermodynamics_and_heat_transfer/Chapter_9_1.ipynb new file mode 100755 index 00000000..48194c0d --- /dev/null +++ b/Elements_of_Thermodynamics_and_heat_transfer/Chapter_9_1.ipynb @@ -0,0 +1,449 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:071044d67259dbca809a68700f00a2b22bbcf445c19f6ea5840022a417d2395b"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 9 - Properties of the pure substance"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the Internal energy\n",
+ "#Initialization of variables\n",
+ "T=32 #F\n",
+ "m=1 #lbm\n",
+ "J=778.16\n",
+ "#calculations\n",
+ "print '%s' %(\"From steam tables,\")\n",
+ "hf=0 \n",
+ "p=0.08854 #psia\n",
+ "vf=0.01602 #ft^3/lbm\n",
+ "u=hf-p*144*vf/J\n",
+ "#results\n",
+ "print '%s %.7f %s' %(\"Internal energy =\",u,\" Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From steam tables,\n",
+ "Internal energy = -0.0002625 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 2 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the Change in entropy\n",
+ "#Initialization of variables\n",
+ "P=40 #psia\n",
+ "#calculations\n",
+ "print '%s' %(\"from steam tables,\")\n",
+ "hf=200.8 #Btu/lbm\n",
+ "hg=27 #Btu/lbm\n",
+ "T=495. #R\n",
+ "ds=(hf-hg)/T\n",
+ "#results\n",
+ "print '%s %.3f %s' %(\"Change in entropy =\",ds,\"Btu/lbm R\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "from steam tables,\n",
+ "Change in entropy = 0.351 Btu/lbm R\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 3 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the specific enthalpy\n",
+ "#Initialization of variables\n",
+ "x=0.35\n",
+ "T=18. #F\n",
+ "#calculations\n",
+ "print '%s' %(\"From table B-14,\")\n",
+ "hf=12.12 #Btu/lbm\n",
+ "hg=80.27 #Btu.lbm\n",
+ "hfg=-hf+hg\n",
+ "h=hf+x*hfg\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"specific enthalpy =\",h,\"Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From table B-14,\n",
+ "specific enthalpy = 36.0 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the heat required\n",
+ "#Initialization of variables\n",
+ "x=0.35\n",
+ "T=18 #F\n",
+ "T2=55.5 #F\n",
+ "#calculations\n",
+ "print '%s' %(\"From table B-14,\")\n",
+ "hf=12.12 #Btu/lbm\n",
+ "hg=80.27 #Btu.lbm\n",
+ "hfg=-hf+hg\n",
+ "h=hf+x*hfg\n",
+ "h2=85.68 #Btu/lbm\n",
+ "dh=h2-h\n",
+ "#results\n",
+ "print '%s %.2f %s' %(\"Heat required =\",dh,\"Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From table B-14,\n",
+ "Heat required = 49.71 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the enthalpy and Quality\n",
+ "#Initialization of variables\n",
+ "P=1460. #psia\n",
+ "T=135. #F\n",
+ "P2=700. #psia\n",
+ "#calculations\n",
+ "print '%s' %(\"From mollier chart,\")\n",
+ "h=120 #Btu/lbm\n",
+ "x=0.83\n",
+ "#results\n",
+ "print '%s %d %s' %(\"enthalpy =\",h,\"Btu/lbm\")\n",
+ "print '%s %.2f' %(\"\\n Quality =\",x)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From mollier chart,\n",
+ "enthalpy = 120 Btu/lbm\n",
+ "\n",
+ " Quality = 0.83\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6 - Pg 149"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the Heat transferred\n",
+ "#Initialization of variables\n",
+ "m=1 #lbm\n",
+ "P1=144. #psia\n",
+ "P2=150. #psia\n",
+ "T1=360. #F\n",
+ "J=778.16\n",
+ "#calculations\n",
+ "print '%s' %(\"From table 3,\")\n",
+ "v1=3.160 #ft^3/lbm\n",
+ "h1=1196.5 #Btu/lbm\n",
+ "u1=h1-P1*144.*v1/J\n",
+ "h2=1211.4 #Btu/lbm\n",
+ "u2=h2-P2*144.*v1/J\n",
+ "dq=u2-u1\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Heat transferred =\",dq,\"Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From table 3,\n",
+ "Heat transferred = 11.4 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7 - Pg 150"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the work done and work required\n",
+ "#Initialization of variables\n",
+ "T1=100. #F\n",
+ "P2=1000. #psia\n",
+ "x=0.6\n",
+ "J=778.16\n",
+ "#calculations\n",
+ "print '%s' %(\"From table 3,\")\n",
+ "v=0.01613 #ft^3/lbm\n",
+ "P1=0.9 #psia\n",
+ "wrev=-v*(P2-P1)*144/J\n",
+ "dv=0.000051 #ft^3/lbm\n",
+ "wcomp=(P2+P1)/2 *dv*144/J\n",
+ "wact=wrev/x\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Work done =\",wrev,\"Btu/lbm\")\n",
+ "print '%s %.1f %s' %(\"\\n In case 2, work required =\",wact,\" Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From table 3,\n",
+ "Work done = -3.0 Btu/lbm\n",
+ "\n",
+ " In case 2, work required = -5.0 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 8 - Pg 150"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the Heat transferred\n",
+ "#Initialization of variables\n",
+ "pa=1000. #atm\n",
+ "ta=100. #F\n",
+ "#calculations\n",
+ "hf=67.97 #Btu/lbm\n",
+ "w=3 #Btu/lbm\n",
+ "ha=hf+w\n",
+ "print '%s' %(\"from steam table 2,\")\n",
+ "hc=1191.8 #Btu/lbm\n",
+ "qrev=hc-ha\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Heat transferred =\",qrev,\" Btu/lbm\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "from steam table 2,\n",
+ "Heat transferred = 1120.8 Btu/lbm\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 9 - Pg 151"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the work done and Final state pressure\n",
+ "#Initialization of variables\n",
+ "P1=144 #psia\n",
+ "T1=400 #F\n",
+ "y=0.7\n",
+ "#calculations\n",
+ "print '%s' %(\"From steam tables,\")\n",
+ "h1=1220.4 #Btu/lbm\n",
+ "s1=1.6050 #Btu/lbm R\n",
+ "s2=1.6050 #Btu/lbm R\n",
+ "P2=3 #psia\n",
+ "sf=0.2008 #Btu/lbm R\n",
+ "sfg=1.6855 #Btu/lbm R\n",
+ "x=(s1-sf)/sfg\n",
+ "hf=109.37 #Btu/lbm\n",
+ "hfg=1013.2 #Btu/;bm\n",
+ "h2=hf+x*hfg\n",
+ "work=h1-h2\n",
+ "dw=y*work\n",
+ "h2d=h1-dw\n",
+ "#results\n",
+ "print '%s %d %s' %(\"Work done =\",work,\"Btu/lbm\")\n",
+ "print '%s %.1f %s' %(\"\\n work done in case 2 =\",dw,\"Btu/lbm\")\n",
+ "print '%s %d %s' %(\"\\n Final state pressure =\",P2,\"psia\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From steam tables,\n",
+ "Work done = 266 Btu/lbm\n",
+ "\n",
+ " work done in case 2 = 186.8 Btu/lbm\n",
+ "\n",
+ " Final state pressure = 3 psia\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 10 - Pg 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the Quality of wet steam\n",
+ "#Initialization of variables\n",
+ "pb=14.696 #psia\n",
+ "pa=150 #psia\n",
+ "tb=300 #F\n",
+ "#calculations\n",
+ "print '%s' %(\"From steam tables,\")\n",
+ "hb=1192.8 #Btu/lbm\n",
+ "ha=hb\n",
+ "hf=330.51 #Btu/lbm\n",
+ "hfg=863.6 #Btu/lbm\n",
+ "x=(ha-hf)/hfg*100\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Quality of wet steam =\",x,\"percent\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From steam tables,\n",
+ "Quality of wet steam = 99.8 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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