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Diffstat (limited to 'backup/Thermodynamics_by_J._P._Holman_version_backup/ch4.ipynb')
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diff --git a/backup/Thermodynamics_by_J._P._Holman_version_backup/ch4.ipynb b/backup/Thermodynamics_by_J._P._Holman_version_backup/ch4.ipynb deleted file mode 100755 index 2420bc0c..00000000 --- a/backup/Thermodynamics_by_J._P._Holman_version_backup/ch4.ipynb +++ /dev/null @@ -1,307 +0,0 @@ -{ - "metadata": { - "name": "", - "signature": "sha256:694b356fc4f85fd8aa841dd0d02eae327738df2eb161cb913631664ccceb9a07" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "Chapter 4 : principles of energy analysis" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.1 pg : 79" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "m = 1.\n", - "he = 1148.8 \t\t\t#B/lbm\n", - "hi = 1357. \t\t\t#B/lbm\n", - "Ve = 100. \t\t\t#ft/sec\n", - "Vi = 800. \t\t\t#ft/sec\n", - "\t\t\t\n", - "# Calculations\n", - "dW = m*(he-hi) + m*(Ve**2 - Vi**2)/(2*32.2*778)\n", - "dWhr = dW*3600\n", - "hp = -dWhr/2545.\n", - "\t\t\t\n", - "# Results\n", - "print \"Horsepower output = %d hp\"%(hp+1)\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Horsepower output = 313 hp\n" - ] - } - ], - "prompt_number": 1 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.2 pg:79" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "rate = 80. \t\t\t#lbm/min\n", - "T1 = 100. \t\t\t#F\n", - "P1 = 100. \t\t\t#psia\n", - "P2 = 1000. \t\t\t#psia\n", - "\t\t\t\n", - "# Calculations\n", - "v = 0.01613 \t\t\t#ft**3/lbm\n", - "W = rate*(P2-P1)*144*v\n", - "\t\t\t\n", - "# Results\n", - "print \"Work done = %.2f ft-lbf/min\"%(round(W,-3))\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Work done = 167000.00 ft-lbf/min\n" - ] - } - ], - "prompt_number": 2 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.3 pg : 81" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "hi = 1279.1 \t\t\t#B/lbm\n", - "\t\t\t\n", - "# Calculations\n", - "u2 = hi\n", - "T2 = 564. \t\t\t#F\n", - "\t\t\t\n", - "# Results\n", - "print \"Temperature of steam = %d F\"%(T2)\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Temperature of steam = 564 F\n" - ] - } - ], - "prompt_number": 3 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.4 pg : 82" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "import math \n", - "P1 = 20. \t\t\t#psia\n", - "P2 = 100. \t\t\t#psia\n", - "V = 3. \t \t\t#ft**3\n", - "T = 560. \t\t\t#R\n", - "ma = 0.289\n", - "\t\t\t\n", - "# Calculations\n", - "ma = P1*V/(53.35*T)\n", - "Wa = -ma*53.35*T*math.log(P1/P2)\n", - "Qa = -Wa\n", - "Va2 = 3/5.\n", - "V2s = V-Va2\n", - "hi = 1279.1 \t\t\t#B/lbm\n", - "T2s = 536. \t\t\t#F\n", - "\t\t\t\n", - "# Results\n", - "print \"Final temperature = %d F\"%(T2s)\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Final temperature = 536 F\n" - ] - } - ], - "prompt_number": 5 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.5 pg : 87" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "import math\n", - "\n", - "# Variables\n", - "P1 = 200. \t\t\t#psia\n", - "P2 = 100. \t\t\t#psia\n", - "T1 = 300.+460 \t\t\t#R\n", - "g = 1.4\n", - "cp = 0.24\n", - "\t\t\t\n", - "# Calculations\n", - "T2 = (T1)*(P2/P1)**((g-1)/g)\n", - "V2 = math.sqrt(2*32.2*778*cp*(T1-T2))\n", - "\t\t\t\n", - "# Results\n", - "print \"Final velocity = %d ft/sec\"%(V2)\n", - "\n", - "# check answer using calculator" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Final velocity = 1281 ft/sec\n" - ] - } - ], - "prompt_number": 7 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.6 pg : 88" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "T1 = 500.+460 \t\t\t#R\n", - "P1 = 50. \t\t\t#psia\n", - "P2 = 15. \t\t\t#psia\n", - "g = 1.4\n", - "cp = 0.24\n", - "\t\t\t\n", - "# Calculations\n", - "T2 = T1*(P2/P1)**((g-1)/g)\n", - "W = cp*(T2-T1) + (T1-460)**2 /(2*32.2*778)\n", - "\t\t\t\n", - "# Results\n", - "print \"Net work output from turbine = %.1f B/lbm\"%(W)\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Net work output from turbine = -62.1 B/lbm\n" - ] - } - ], - "prompt_number": 8 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 4.7 pg : 91" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\t\t\t\n", - "# Variables\n", - "T1 = 150.+460 \t\t\t#R\n", - "T1 = 40.+460 \t\t\t#R\n", - "\t\t\t\n", - "# Calculations\n", - "h2 = 43.850 \t\t\t#B/lbm\n", - "hf2 = 17.273\n", - "hfg2 = 64.163\n", - "x2 = (h2-hf2)/hfg2\n", - "\t\t\t\n", - "# Results\n", - "print \"Quality of freon vapor = %.3f\"%(x2)\n" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Quality of freon vapor = 0.414\n" - ] - } - ], - "prompt_number": 9 - } - ], - "metadata": {} - } - ] -}
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