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Diffstat (limited to 'Thermodynamics_by_J._P._Holman/ch2.ipynb')
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diff --git a/Thermodynamics_by_J._P._Holman/ch2.ipynb b/Thermodynamics_by_J._P._Holman/ch2.ipynb new file mode 100755 index 00000000..bfbcf6e6 --- /dev/null +++ b/Thermodynamics_by_J._P._Holman/ch2.ipynb @@ -0,0 +1,240 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:f1d828103bb270e68cac7fea789e3b42ea64320d86ed9fcc67d96c498216f06e" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 2 : The first law of Thermodynamics" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 2.1 pg : 37" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\t\t\t\n", + "# Variables\n", + "P1 = 200. \t\t\t#psia\n", + "P2 = 15. \t\t\t#psia\n", + "V1 = 1. \t\t\t#ft**3\n", + "g = 1.3\n", + "\t\t\t\n", + "# Calculations\n", + "V2 = V1*(P1/P2)**(1/g)\n", + "W = -(144*(P2*V2 - P1*V1)/(g-1))\n", + "\t\t\t\n", + "# Results\n", + "print \"Work done = %.2e ft. lbf\"%(W)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Work done = 4.32e+04 ft. lbf\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 2.2 pg : 37" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\t\t\t\n", + "# Variables\n", + "L = 0.305 \t\t\t#m\n", + "v = 4.58 \t\t\t#m/s\n", + "i = 10. \t\t\t#A\n", + "B = 1. \t\t\t#W/m**2\n", + "\t\t\t\n", + "# Calculations\n", + "F = i*B*L\n", + "W = F*v\n", + "\t\t\t\n", + "# Results\n", + "print \"Force necessary = %.2f N\"%(F)\n", + "print \" Work per unit time = %.2f W\"%(W)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Force necessary = 3.05 N\n", + " Work per unit time = 13.97 W\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 2.3 pg : 45" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\t\t\t\n", + "# Variables\n", + "U = 2545. \t\t\t#B/hr\n", + "m = 50. \t\t\t#lbm\n", + "cv = 1.\n", + "\t\t\t\n", + "# Calculations\n", + "dT = U/(m*cv)\n", + "\t\t\t\n", + "# Results\n", + "print \"Change in temperature = %.1f F\"%(dT)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Change in temperature = 50.9 F\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 2.4 pg : 46" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\t\t\t\n", + "# Variables\n", + "P1 = 14.7 \t\t\t#psia\n", + "V1 = 1. \t\t\t#ft**3\n", + "P2 = 14.7 \t\t\t#psia\n", + "M = 28.97\n", + "T1 = 70.+460 \t\t\t#R\n", + "T2 = 500.+460 \t\t\t#R\n", + "cp = 0.24 \t\t\t#B/lbm F\n", + "\t\t\t\n", + "# Calculations\n", + "m = P1*144*V1*M/(1545*T1)\n", + "Qp = m*cp*(T2-T1)\n", + "V2 = V1*P1*T2/(P2*T1)\n", + "\n", + "W = P1*144*(V2-V1)\n", + "W = -W/778\n", + "dU = Qp+W\n", + "\t\t\t\n", + "# Results\n", + "print \"Work done = %.2f Btu\"%(W)\n", + "print \" Heat added = %.2f Btu\"%(Qp)\n", + "print \" Change in internal energy = %.2f Btu\"%(dU)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Work done = -2.21 Btu\n", + " Heat added = 7.73 Btu\n", + " Change in internal energy = 5.52 Btu\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 2.5 pg : 47" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\t\t\t\n", + "# Variables\n", + "l = 20. \n", + "b = 25.\n", + "h = 8.\n", + "Vp = 2.5\n", + "n = 20.\n", + "P = 14.7 \t\t\t#psia\n", + "T = 530. \t \t\t#R\n", + "t = 15. \t\t \t#min\n", + "Qp = 375. \t\t\t #B/hr\n", + "cv = 0.1715 \t\t\t#B/lbm F\n", + "\t\t\t\n", + "# Calculations\n", + "Vroom = l*b*h\n", + "Vair = Vroom-Vp*n\n", + "m = P*Vair*144/(53.35*T)\n", + "dU = n*Qp\n", + "U = t*dU/60\n", + "dT = U/(m*cv)\n", + "\t\t\t\n", + "# Results\n", + "print \"Air temperature rise = %d F\"%(dT+1)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Air temperature rise = 37 F\n" + ] + } + ], + "prompt_number": 6 + } + ], + "metadata": {} + } + ] +}
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