From 92cca121f959c6616e3da431c1e2d23c4fa5e886 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Tue, 7 Apr 2015 15:58:05 +0530 Subject: added books --- .../Chapter8.ipynb | 309 +++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100755 Thermodynamics:_From_concepts_to_applications/Chapter8.ipynb (limited to 'Thermodynamics:_From_concepts_to_applications/Chapter8.ipynb') diff --git a/Thermodynamics:_From_concepts_to_applications/Chapter8.ipynb b/Thermodynamics:_From_concepts_to_applications/Chapter8.ipynb new file mode 100755 index 00000000..c1d76b67 --- /dev/null +++ b/Thermodynamics:_From_concepts_to_applications/Chapter8.ipynb @@ -0,0 +1,309 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:8780f29f2ca7dbbe28306b63f91de121a8fdfb0cc3c24c326256cd5a0309b1ed" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter8-Entropy" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example1 pg- 131" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#calculate and entropy of ice and environment and universe\n", + "##initialisation of variables\n", + "m= 2 ##kg\n", + "dh= 333.39 ##kg/h\n", + "T= 0 ##C\n", + "T1= 20 ##C\n", + "##CALCULATIONS\n", + "Q12= m*dh\n", + "dS= Q12/(273.15+T)\n", + "dSenvir= -Q12/(273.15+T1)\n", + "dStotal= dS+dSenvir\n", + "##RESULTS\n", + "print'%s %.3f %s'%(' entropy of ice =',dS,'kJ/K')\n", + "print'%s %.3f %s'%('entropy of environment =',dSenvir,'kJ/K')\n", + "print'%s %.3f %s'%('entropy of universe =',dStotal,'kJ/K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " entropy of ice = 2.441 kJ/K\n", + "entropy of environment = -2.275 kJ/K\n", + "entropy of universe = 0.167 kJ/K\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example2-pg132" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#calculate change in entropy in system and environment and entropy\n", + "##initialisation of variables\n", + "Q= 666.78 ##kJ\n", + "T= 0 ##C\n", + "Th= 20. ##C\n", + "##CALCULATIONS\n", + "Ssys= Q/(273.15+T)\n", + "Qh= Q*((273.15+Th)/(273.15+T))\n", + "Senvir= -Qh/(273.15+Th)\n", + "Stotal= Ssys+Senvir\n", + "##RESULTS\n", + "print'%s %.4f %s'%('change in entropy in sysytem =',Ssys,' kJ/K')\n", + "print'%s %.4f %s'%('change in entropy in environment =',Senvir,'kJ/K')\n", + "print'%s %.f %s'%('total change in entropy =',Stotal,'kJ/K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "change in entropy in sysytem = 2.4411 kJ/K\n", + "change in entropy in environment = -2.4411 kJ/K\n", + "total change in entropy = 0 kJ/K\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example3-pg134\n" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#calculate change in entropy\n", + "##initialisation of variables\n", + "S1= 6.2872 ##J/kg K\n", + "S2= 5.8712 ##J/kg K\n", + "m= 18 ##kg\n", + "##CALCULATIONS\n", + "S= m*(S1-S2)\n", + "##RESULTS\n", + "print'%s %.3f %s'%(' change in entropy =',S,'kJ/K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " change in entropy = 7.488 kJ/K\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example4-pg 134" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#calculate change in entropy\n", + "##initialisation of variables\n", + "S2= 5.8328 ##kJ/kg\n", + "S1= 5.8712 ##kJ/kg\n", + "##CALCULATIONS\n", + "S= S2-S1\n", + "##RESULTS\n", + "print'%s %.5f %s'%('change in entropy = ',S,'kJ/K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "change in entropy = -0.03840 kJ/K\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example5-pg135" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#calculate enthalpy and change in entropy\n", + "##initialisation of variables\n", + "m= 0.1 ##kg\n", + "p= 3 ##bar\n", + "p1= 10 ##bar\n", + "h1= 2964.3 ##kJ/kg\n", + "v1=0.2378\n", + "s2= 7.1619 ##kJ/k\n", + "s1= 6.9641 ##kJ/k\n", + "##CALCULATIONS\n", + "h2= h1+(p-p1)*math.pow(10,5)*v1*math.pow(10,-3)\n", + "S= m*(s2-s1)\n", + "##RESULTS\n", + "print'%s %.1f %s'%(' enthalpy =',h2,'kJ/kg')\n", + "print'%s %.5f %s'%('change in entropy =',S,'kJ/K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " enthalpy = 2797.8 kJ/kg\n", + "change in entropy = 0.01978 kJ/K\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example6-pg 137" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#calculate final pressure and change in entropy\n", + "import math\n", + "##initialisation of variables\n", + "p1= 5. ##bar\n", + "V1= 0.4 ##m^2\n", + "V2= 1.2 ##m^3\n", + "R= 8.314 ##J/mol K\n", + "M= 28.##gms\n", + "T1= 80.##C\n", + "##CALCULATIONS\n", + "p2= p1*(V1/V2)\n", + "S= R*math.log(V2/V1)/M\n", + "S1= S*p1*V1*100/((R/M)*(273.15+T1))\n", + "##RESULTS\n", + "print'%s %.3f %s'%(' final pressure =',p2,'bar')\n", + "print'%s %.4f %s'% ('change in entropy =',S1,'kJ/kg K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " final pressure = 1.667 bar\n", + "change in entropy = 0.6222 kJ/kg K\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example7-pg 137" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#calculate heat and change in entropy of system and change in entropy of enironment\n", + "##initialisation of variables\n", + "R= 8.314 ##J/mol K\n", + "M= 29. ##gms\n", + "T= 400. ##K\n", + "p2= 1.6 ##bar\n", + "p1= 1. ##bar\n", + "Tenvir= 300. ##K\n", + "##CALCULATIONS\n", + "q= R*T*math.log(p2/p1)/M\n", + "S= -R*math.log(p2/p1)/M\n", + "Senvir= q/Tenvir\n", + "##RESULTS\n", + "print'%s %.1f %s'%('heat =',q,'kJ/kg')\n", + "print'%s %.4f %s'%('change in entropy of system=',S,'kJ/kg K')\n", + "print'%s %.4f %s'%('change in entropy of environment=',Senvir,'kJ/kg K')\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "heat = 53.9 kJ/kg\n", + "change in entropy of system= -0.1347 kJ/kg K\n", + "change in entropy of environment= 0.1797 kJ/kg K\n" + ] + } + ], + "prompt_number": 7 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit