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diff --git a/Introduction_to_Thermal_Systems_Engineering_Thermodynamics_by_Fluid_Mechanics/7-Using_Entropy.ipynb b/Introduction_to_Thermal_Systems_Engineering_Thermodynamics_by_Fluid_Mechanics/7-Using_Entropy.ipynb new file mode 100644 index 0000000..1243fb1 --- /dev/null +++ b/Introduction_to_Thermal_Systems_Engineering_Thermodynamics_by_Fluid_Mechanics/7-Using_Entropy.ipynb @@ -0,0 +1,308 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 7: Using Entropy" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.10: 10.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.10\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"h1=390.88;\n", +"h2s=285.27;\n", +"k=74.0;//Wcvdot/mdot\n", +"ks=h1-h2s;//(Wcvdot/mdot)s\n", +"nt=k/ks*100;\n", +"disp(nt,'efficiency in %');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.1: 1.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.1\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"P=1.014;\n", +"vg=1.673;\n", +"vf=1.0435/1000;\n", +"T=373.15;//temperature\n", +"sg=7.3549;\n", +"sf=1.3069;\n", +"k=P*(vg-vf)*10^5/1000;\n", +"disp(k,'W/m in kJ/kg');\n", +"k1=T*(sg-sf);\n", +"disp(k1,'Q/m in kJ/kg');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.13: 13.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.13\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"T1=293;//kelvin\n", +"p2=5;//atm\n", +"p1=1;//atm\n", +"n=1.3;\n", +"h2=426.35;\n", +"h1=293.17;\n", +"T2=T1*(p2/p1)^((n-1)/n);\n", +"k=-n*8.314/28.97*(T2-T1)/(n-1);//Wcvdot/mdot\n", +"disp(k,'Wcvdot/mdot in kJ/kg');\n", +"k1=k+h2-h1;\n", +"disp(k1,'Qcvdot/mdot in kJ/kg');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.2: 2.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.2\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"k=-2087.56;//from table t2\n", +"disp(k,'W/m in kJ/kg');\n", +"k1=6.048;//from table t2\n", +"disp(k1,'sigma/m in kJ/kg/K');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.4: 4.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.4\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"Qdot=-1.2;\n", +"Tb=300.0;\n", +"Tf=293.0;\n", +"sigmadot=-Qdot/Tb;\n", +"disp(sigmadot,'heat transfer rate in kW/K');\n", +"sigmadot1=-Qdot/Tb;\n", +"disp(sigmadot1,'heat transfer rate in kW/K');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.5: 5.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.5\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"k1=540.0;//Wcv/m\n", +"h2=2676.1;\n", +"h1=3230.9;\n", +"V2=100;\n", +"V1=160;\n", +"s2=7.3549;\n", +"s1=6.9212;\n", +"k2=k1+(h2-h1)+(V2^2/2-V1^2/2)/1000;\n", +"disp(k2,'Qcvdot/mdot in kJ/kg');\n", +"k3=-k2/350+(s2-s1);\n", +"disp(k3,'sigmacvdot/mdot in kJ/kg/K');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.6: 6.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.6\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"T2=635;//temperature\n", +"T1=530;//temperature\n", +"T3=460;//temperature\n", +"P2=1;//pressure\n", +"P3=1;//pressure\n", +"P1=5.1;//pressure\n", +"cp=0.24;\n", +"R=1.986/28.97;\n", +"k1=-105;//T1-T2\n", +"k2=70;//T1-T3\n", +"a=0.4*k1+0.6*k2;\n", +"disp(a,'since mass is conserved thus value is ');\n", +"k=0.4*(cp*log(T2/T1)-R*log(P2/P1))+0.6*(cp*log(T3/T1)-R*log(P3/P1));\n", +"disp(k,'sigmacvdot/m1dot in Btu/lb/R');\n", +"disp('thus second law of thermodynamics is also conserved');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.8: 8.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.8\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"p1=1;//pressure\n", +"pr2=21.18;\n", +"pr1=1.3860;\n", +"k=1.39;\n", +"T2=1160;//temperature\n", +"T1=540;//temperature\n", +"p=p1*pr2/pr1;\n", +"disp(p,'pressure in atm');\n", +"p2=p1*(T2/T1)^(k/(k-1));\n", +"disp(p2,'Pressure final in atm');\n", +"clear()" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.9: 9.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 7.9\n", +"clc; funcprot(0);\n", +"// Initialization of Variable\n", +"h1=3105.6;\n", +"h2s=2743.0;\n", +"nt=0.75;//effeiciency\n", +"k=nt*(h1-h2s);\n", +"disp(k,'Wcvdot/mdot in kJ/kg');\n", +"clear()" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |