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diff --git a/Fundamentals_Of_Thermodynamics/Chapter10.ipynb b/Fundamentals_Of_Thermodynamics/Chapter10.ipynb new file mode 100755 index 00000000..59bbb80a --- /dev/null +++ b/Fundamentals_Of_Thermodynamics/Chapter10.ipynb @@ -0,0 +1,164 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:6310b6690e48041fd88dd8277353623ea538798dfeeeb9a3819409de065b2175"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter10:IRREVERSIBILITY AND AVAILABILITY"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex10.1:pg-386"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 1\n",
+ "#Calculating reversible work\n",
+ "\n",
+ "#Form the Steam Tables,the inlet and the exit state properties are \n",
+ "hi=171.95 #initial specific heat of enthalpy in kJ/kg\n",
+ "si=0.5705 #initial specific entropy in kJ/kg-K\n",
+ "se=2.1341 #final specific entropy in kJ/kg-K\n",
+ "he=765.34 #final specific heat of enthalpy in kJ/kg-K\n",
+ "m=5 #mass flow rate of feedwater in kg/s\n",
+ "q1=900/m #heat added by one of the sources in kJ/kg\n",
+ "q2=he-hi-q1 #second heat transfer in kJ/kg\n",
+ "To=25+273.3 #Temp. of the surroundings in K\n",
+ "T1=100+273.2 #temp. of reservoir of one of the source in K\n",
+ "T2=200+273.2 #temp. of reservoir of second source in K\n",
+ "wrev=To*(se-si)-(he-hi)+q1*(1-To/T1)+q2*(1-To/T2) #reversible work in kJ/kg\n",
+ "print\"\\n Hence, the irreversibility is\",round(wrev,1),\"kJ/kg\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " Hence, the irreversibility is 62.0 kJ/kg\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex10.2:pg-387"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 2\n",
+ "#Calculating reversible work\n",
+ "import math\n",
+ "#Form the Steam Tables,the inlet and the exit state properties are\n",
+ "hi=298.6 #initial specific heat of enthalpy in kJ/kg\n",
+ "si=6.8631 #initial specific entropy in kJ/kg-K\n",
+ "se=7.4664 #final specific entropy in kJ/kg-K\n",
+ "he=544.7 #final specific heat of enthalpy in kJ/kg-K\n",
+ "q=-50 #heat lost to surroundings in kJ/kg\n",
+ "w=hi-he+q #work in kJ/kg\n",
+ "To=25+273.2 #Temp. of the surroundings in K\n",
+ "P1=100 #Pressure of ambient air in kPa\n",
+ "P2=1000 #Final pressure of air after compression in kPa\n",
+ "R=0.287 #Universal gas constant in kJ/kg-K\n",
+ "wrev=To*(se-si-R*math.log(P2/P1))-(he-hi)+q*(1-To/To)#reversible work for the given change of state in kJ/kg\n",
+ "i=wrev-w #irreversibility in kJ/kg\n",
+ "print\"\\n Hence, the irreversibility is\",round(i,1),\"kJ/kg\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " Hence, the irreversibility is 32.8 kJ/kg\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex10.3:pg-390"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 3\n",
+ "#Calculating reversible work and irreversibility\n",
+ "\n",
+ "#Form the Steam Tables at state 1\n",
+ "u1=1243.5 #initial specific internal energy in kJ/kg\n",
+ "s1=4.4819 #initial specific entropy in kJ/kg-K\n",
+ "v1=28.895 #initial specific volume in m^3/kg\n",
+ "v2=2*v1 #final specific volume in kg/m^3\n",
+ "u2=u1 #initial specific internal energy in kJ/kg\n",
+ "#These two independent properties, v2 and u2 , fix state 2.The final temp. is calculated by interplotation using the data for T2=5C and v2,x=0/3928 and u=948.5 kJ/kg. For T2=10C and v2, x=0.5433 and u=1317 kJ/kg\n",
+ "T2=9.1+273.2 #final temp. in K\n",
+ "x2=0.513 #quality in final state\n",
+ "s2=4.644 #final specific entropy in kJ/kg\n",
+ "V1=1 #volume of part of A in m^3\n",
+ "m=V1/v1 #mass flow rate in kg/s\n",
+ "To=20+273.2 #Room temperature in K\n",
+ "Wrev=To*m*(s2-s1) #reversible work in kJ\n",
+ "I=Wrev #irreversibility of the process\n",
+ "print\"\\n The irreversibility is \",round(I,3),\"kJ\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " The irreversibility is 1.645 kJ\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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