diff options
Diffstat (limited to 'Mechanical_Engineering_Thermodynamics/Chapter_15.ipynb')
-rwxr-xr-x | Mechanical_Engineering_Thermodynamics/Chapter_15.ipynb | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/Mechanical_Engineering_Thermodynamics/Chapter_15.ipynb b/Mechanical_Engineering_Thermodynamics/Chapter_15.ipynb new file mode 100755 index 00000000..546b25c5 --- /dev/null +++ b/Mechanical_Engineering_Thermodynamics/Chapter_15.ipynb @@ -0,0 +1,171 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 15 - Vapor Cycles : More Efficient Cycles"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1 - Pg 243"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#calculate the improvement in efficiency\n",
+ "#initialization of varaibles\n",
+ "e=0.85\n",
+ "print '%s' %(\"From Mollier chart and table 3,\")\n",
+ "h1=1474.5 #B/lb\n",
+ "s1=1.5603 #B/lb R\n",
+ "h2s=1277.5 #B/lb\n",
+ "#calculations\n",
+ "h2=h1-e*(h1-h2s)\n",
+ "h3=1522.4 #B/lb\n",
+ "h4s=948 #B/lb\n",
+ "h4=h3-e*(h3-h4s)\n",
+ "h5=47.6 #B/lb\n",
+ "h6=53.5 #B/lb\n",
+ "h7s=840 #B/lb\n",
+ "h7=h1-e*(h1-h7s)\n",
+ "h8=1493.2 #B/lb\n",
+ "h9s=866 #B/lb\n",
+ "h9=h8-e*(h8-h9s)\n",
+ "h11=51.5 #B/lb\n",
+ "eta1=0.401\n",
+ "eta2=0.375\n",
+ "eta3=0.366\n",
+ "IE1=(eta1-eta2)/eta2\n",
+ "IE2=(eta1-eta3)/eta3\n",
+ "#results\n",
+ "print '%s %.1f %s' %(\"Improvement in efficiency =\",IE1*100,\"percent\")\n",
+ "print '%s %.1f %s' %(\"\\nImprovement in efficiency in case 2=\",IE2*100,\"percent\")\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From Mollier chart and table 3,\n",
+ "Improvement in efficiency = 6.9 percent\n",
+ "\n",
+ "Improvement in efficiency in case 2= 9.6 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 2a - Pg 257"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Calculate the fraction of energy supplied \n",
+ "#initialization of varaibles\n",
+ "print '%s' %(\"From mollier chart and table 3,\")\n",
+ "h1=1371. #B/lb\n",
+ "h2s=1149. #B/lb\n",
+ "h3=118. #B/lb\n",
+ "e=0.9\n",
+ "print '%s' %(\"Neglecting pump work,\")\n",
+ "Q1=h1-h3\n",
+ "W=156. #B/lb\n",
+ "eta1=W/Q1\n",
+ "Q=h1-W-h3\n",
+ "UE=W+e*Q\n",
+ "fraction = UE/Q1\n",
+ "#results\n",
+ "print '%s %.2f' %(\"Fraction supplied = \",fraction)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From mollier chart and table 3,\n",
+ "Neglecting pump work,\n",
+ "Fraction supplied = 0.91\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 2b - Pg 258"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Calculate the fraction of energy supplied \n",
+ "#initialization of varaibles\n",
+ "print '%s' %(\"From mollier chart and table 3,\")\n",
+ "h1=1371. #B/lb\n",
+ "h2s=1149. #B/lb\n",
+ "h3=118. #B/lb\n",
+ "e=0.23\n",
+ "e2=0.9\n",
+ "print '%s' %(\"Neglecting pump work,\")\n",
+ "Q1=h1-h3\n",
+ "W=156. #B/lb\n",
+ "eta1=W/Q1\n",
+ "Q=h1-W-h3\n",
+ "We=W/e\n",
+ "UE=We+Q\n",
+ "UE1=W+e2*Q\n",
+ "Q2=Q+We\n",
+ "fraction = UE1/UE\n",
+ "#results\n",
+ "print '%s %.2f' %(\"Fraction supplied = \",fraction)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "From mollier chart and table 3,\n",
+ "Neglecting pump work,\n",
+ "Fraction supplied = 0.64\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |