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+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:66c08bada2ebadfa7866fc7150bec839eef52fbd4cb045f832cc9b9f75b7501a"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 1 : Introduction"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.1 Page no : 7"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\t\t\t\t\t\n",
+ "#Input data\n",
+ "BHP = 51.\t\t\t\t\t#Brake horse power in h.p\n",
+ "N = 1000.\t\t\t\t\t#Speed in r.p.m\n",
+ "FHP = 17.\t\t\t\t\t#Friction horse power in h.p\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Calculations\n",
+ "IHP = (BHP+FHP)\t\t\t\t\t#Indicated Horse power in h.p\n",
+ "mn = (BHP/IHP)*100\t\t\t\t\t#Mechanical efficiency in percent\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Output\n",
+ "print 'Mechanical efficiency of the engine is %i percent'%(mn)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Mechanical efficiency of the engine is 75 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.2 Page no : 10"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "#Data taken from Ex.No.1\n",
+ "BHP = 51.\t\t\t\t\t#Brake horse power in h.p\n",
+ "N = 1000.\t\t\t\t\t#Speed in r.p.m\n",
+ "FHP = 17.\t\t\t\t\t#Friction horse power in h.p\n",
+ "\t\t\t\t\t\n",
+ "#Input data\n",
+ "O1 = BHP/2\t\t\t\t\t#Half of b.h.p output in h.p\n",
+ "O2 = 10\t\t\t\t\t#Brake horse power in h.p\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Calculations\n",
+ "#Case(i)\n",
+ "IHP1 = (O1+FHP)\t\t\t\t\t#Indicated Horse power in h.p\n",
+ "mn1 = (O1/IHP1)*100\t\t\t\t\t#Mechanical efficiency in percent\n",
+ "\n",
+ "#Case(ii)\n",
+ "IHP2 = (O2+FHP)\t\t\t\t\t#Indicated Horse power in h.p\n",
+ "mn2 = (O2/IHP2)*100\t\t\t\t\t#Mechanical efficiency in percent\n",
+ "\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Output\n",
+ "print 'Mechanical efficiency of the engine when it delivers \\\n",
+ "\\na) Half the b.h.p output is %3.0f percent \\\n",
+ "\\nb) 10 b.h.p is %3.0f percent'%(mn1,mn2)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Mechanical efficiency of the engine when it delivers \n",
+ "a) Half the b.h.p output is 60 percent \n",
+ "b) 10 b.h.p is 37 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.3 Page no : 12"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\t\t\t\t\t\n",
+ "#Input data\n",
+ "Fc = 220.\t\t\t\t\t#Fuel consumption in gm/(b.h.p*hr)\n",
+ "CV = 10600.\t\t\t\t\t#Calorific value in kcal/kg\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Calculations\n",
+ "hf = (Fc/1000)*CV\t\t\t\t\t#Heat supplied in kcal/hr\n",
+ "O = 632.\t\t\t\t\t\n",
+ "#Output in terms of kcal/hr\n",
+ "bn = (O/hf)*100\t\t\t\t\t#Brake thermal efficiency in percent\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Output\n",
+ "print 'Brake thermal efficiency is %3.1f percent'%(bn)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Brake thermal efficiency is 27.1 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.4 Page no : 12"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\t\t\t\t\t\n",
+ "#Input data\n",
+ "IHP = 45.\t\t\t\t\t#Indicated horse power in h.p\n",
+ "Fc = 13.\t\t\t\t\t#Fuel consumption in litres/hr\n",
+ "g = 0.8\t\t\t\t\t#Specific gravity of oil\n",
+ "nm = 80.\t\t\t\t\t#Mechanical efficiency in percent\n",
+ "CV = 10000.\t\t\t\t\t#Calorific value of fuel in kcal/kg\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Calculations\n",
+ "BHP = (IHP*nm)/100\t\t\t\t\t#Brake horse power in h.p\n",
+ "hi = (Fc*g*CV)\t\t\t\t\t#Heat supplied in kcal/hour\n",
+ "In = ((IHP*4500*60)/(427*hi))*100\t\t\t\t\t#Indicated thermal efficiency in percent\n",
+ "Bn = (In*(nm/100))\t\t\t\t\t#Brake thermal efficiency in percent\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Output\n",
+ "print 'Indicated thermal efficiency is %3.2f percent \\\n",
+ "\\nBrake thermal efficiency is %3.2f percent'%(In,Bn)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Indicated thermal efficiency is 27.36 percent \n",
+ "Brake thermal efficiency is 21.89 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.5 Page no : 13"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\t\t\t\t\t\n",
+ "#Input data\n",
+ "BHP = 15.\t\t\t\t\t#Brake horse power in h.p\n",
+ "In = 28.\t\t\t\t\t#Indicated thermal efficiency in percent\n",
+ "mn = 75.\t\t\t\t\t#Mechanical efficiency in percent\n",
+ "CV = 10000.\t\t\t\t\t#Calorific value of fuel in kcal/kg\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Calculations\n",
+ "Bn = ((In/100)*(mn/100))*100\t\t\t\t\t#Brake thermal efficiency in percent\n",
+ "I = (BHP/(Bn/100))*((4500.*60)/427)\t\t\t\t\t#Input in kcal/hr\n",
+ "Fc = (I/CV)\t\t\t\t\t#Fuel consumption in kg/hr\n",
+ "\n",
+ "\t\t\t\t\t\n",
+ "#Output\n",
+ "print 'Fuel consumption of the engine is %3.2f kg/hr'%(Fc)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Fuel consumption of the engine is 4.52 kg/hr\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-02-05 10:11:37 +0000