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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:2235c937260175b0ab97c5358d9d0f83ecc788771c1f725849b19d038912d334"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter01:Fundamental of Energy - Science and Technology"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1.1:pg-36"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Given data:\n",
+      "T1=500+273.0 #source temp in kelvin \n",
+      "T2=100+273.0 #sink temperature in kelvin\n",
+      "W=1 # output power in kW\n",
+      "\n",
+      "nth=1-(T2/T1) # thermal efficiency\n",
+      "\n",
+      "Q1=1/nth # heat supplied in kW\n",
+      "\n",
+      "Q2=Q1-W # heat rejected in kW\n",
+      "\n",
+      "print \" The heat rejected is \",Q2,\"kW\"\n",
+      "\n",
+      "# the answer in book is wrong due to incorrect  value of T1 "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " The heat rejected is  0.9325 kW\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1.2:pg-37"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Given data:\n",
+      "T1=40+273.0 # ambient temp in kelvin\n",
+      "T2=-10+273.0 # freezer temp in kelvin\n",
+      "Q2=2 # heat loss rate for freezer in kJ/s\n",
+      "\n",
+      "Q1=T1*(Q2/T2) # heat transfer rate in kJ/s\n",
+      "\n",
+      "W=Q1-Q2 # work in kW\n",
+      "\n",
+      "print \"The least power required is \",round(W,2),\"kW\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The least power required is  0.38 kW\n"
+       ]
+      }
+     ],
+     "prompt_number": 14
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1.3:pg-37"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Given data:\n",
+      "Q1=3e4 # heat required in kJ/h\n",
+      "W=2e3 # work required in kJ/h\n",
+      "\n",
+      "Q2=Q1-W # heat abstracted from outside in kJ/h\n",
+      "\n",
+      "COP=Q1/(Q1-Q2) # COP of heat pump\n",
+      "\n",
+      "print \"Heat abstracted from outside air is \",Q2,\"kJ/h\"\n",
+      "print \"COP heat pump is \",COP\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Heat abstracted from outside air is  28000.0 kJ/h\n",
+        "COP het pump is  15.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 16
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1.4:pg-38"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Given data:\n",
+      "T11=320+273.0 # temp at source 1 in kelvin\n",
+      "Q1=10000.0 # heat transfer rate at source 1 in kJ/min\n",
+      "T12=65+273.0 # temp at source 2 in kelvin\n",
+      "Q2=120000.0 #  heat transfer rate at source 2 in kJ/min\n",
+      "T2=35+273.0 # temp of surrounding in kelvin\n",
+      "\n",
+      "n1=1-(T2/T11) # efficiency by source 1\n",
+      "n2=1-(T2/T12) # efficiency by source 2\n",
+      "\n",
+      "W1=Q1*n1 # work at source 1 in kJ/min\n",
+      "W2=Q2*n2 # work at source 2 in kJ/min\n",
+      "\n",
+      "print \"The work done at two sources is W1=\",W1,\" kJ/min W2=\",W2,\"kJ/min\"\n",
+      "print \"The larger power is provided by source 2\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The work done at two sources is W1= 4806.07082631  kJ/min W2= 10650.887574 kJ/min\n",
+        "The larger power is provided by source 2\n"
+       ]
+      }
+     ],
+     "prompt_number": 17
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file