{

 "metadata": {

  "name": "",

  "signature": "sha256:24612751ac65a9de19e1dea072c5ab537e43d1545604927f1edd7f0e4f7a9d58"

 },

 "nbformat": 3,

 "nbformat_minor": 0,

 "worksheets": [

  {

   "cells": [

    {

     "cell_type": "heading",

     "level": 1,

     "metadata": {},

     "source": [

      "Chapter10:Ocean Energy"

     ]

    },

    {

     "cell_type": "heading",

     "level": 2,

     "metadata": {},

     "source": [

      "Ex10.1:pg-320"

     ]

    },

    {

     "cell_type": "code",

     "collapsed": false,

     "input": [

      "import math\n",

      "# given data\n",

      "R=13.0 # in m\n",

      "r=3.0 # in m\n",

      "A=2.0 # area in km^2\n",

      "ebbcycle=12.42 # in hours\n",

      "effi=0.7 # efficiency of turbine\n",

      "g=9.8 # gravitational acceleration in m/sec^2\n",

      "rho=1025 # density of sea in kg/m^3\n",

      "Powerpotential=0.225*A*(10**6)*((R**2)-(r**2))/10**6 # power potential in MW\n",

      "\n",

      "Powergenerated=effi*Powerpotential # in MW\n",

      "\n",

      "print \"The average power generated by plant is \",Powergenerated,\"MW\"\n",

      "\n",

      "Energysingle=rho*A*(10**6)*g*((R**2)-(r**2))/(2.0*10**6) # Energy in single emptying in MJ\n",

      "\n",

      "ebbyear=364.0*24/ebbcycle\n",

      "\n",

      "annualenergy=Energysingle*ebbyear*effi*1000/3600.0 # in kWh\n",

      "\n",

      "print \"The annual average energy generation is \",round(annualenergy,-7),\"kWh\"\n"

     ],

     "language": "python",

     "metadata": {},

     "outputs": [

      {

       "output_type": "stream",

       "stream": "stdout",

       "text": [

        "The average power generated by plant is  50.4 MW\n",

        "The annual average energy generation is  220000000.0 kWh\n"

       ]

      }

     ],

     "prompt_number": 49

    },

    {

     "cell_type": "heading",

     "level": 2,

     "metadata": {},

     "source": [

      "Ex10.2:pg-324"

     ]

    },

    {

     "cell_type": "code",

     "collapsed": false,

     "input": [

      "import math\n",

      "# given data\n",

      "a=2.0/2 # in m\n",

      "T=8.0 # in secs\n",

      "rho=1025.0 # in kg/m^3\n",

      "w=2*math.pi/T # angular frequency in radian/sec\n",

      "g=9.8 # gravitational acceleration in m/sec^2\n",

      "\n",

      "Lamda=2*(math.pi)*g/(w**2) # in m\n",

      "print \"wavelength is\",round(Lamda,1),\"m\"\n",

      "v=g/w # phase velocity in m/s\n",

      "print \"phase velocity is\",round(v,2),\"m/s\"\n",

      "P=rho*(g**2)*(a**2)*T/(8*math.pi*1000) # power in wave in kW/m\n",

      "print \"power in wave is \",round(P,2),\"kW/m\"\n",

      "E=P*8.76  # average annual wave energy in mWh/m\n",

      "\n",

      "print \"average annual wave energy is \",round(E,1),\"mWh/m\""

     ],

     "language": "python",

     "metadata": {},

     "outputs": [

      {

       "output_type": "stream",

       "stream": "stdout",

       "text": [

        "wavelength is 99.8 m\n",

        "phase velocity is 12.48 m/s\n",

        "power in wave is  31.33 kW/m\n",

        "average annual wave energy is  274.5 mWh/m\n"

       ]

      }

     ],

     "prompt_number": 84

    }

   ],

   "metadata": {}

  }

 ]

}