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   "source": [
    "#                         Chapter 3 :  Work and Heat"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Example 3.1,Page No. 36"
   ]
  },
  {
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   "execution_count": 1,
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     "text": [
      "Work done is 274.200000 kJ\n"
     ]
    }
   ],
   "source": [
    "#Given values\n",
    "m=1; # mass of steam in kg\n",
    "P=200; # Pressure at which process takes place in kPa\n",
    "Tf=400; #Temperature of final state in C (Celcius)\n",
    "x=0.2; #Quality factor \n",
    "\n",
    "#State 1\n",
    "#Values from Table C-2\n",
    "vf=0.001061; #specific volume of saturated liquid in m^3/kg\n",
    "vg=0.8857;   #specific volume of saturated vapor in m^3/kg\n",
    "\n",
    "#State 2\n",
    "#Values from superheat Table at 400C and 0.2 MPa\n",
    "v2=1.549; #specific volume of steam in m^3/kg\n",
    "\n",
    "#Calculation\n",
    "v1=vf+x*(vg-vf); # specific volume of state 1 in m^3/kg\n",
    "W=m*P*(v2-v1) #Work done by steam at constant pressure(kPa) in kJ\n",
    "print'Work done is %f kJ'%round(W,1)\n"
   ]
  }
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