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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 3 : Work and Heat"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Example 3.1,Page No. 36"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"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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|
