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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 10 - The pvT relationships"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
" Example 1 - Pg 230"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#calculate the pressure of the gas using both ideal and vanderwaals cases\n",
"#Initialization of variables\n",
"m=1 #lbm\n",
"T1=212+460. #R\n",
"sv=0.193 #ft^3/lbm\n",
"M=44\n",
"a=924.2 #atm ft^2 /mole^2\n",
"b=0.685 #ft^3/mol\n",
"R=0.73 #atm ft^3/R mol\n",
"#calculations\n",
"v=sv*M\n",
"p=R*T1/v\n",
"p2=R*T1/(v-b) -a/v/v\n",
"#results\n",
"print '%s %.1f %s' %(\"In ideal gas case, pressure =\",p,\"atm\")\n",
"print '%s %.1f %s' %(\"\\n In vanderwaals equation, pressure =\",p2,\"atm\")\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"In ideal gas case, pressure = 57.8 atm\n",
"\n",
" In vanderwaals equation, pressure = 50.0 atm\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 2 - Pg 232"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#calculate the volume of the gas\n",
"#Initialization of variables\n",
"m=1 #lbm\n",
"p=50.9 #atm\n",
"t=212+460. #R\n",
"R=0.73\n",
"#calculations\n",
"pc=72.9 #atm\n",
"tc=87.9 +460 #R\n",
"pr=p/pc\n",
"Tr=t/tc\n",
"z=0.88\n",
"v=z*R*t/p\n",
"#results\n",
"print '%s %.3f %s' %(\"volume =\",v,\"ft^3/mole\")\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"volume = 8.481 ft^3/mole\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3 - Pg 233"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#calculate the pressure of the gas\n",
"#Initialization of variables\n",
"t=212+460. #R\n",
"v=0.193 #ft^3/lbm\n",
"M=44\n",
"R=0.73\n",
"#calculations\n",
"tc=87.9+460. #F\n",
"zc=0.275\n",
"vc=1.51 #ft^3/mol\n",
"tr=t/tc\n",
"vr=v*M/vc\n",
"vrd=vr*zc\n",
"z=0.88\n",
"p=z*R*t/(M*v)\n",
"#results\n",
"print '%s %.1f %s' %(\"Pressure =\",p,\"atm\")\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Pressure = 50.8 atm\n"
]
}
],
"prompt_number": 3
}
],
"metadata": {}
}
]
}
|
