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{
"metadata": {
"name": "CHAPTER5"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter5 : Introduction to Convection"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 5.1 Page NO. 248"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"Cp=871\n",
"Gamma=1.3\n",
"\n",
"Cv=Cp/Gamma\n",
"dT=20\n",
"m=5\n",
"Qp=m*Cp*dT\n",
"Qv=m*Cv*dT\n",
"\n",
"print\" The heat required at constant pressure is \",Qp/1000,\"kj\"\n",
"print\"The heat required at constant volume is \",Qv/1000,\"kj\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The heat required at constant pressure is 87 kj\n",
"The heat required at constant volume is 67.0 kj\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 5.2 Page NO.250"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"T1_Fr=-50\n",
"T2_Fr=-40\n",
"rou1_Fr=1.546*1000\n",
"rou2_Fr=1.518*1000\n",
"\n",
"beta_Fr=-(rou1_Fr-rou2_Fr)/(rou1_Fr*(T1_Fr-T2_Fr))\n",
"beta_acc_Fr=2.63e-3 # the accurate value of volumetric thermal expansion coefficient for Freon-12\n",
"error_Fr=(beta_acc_Fr-beta_Fr)*100/beta_acc_Fr\n",
"T1_He=366\n",
"T2_He=477\n",
"rou1_He=0.13280\n",
"rou2_He=0.10204\n",
"beta_He=-(rou1_He-rou2_He)/(rou1_He*(T1_He-T2_He))\n",
"\n",
"print\"The volumetric thermal expansion coefficient calculated for Freon-12 is \",round(beta_Fr,6),\"1/K\"\n",
"print\"The error introduced in the case of Freon-12 is percent\",round(error_Fr,0),\"percent\"\n",
"print\"The volumetric thermal expansion coefficient calculated for Freon-12 is \",round(beta_He,6),\"1/K\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The volumetric thermal expansion coefficient calculated for Freon-12 is 0.001811 1/K\n",
"The error introduced in the case of Freon-12 is percent 31.0 percent\n",
"The volumetric thermal expansion coefficient calculated for Freon-12 is 0.002087 1/K\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
