1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
{
"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": [
"#How much heat must be added for the two cases.\n",
"\n",
"#Given\n",
"# properties of CO at 300K from appendix table D2\n",
"Cp=871\n",
"Gamma=1.3\n",
"\n",
"#calculation\n",
"Cv=Cp/Gamma\n",
"dT=20\n",
"m=5\n",
"Qp=m*Cp*dT\n",
"Qv=m*Cv*dT\n",
"\n",
"#Result\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": [
"#verify the valve for Voluemetric thermal coefficient\n",
"\n",
"#Given\n",
"# properties of Freon-12 from appendix table C3\n",
"T1_Fr=-50\n",
"T2_Fr=-40\n",
"rou1_Fr=1.546*1000\n",
"rou2_Fr=1.518*1000\n",
"\n",
"#Calculation\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",
"# properties of helium from appendix table D3\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",
"#REsult\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": {}
}
]
}
|
