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Diffusion of Point-Source Pollution Using A Gaussian Distribution

This document contains data on the diffusion of point source air pollution from a stack. It includes the stack characteristics, atmospheric conditions, estimated ground-level pollution concentrations at different distances from the source, and lateral and vertical dispersion coefficients used to model the pollution plume dispersion under varying stability categories. Graphs generated from the data show the predicted decreasing pollution concentrations with increasing distance from the source and changing based on wind speed and direction.

Uploaded by

Ilham Dwiyanto Emzar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as XLS, PDF, TXT or read online on Scribd
52 views2 pages

Diffusion of Point-Source Pollution Using A Gaussian Distribution

This document contains data on the diffusion of point source air pollution from a stack. It includes the stack characteristics, atmospheric conditions, estimated ground-level pollution concentrations at different distances from the source, and lateral and vertical dispersion coefficients used to model the pollution plume dispersion under varying stability categories. Graphs generated from the data show the predicted decreasing pollution concentrations with increasing distance from the source and changing based on wind speed and direction.

Uploaded by

Ilham Dwiyanto Emzar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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343193011.

xls

A
B
C
D
E
F
G
DIFFUSION OF POINT SOURCE POLLUTION
Stack height (m)
Stack diameter (m)
Emission rate (g/s)

30
2
10

Atmospheric
Condition
Category:
Stack
Effect
Ht (m)
222.2
94.05
68.43
57.45
51.35
47.47
44.78
42.81
41.3
40.11

1 = Very Unstable
2 = Moderately Unstable
3 = Slight unstable

5
200
20
4 = Neutral
5 = Somewhat stable
6 = Stable

Estimated Concentration of Ground-Level Pollution (mmg/m3)


on Plume Centerline at Selected Distances (km) from Source
0
0.5
0.8
1.5
3
5
10
20
35
60
0
0
0
0
3
9
13
9
6
4
0
0
8
32
31
21
10
5
3
2
0
8
34
45
26
15
7
3
2
1
0
21
47
42
21
12
5
2
1
1
0
31
50
37
18
9
4
2
1
1
0
37
50
33
15
8
3
1
1
0
0
39
47
29
13
7
3
1
1
0
0
40
44
26
11
6
2
1
1
0
0
40
42
24
10
5
2
1
0
0
0
40
39
22
9
5
2
1
0
0

100
2
1
1
0
0
0
0
0
0
0

DIFFUSION OF POINT-SOURCE POLLUTION USING A GAUSSIAN DISTRIBUTION

60

60

0.5

50

0.8

40

1.5

30

20

10
0
1
3
5
7
9
11
13
15
17
19

Gas exit velocity (m/s)


Gas exit temperature (C)
Ambient Temperature

3D Surface Plot

C oncentration

10
20
35
60
100
Distance dow nwind

Concentration (mmg/m3)

Wind
Velocities
Wind
1
3
5
7
9
11
13
15
17
19

0
0.5
0.8
1.5
3
5
10
20
35
60
100

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

50

3
5

40

7
9

30

11

20

13
15

10

17

19
0

0.5

W ind velocities

0.8

1.5

10

Distance from source (km)

SCRATCH AREA
473
gas exit temperature in degrees Kelvin
293
ambient temperature in degrees Kelvin
19
} f0
87
} x0
192
} Numerator for H(eff)
0
} Calcuation for T(eff)

Page 1

20

35

60

100

343193011.xls

A
B
C
D
E
F
G
54 Lateral and Vertical Disperson Coefficients for
Column
1
2
3
4
5
6
55
Lateral
1
0
107
169
56
2
0
78
123
57 Dispersion
3
0
54
85
58 Coefficients
4
0
39
62
59
5
0
29
46
60
6
0
20
31
61
62
39
62
63 Lateral Dispersion Lookup 0
64
Vertical
1
0
100
160
65
2
0
60
96
66 Dispersion
3
0
38
59
67 Coefficients
4
0
23
32
68
5
0
13
19
69
6
0
7
10
70
71
0
23
32
72 Vertical Dispersion Looku

H
Each
7
308
224
154
112
84
56

I
J
K
L
Stability Category
8
9
10
11
579
898 1556 2540
421
653 1131 1848
289
449
778 1270
210
327
566
924
158
245
424
693
105
163
283
462

112

210

327

566

924

300
180
105
50
31
17

600
360
190
77
47
25

1000
600
283
103
60
32

2000
1200
462
150
75
40

4000
2400
716
216
86
46

50

77

103

150

216

12
3630
2640
1815
1320
990
660

13
4989
3628
2495
1814
1361
907

14
6633
4824
3317
2412
1809
1206

1320

1814

2412

7000 12000
4200 7200
990 1331
287
377
91
95
49
51
287

377

Page 2

20000
12000
1746
488
97
52
488

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