Wind Energy Resources Potentials in Bangladesh :
TERNA Project :
TERNA Project was initiated by
Bangladesh Atomic Energy Commission (BAEC) and the Rural
Electrification Board (REB). Site selection took place in March
1996. In cooperation with GTZ of Germany, measurement systems were
installed and the collected data were analyzed as part of a training
course for REB-engineers.
TERNA Project has collected wind data in
four selected sites with the help of Rural Electrification Board (REB).
The sites were located at - (1) Patenga (2) Anwara (3) Teknaf and
(4) Feni. The project concluded that "the mean annual wind
velocities are to low" [GTZ, 2001]. The monthly average wind speed
at Patenga is shown in Table 3.5.
For comparison, the wind speed values of
BCAS and GTZ (whatever available) are shown in Table below. The
difference proves the point that wind-speed could vary considerably
even at a small distance.
Monthly average wind speed at Patenga [TERNA 1996]
Month
1995
1996
January
- --
February - -
March
6.7 -
April
7.2 -
May
7.7
8
June
8.1
6.9
July
8
8.4
August
7.4
3.5
September
6.8
3.9
October
6.2
3.2
November
4.4
2.6
December
4.2
2.2
Comparison of Wind Data of BCAS and GTZ
Month
Patenga
(GTZ)
(BCAS)
1995
1996
1996
1997
January - - -
3.25
February - - -
2.66
March
6.7 - -
3.13
April
7.2 - -
2.88
May
7.7
8 -
4.95
June
8.1
6.9
8.75
5.83
July
8
8.4
5.87
5.67
August
7.4
3.5
5.32
5.13
September
6.8
3.9
3.36
-
October
6.2
3.2
3.2
-
November
4.4
2.6
2.61 -
December
4.2
2.2
2.97 -
Summary of Wind Data :
STATION
: PATENGA (Sensor Height : 25m)
Name
of Month
Monthly
Mean Wind Speed (m/s)
Standard
Deviation (m/s)
Peak Wind
Speed(m/s)
(Date/time)
Lull
Period
(Hours)
Coefficient of variation
Prevailing wind direction
July ‘96
5.87
0.67
16.92
(11/0230)
9.77
0.13
SE
August’96
5.32
0.62
21.08
(6/0840)
28.67
0.13
SE
September’96
3.36
0.48
14.83(27/1300)
111.00
0.18
SE/NW
October’96
3.20
0.55
22.33(29/1300)
94.50
0.20
NE
November’96
2.61
0.35
8.17(6/1820)
50.17
0.15
NE
December’96
2.97
0.37
8.58(3/1410)
21.50
0.14
NE
January’97
3.25
0.39
12.33(21/2330)
20.17
0.14
NE
February’97
2.66
0.34
11.5(6/2200)
124.80
0.15
NE/E
March’97
3.13
0.40
40.25(22/0450)
256.67
0.12
SW
April’97
2.88
0.45
27.75(22/1720)
210.50
0.18
E/SW
May’97
4.96
0.63
51.08(18/1900)
101.33
0.16
S
June’97
5.83
0.75
23.17(1/0650)
50.50
0.17
S/SE
July’97
5.67
0.76
19.38(29/1300)
45.83
0.17
SE
August’97
5.13
0.65
20.67(4/1010)
32.23
0.14
SE
Annual
Average
3.84
0.50
-
89.96
0.15
-
Name
of Month
Patenga
Cox’s Bazar
Kutubdia
Teknaf
Noakhali
Kuakata
Char Fassion
July ‘96
76.78
65.09
-
70.81
-
-
-
August’96
65.77
63.66
-
57.97
60.74
81.14
59.46
September’96
32.82
34.14
36.89
34.49
25.93
45.14
25.3
October’96
25.07
36.18
43.64
31
16.53
18.01
25.43
November’96
6.62
24.54
35.49
18.84
5.35
5.53
Lost
December’96
12.86
19.76
40.3
16.49
5.22
21.26
28.96
January’97
22.78
25.96
41.73
24.53
6.85
27.15
23.63
February’97
17.41
20.18
35
21.9
14.58
29.18
21.75
March’97
32.86
28.52
40.66
26.39
24.13
55.98
35.78
April’97
27.94
18.70
31.37
15.23
24.05
56.02
37.22
May’97
58.42
45.56
61.07
33.40
48.48
78.83
55.76
June’97
73.84
59.56
79.14
40.49
64.70
87.94
70.53
July’97
70.45
60.37
79.12
48.97
63.75
90.46
49.55
August’97
68.67
53.29
66.51
50.99
43.73
-
55.49
September’97
-
30.67
45.05
16.11
27.62
-
32.20
Annual
Average
42.31
39.12
48.92
36.26
33.20
66.29
45.39
Percentage Frequency of Wind Speed
Above 4m/s
Name
of Month
Patenga
Cox’s Bazar
Kutubdia
Teknaf
Noakhali
Kuakata
Char Fassion
July ‘96
76.78
65.09
-
70.81
-
-
-
August’96
65.77
63.66
-
57.97
60.74
81.14
59.46
September’96
32.82
34.14
36.89
34.49
25.93
45.14
25.3
October’96
25.07
36.18
43.64
31
16.53
18.01
25.43
November’96
6.62
24.54
35.49
18.84
5.35
5.53
Lost
December’96
12.86
19.76
40.3
16.49
5.22
21.26
28.96
January’97
22.78
25.96
41.73
24.53
6.85
27.15
23.63
February’97
17.41
20.18
35
21.9
14.58
29.18
21.75
March’97
32.86
28.52
40.66
26.39
24.13
55.98
35.78
April’97
27.94
18.70
31.37
15.23
24.05
56.02
37.22
May’97
58.42
45.56
61.07
33.40
48.48
78.83
55.76
June’97
73.84
59.56
79.14
40.49
64.70
87.94
70.53
July’97
70.45
60.37
79.12
48.97
63.75
90.46
49.55
August’97
68.67
53.29
66.51
50.99
43.73
-
55.49
September’97
-
30.67
45.05
16.11
27.62
-
32.20
Annual
Average
42.31
39.12
48.92
36.26
33.20
66.29
45.39
Percentage Frequency of Wind Speed
Above 5m/s
Name
of Month
Patenga
Cox’s Bazar
Kutubdia
Teknaf
Noakhali
Kuakata
Char Fassion
July ‘96
61.47
50.12
-
57.78
-
-
-
August’96
49.24
45.16
-
42.07
40.53
71.09
50.30
September’96
16.20
20.90
17.70
21.06
15.67
31.13
18.24
October’96
14.78
19.78
24.96
20.88
10.73
14.72
16.47
November’96
0.25
8.68
10.30
8.01
0.53
0.51
Lost
December’96
2.13
10.57
21.10
8.29
0.40
2.49
5.97
January’97
8.18
14.61
22.47
15.41
2.04
3.27
4.50
February’97
6.10
11.43
16.47
14.09
6.45
7.69
9.40
March’97
22.00
20.05
25.18
18.71
15.95
38.26
24.73
April’97
15.76
11.69
17.20
9.07
14.07
41.37
24.07
May’97
42.70
34.32
42.72
24.35
35.30
67.74
45.92
June’97
61.11
47.18
66.41
28.15
51.20
79.49
59.07
July’97
54.70
48.36
66.51
38.64
48.63
81.35
51.34
August’97
49.35
41.20
53.18
39.16
34.79
-
45.77
September’97
-
18.70
26.94
11.32
17.22
-
21.99
Annual Average
24.47
26.85
31.63
23.80
20.97
36.59
29.06
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