186
M. R. Zoolfakar and M. S. M. Khairul
Table 17.4 Result table
No
No of blades
with size (mm)
RPM Horizontal
distance (mm)
Vertical
distance (mm)
Depth of
measuring
device (mm)
Noise level
(dB)
1
2 blade 40 mm
300 100
C, 0
30
55.0
2
2 blade 40 mm
300 100
C, 0
60
55.3
3
2 blade 40 mm
300 100
C, 0
90
54.9
4
2 blade 40 mm
300 100
C, 0
120
54.7
5
2 blade 40 mm
300 100
L, 100
30
54.7
6
2 blade 40 mm
300 100
L, 100
60
55.0
7
2 blade 40 mm
300 100
L, 100
90
54.6
8
2 blade 40 mm
300 100
L, 100
120
54.5
9
2 blade 40 mm
300 100
R, 100
30
54.2
10
2 blade 40 mm
300 100
R, 100
60
54.8
11
2 blade 40 mm
300 100
R, 100
90
54.4
12
2 blade 40 mm
300 100
R, 100
120
54.3
13
2 blade 40 mm
300 200
C, 0
30
54.8
14
2 blade 40 mm
300 200
C, 0
60
55.1
15
2 blade 40 mm
300 200
C, 0
90
54.7
16
2 blade 40 mm
300 200
C, 0
120
54.5
17
2 blade 40 mm
300 200
L, 100
30
54.5
18
2 blade 40 mm
300 200
L, 100
60
54.8
19
2 blade 40 mm
300 200
L, 100
90
54.4
20
2 blade 40 mm
300 200
L, 100
120
54.3
21
2 blade 40 mm
300 200
R, 100
30
54.0
22
2 blade 40 mm
300 200
R, 100
60
54.6
23
2 blade 40 mm
300 200
R, 100
90
54.2
24
2 blade 40 mm
300 200
R, 100
120
54.1
25
2 blade 40 mm
300 300
C, 0
30
54.6
26
2 blade 40 mm
300 300
C, 0
60
54.9
27
2 blade 40 mm
300 300
C, 0
90
54.5
28
2 blade 40 mm
300 300
C, 0
120
54.3
.
.
.
.
.
.
.
.
.
.
.
.
.
.
1296 4 blade 60 mm 1200 300
R, 100
80
66.7