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臺灣農藥噴頭與飄散研究
111
表一、
5
種農民常用之黃銅圓錐農藥噴頭於不同壓力下之霧滴粒徑分布及流量，
Dv(10)
、
Dv(50)
及
Dv(90)
表示
10%
、
50%
及
90%
之霧滴其粒徑小於此的粒徑大小
Table 1.
Droplet size and flow rate of five brass cone spray nozzles. Dv(10), Dv(50) and Dv(90)
values indicate the size that 10%, 50%, and 90% of droplets were below, respectively
Code
A
B
C
Nozzle type
1 Hole-point nozzle 5 Hole vegetable
nozzle
1 Hole-outer thread
nozzle
Nozzle appearance
Appearance label or hole diameter
1.35 mm
1.20 mm
1.95 mm
Droplet size (
μ
m, 2 kg/cm
2
)
Dv(10)
85.95 ± 1.74
82.23 ± 0.81
55.84 ± 0.55
Dv(50)
148.5 ± 2.71
136.5 ± 0.68
108.3 ± 0.61
Dv(90)
266.1 ± 3.93
228.8 ± 0.10
201.6 ± 1.37
Flow rate (L/min) 2 kg/cm
2
0.97 ± 0.01
1.74 ± 0.00
0.80 ± 0.00
Droplet size (
μ
m, 7 kg/cm
2
)
Dv(10)
73.71 ± 0.88
68.43 ± 0.52
46.51 ± 0.28
Dv(50)
121.9 ± 1.41
108.03 ± 0.29
88.01 ± 0.69
Dv(90)
206.7 ± 1.77
170.30 ± 0.53
157.8 ± 2.08
Flow rate (L/min) 7 kg/cm
2
1.89 ± 0.00
2.62 ± 0.07
1.29 ± 0.02
Droplet size (
μ
m, 10 kg/cm
2
)
Dv(10)
56.48 ± 3.56
81.91 ± 1.71
45.14 ± 0.91
Dv(50)
101.1 ± 3.29
113.4 ± 0.64
87.46 ± 1.00
Dv(90)
181.8 ± 3.20
155.4 ± 1.16
160.5 ± 2.65
Flow rate (L/min) 10 kg/cm
2
2.20 ± 0.01
3.20 ± 0.03
1.59 ± 0.01
Droplet size (
μ
m, 20 kg/cm
2
)
Dv(10)
55.99 ± 4.07
82.99 ± 2.12
1)
43.74 ± 1.33
Dv(50)
92.16 ± 3.94
119.3 ± 2.49
1)
88.87 ± 1.71
Dv(90)
152.0 ± 2.72
168.5 ± 2.16
1)
169.8 ± 4.14
Flow rate (L/min) 20 kg/cm
2
3.06 ± 0.00
4.84 ± 0.07
2.90 ± 0.04