 |
 단위환산표 (Unit Conversion Table) |
feet x 0.3048 = m
gpm x 0.2271 = ㎥/h
pound x 0.4536 = kg
Hp x 0.7457 =kw
Psi x 0.0703 =kg/㎠
kg/㎠ x 98.07 = kPa
℃ = 5/9 x (℉-32)
ft 3 x 0.02832 = ㎥
gallon x 0.003758 = ㎥ |
m x 0.3048 = feet
㎥/h x 4.403 = gpm
kg x 2.205 = pound
kw x 1.341 = Hp
kg/㎠ x 14.223 = psi
kPa x 0.01097 = kg/㎠
℉ = (1.8x℃)+32
㎥ x 35.31 = ft 3
㎥ x 264.2 = gallon | |
| 소형펌프의 효율 (KS B 7501) Efficiency of small Pump |
|
|
| 토출량 (㎥/min) Quantity of Delivery |
토출량
(㎡/min) |
0.1 |
0.15 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.8 |
1.0 |
1.5 |
2.0 |
3.0 |
4.0 |
| A효율(%) |
37 |
44 |
48 |
53.5 |
57 |
59 |
60.5 |
63.5 |
65.5 |
68.5 |
70.5 |
73 |
74 |
| B효율(%) |
30.3 |
36.2 |
39.4 |
43.9 |
46.7 |
48.4 |
49.6 |
52.1 |
53.7 |
56.2 |
57.8 |
59.9 |
60.7 | |
| 구경별 관손실 도표 (Friction loss of pipe by diameter) |
| 표준 구경펌프 최대 유량선 (Maximum flow rate of pump with standard diameter) |
|
|
| 흡입구경과 수량범위 (Diameter of suction and range of water quantity) |
흡입구경
Dlanerer of
suction |
수량범위(㎡/min)
Ranhe of
Water quantity |
흡입구경
Diameter of
suction |
수량범위(㎡/min)
Ranhe of
Water quantity |
| 40mm |
~0.22 |
100 |
0.8~2.5 |
| 50 |
0.12~0.40 |
125 |
1.0~4.0 |
| 65 |
0.25~0.80 |
160 |
2.0~6.3 |
| 80 |
0.50~1.60 |
200 |
3.15~12.5 | |
| 60Hz |
| 고도에 대한 표준대기압Standard atmospheric pressure by altitude |
해발고
Aititude avobe
the sea level |
대기압
Atmospheric pressure |
평지에서 기능흡입
양정의 감소량(m)
Reduction of suction
Head(m) |
| m |
mmHg |
수주(m) |
| 0 |
760 |
10.33 |
0 |
| 250 |
740 |
10.06 |
0.3 |
| 500 |
720 |
9.78 |
0.6 |
| 750 |
699 |
9.50 |
0.85 |
| 1000 |
678 |
9.22 |
1.1 |
| 1250 |
658 |
8.95 |
1.4 |
| 1500 |
634 |
8.62 |
1.7 |
| 1750 |
617 |
8.4 |
1.95 |
| 2000 |
596 |
8.1 |
2.2 |
| 3000 |
526 |
7.15 |
3.2 |
| 4000 |
462 |
6.28 |
4.1 | |
| 액온도에 따른 안전한 흡입조건Suction conditions safe according to the temperature of fluid |
| 급수온도(℃) |
비 중 |
포화중기압력 |
운전상 안전한
펌프 흡입압력 |
0
20
40
60
70
75 |
0.999
0.998
0.992
0.983
0.978
0.975 |
0.0062
0.024
0.075
0.203
0.318
0.393 |
7.0
6.5
5.0
3.0
1.5
1.0 |
흡입양정
(m)
suction heed |
80
85
90
95
100
110
120
130
140
150
160
180
200 |
0.972
0.969
0.965
0.962
0.958
0.951
0.943
0.935
0.926
0.917
0.907
0.887
0.865 |
0.483
0.589
0.715
0.862
1.03
1.46
2.03
2.76
3.69
4.86
6.3
10.2
15.9 |
0.0
0.1
0.25
0.4
0.5
1.0
1.5
2.3
3.3
4.8
6.4
10.5
16.8 |
입입압력
(㎤/㎏)
Inlet pressure | |
