인테이크 basin 의 길이 산정
- 최초 등록일
- 2011.06.13
- 최종 저작일
- 2011.01
- 5페이지/
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- 가격 1,000원
소개글
취수 시설의 settling basin 의 길이 산정하는 계산서
목차
1. design condition
2. check for low water level in intake basin
본문내용
1. Design Condition
1.1 Water Level
H.W.L EL.(-) 1.1
L.W.L EL.(-) 3.1
1.2 Flow Rate
- High Water Level : Q = m3/hr
- Low Water Level : Q = m3/hr
1.3 settling basin bottom elevation
EL(-) 12.0
2. Check for Low Water Level in Intake Basin
- Total Q = m3/hr
- Flow rates per Pipe (Qp ) : 3 lines operation
Qp = m3/hr/line = m3/sec/line
- Flow rates at Intake Basin (Qb ) : 3 bay operation
Qb = m3/hr/bay = m3/sec/bay
2.1.1 Calculation for Head Loss
1) Head Loss at Intake Tower
① Horizontal Flow Area
A = ( 2.85 x 4.0 + 3.2 x 2.0 ) x 1.8 = m2
Vh = Q/A = 0.35 m/sec : Horizontal Velocity
② Vertical Flow Area
A = ( 6.3 x 3.0 ) = m2
Vv = Q/A = 0.59 m/sec : Vertical Velocity
∴ Total Head Losses at Intake Tower
=
=
=
where, f1 : cofficient of entrance loss(0.5)
f2 : cofficient of exit loss (1.0)
f3 : cofficient of bend(90˚, 0.99)
2) Friction Loss at C.W Pipe
hf = f x ℓ/D x v2/2g
where, g : 9.8 m/sec2
120,000
120,000
40,000
120,000
0.5x(0.332/(2x9.8)) + 1.0x(0.562/(2x9.8)) + 0.99x(0.562/(2x9.8))
0.035
11.11
32.04
18.90
f1x(Vh2/2g) + f2x(Vv2/2g) + f3x(Vv2/2g)
40,000 11.11
2/
참고 자료
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