— David Wagner 2007/06/29 15:40

• Hose Pressure Drop [tbl 9-6]: 2.4 psig
• Manifold Pressure Drop: 2.5 psig
• Pressure at Outlet: 110-(90+2.4+2.5)=15.1 psig
• Loss/1000': 15.1/1400 → 10.8 psig/1000'
• Flow: 3*110*1.07=353 cfm
• Drop of 2” Pipe: 9.4 < 10.8

Submersible pumps are usually used when a great deal of suction lift would otherwise be required. Jet pumps and air-lift pumps may also be used.

• 100' of 3” hose; Q=200 gpm
• SH=10+20=30' [tbl 9-8] → 9.6/100' * 100' = 9.6 ft=FH
• TH=SH+FH = 30+9.6=39.6' [tbl 9-9]→

• SH: 50' [fig 9-4]; Elbows: 3*11'=33'; CV: 1*25'; FV: 70'
• Pipe: 300'+33+25+70=468'; 4”@280gpm [tbl 9-9]: 5.4'/100'*400'=25.3'
• Hose: 4.3'/100'*20'=0.8'
• FH: 25.3+0.8=26.1'; TH=50+26.1=76.1'

• 4*200/.95=842 cfm
• 4” Pipe: 1500'
• Gate Valve: 2*2.3'=4.6'
• Elbows: 6*11'=66

Equivalent Length of 4” Pipe: 1570.6'

• Pipe: -1570.6'*1.6/1000'= -2.5 psig
• Manifold: -3 psig

Pressure at Manifold: 100-5.5= 94.5 psig

• 1.25” hose: -1.048*100'*25.9/1000'= -2.7 psig

Pressure at each dirll=94.5-2.7=91.8

• 2*800+1*1100+5*100=3200 cfm
• 4376

Air compressor capacity is rated as as the STP volume of air the compressor will deliver at as specified pressure.

The pressure loss in a pipeline decreases as the initial pressure increases.