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OSTP Basic Pump Selection Design i�;K �,,, <br /> UNIVERSITY Y <br /> Minnesota Potlution Worksheet OF MINNESOTA �° '`� <br /> Corrtrol A enc --,.���- <br /> 1. PUMP CAPACITY Project ID: v 11.09.2Z <br /> Pumping to GraWty or Pressure Distribution: � �rarih Q� eresare Setection required 2 <br /> t. If pumping to graviry enter the gallon per minute of the pump: ��GPM (10-45 gpm) <br /> 2. If pumping to a pressurized distribuCfon system: 29.0 GPM <br /> (L!!M 11 of P�fSSAfC Dfttribut/on) oi trea ment sy em <br /> 6 pom�ol dnchxyc <br /> 2. HEAD REQUIREMENTS <br /> A. Elevation Difference 11 ft swcH`'"`"� <br /> between pump and point of discharge: ^'�'� E,�,,,,o,,;'� <br /> diNerence <br /> B. Dist�ibution Head Loss: ��ft -- <br /> , . _, <br /> � ----------------------------- ------------ <br /> C. Additional Head Loss: ��ft(due to special equipment,etc.) <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution H�ad Loss Flow Rate � P� e Diameter finchesl <br /> Gravity Distribution = Oft �----- - <br /> (GPM) -{� 1 1.25 1.5 2 <br /> Pressure Distribution based on Minimum Average Head 10 I 9.1 r-3.1 1.3 0.3 <br /> Value on Pressure Distribution worksheet: �2 12,g i 4.3 1.8 � 0.4 <br /> Minimum Avera e Head Distribution Haad Loss 14 17.0 I 5.7 2.4 0.6 <br /> 1ft Sft �6 21,g 7.3 3.0 0.7 <br /> 2ft 6ft �g q,� 3.8 0.9 <br /> 5ft 1 Oft 20 11.1 4.6 1.1 <br /> 25 � 16.8 6.9 1.7 <br /> D. 1.Suppty Pipe Diameter: 2.0 in 30 23.5 9.7 2.4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe Lengih: 75 ft 4p 16.5 4.1 <br /> E. Frittion Loss in Plastic Pipe per 100ft from Table I: 45 i 20.5 5.0 <br /> 50 I 6.1 <br /> Friction Loss= 2.23 ft per t00ft of pipe 55 � 7.3 <br /> 60 � 8.6 <br /> F. Detertnine Equivalent Plpe Lenqth from pump dixharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fittlng loss. Supply Pipe Length �p 11.4 <br /> (D.2) X 1.25=Equivalent Pipe Length 75 � ; 13.0 <br /> 85 16.4 <br /> 75 ft X t.25 = 93.8 ft 95 20.1 <br /> G. Calculate Suppfy Friction Loss by multiplying Friction Loss Per f00ft (Line E)by the Equiva(ent Pipe Lenqth (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 2.23 ft per 100ft x 93.8 ft - �00 - 2.1 ft <br /> H• Totat Hend requirement is the sun of the Elevation DiJJerence (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Frictlon Loss(Line G) <br /> 11.0 ft + 5.0 ft + �ft + 2.1 ft = 18.1 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 29 GPM(Line 1 or Line 2)with at least 19 feet of total head. <br /> Comme�ts: <br />