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OSTP Basic Pump Selection Desi�n <br /> Minnesota Poliution UNIVERSITY <br /> Control A enc Worksheet OF MINNESOTA � _�``� <br /> 1. PUMP CAPACI7Y Project ID: v 11.09.22 <br /> Pumping to Gravity or Pressure Distribution: O�rav�ty �O Prenure Selectio�required 2 <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM (f0-45 3Pm) <br /> 2. If pumping to a pressurized distribution system: 16.0 GPM <br /> (Une 17 oJ Pressure D!s[ributlon) ���,p.,�����sy:��m <br /> a�b��,�oi d�s<n�.qe <br /> 2. HEAD REQUIREMENTS <br /> A. Elevation Difference 16 ft fr�'�e-�� r J _ <br /> nle�pipe <br /> between pump and point of discharge: � �i J E�e��t���:� <br /> � a�trP�e��Fl <br /> B. Distribution Head Loss: �ft � � ' , <br /> � ------•---------------------- ------------ <br /> C. Additional Head Loss: �ft(due to special equipment,etc.) <br /> Table I.Friction Loss in Plastic Pipe per t00ft <br /> Distribution Head Loss <br /> Gravity Distribution = Oft <br /> Flow Rate P�pe Diameter linchesl <br /> _ _----- ___ <br /> IGPMI 1 1.25 ' 1.5 2 <br /> , _ . _ __._ <br /> Pressure Distribution based on Minimum Average Head 1p 9,1 3,1 1.3 0.3 <br /> Value on Pressure Distribution Worksheet: �2 12.5 ' 4.3 1.8 0.-} <br /> Minimum Avera e Head Distribution Head Loss �.:} ' 17.0 ' SJ 2.4 0.6 <br /> �ft 5ft 16 ' 21.8 ' 7.3 3.0 OJ <br /> 2ft 6ft 18 ' 9.1 3.8 G.9 <br /> 5ft 10ft ZO I 11.1 -},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.-� <br /> 35 12.9 ;.2 <br /> 2.Supply Pipe Length: 150 ft 4p ' i , 16.5 4.1 <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: '�5 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 0.74 ft per 100ft of pipe 55 7.3 <br /> 60 8.6 <br /> F, Determine Equivolent Pipe Lenqth from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Supp(y Pipe Length �� �� � <br /> (D.2) X 1.25=Equivalent Wpe Length 75 1;.0 <br /> 85 ,, 16.-1 <br /> 150 ft X 1.25 = 187.5 ft 95 ' 20.t <br /> G. Calculate Supply Friction Loss by multiplying Friction Loss Per 100ft (Line E)by the Equivalent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 0.74 ft per 100ft X 187.5 ft + 100 = 1.4 ft <br /> H. Totol Head requirement is the sum of the Elevation Di(ference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the Suppl <br /> Friction Loss(Line G ) <br /> 16.0 ft + 5.0 ft + 5.0 ft + 1.4 ft = 27.4 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 16 GPM(Line 1 or Line 2)with at least 28 feet of total head. <br /> Commenu: <br />