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� _. OSTP Basic Pump Selection Design r 7g �.k <br /> � UNIVERSITY : � <br /> Minnesota Pollution Worksheet OF MINNESOTA� ' "�`� <br /> Control A enc �-�- �- .�.,,��- <br /> 1. PUMP CAPACITY Project ID: v 11.09.22 <br /> Pumping to Gravity or Pressure DistribuHon: Q �rar�y QQ Remre Selection required 2 <br /> t. If pumpir►g to gravity enter the gatlon per minute of the pwnp: �GPM (f0-45 gpm) <br /> 2. if pumping to a pressurized distribution system: 29.0 GPM <br /> (tine 11 oj Pressure astributlon) <br /> a a men rys <br /> B point ot diuAarqe <br /> 2. HEAD REQUIREMENTS : °c; •� <br /> A. Etevation Difference �ft s�"`""�� <br /> between pump and point of discharsse: '�`� e�:" <br /> ann� <br /> B, Distribution Head Loss: �ft - - <br /> ----------------------------- -------------� <br /> C. Additional Head Loss: �ft(due to special equipment,etc.) <br /> Table LFriction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss Flow Rate P� e Diameter(inches) <br /> Gravity Distribution = Oft <br /> (GPM) 1 1.25 1.5 2 <br /> Pressure Distribution based on Minimum Average Head 10 9.1 3.t 1.3 0.3 <br /> Vatue on Pressure Distribution worksheet: �2 �2,g 4.3 1.8 0.4 <br /> Minimum Avera e Head Distribution Head Loss �� 17,0 5.7 2.4 0.6 <br /> 1ft 5ft 16 21.8 7.3 3.0 0.7 <br /> 2ft 6ft �g 9.1 3.8 0.9 <br /> 5ft 10ft 20 11.1 4.6 1.1 <br /> 25 16.8 6.9 1.7 <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 23.5 9J 2.4 <br /> 35 12.4 3.2 <br /> 2.Supply Pipe Length: 22 ft 4p 16.5 4.1 <br /> E. Friction Loss in Plastic Pipe per 100ft from Tabte I: 45 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 2.23 ft per t00ft of pipe 55 7.3 <br /> 60 8.6 <br /> p, Determine Equivalenr Pipe Length from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting toss. Suppiy Pi�Length �� ��.� <br /> (D.2) X 1.25=Equivalent Pipe Length 75 13.0 <br /> 85 16.4 <br /> 22 ft X 1.25 = 27.5 ft 95 20.] <br /> G. Calculate Supply Frittion Loss by muttiplyi�Friction Loss Per f00ft (Line E)by the Equi�rolent Pipe Lenqth (Line�and divide by 100. <br /> Supply Friction Loss= <br /> 2.23 R per 100ft X 27.5 ft + 100 = 0.6 ft <br /> H• Tota(Hend requirement is the sum of the Eleviotion Differerxe (Line A),the Distribution Head L.�s(Line B),Additional Head Loss(Line C),and the <br /> Supply Friction Loss(Line G) <br /> 7.0 ft + 5.0 ft + �ft + 0.6 ft = 12.6 ft <br /> 3. PUMP SELECTION <br /> A pump miut be selected to deliver at least 29 GPM(Line t or Line 2)with at least 13 feet of total head. <br /> Comments: <br />