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� <br /> OSTP Basic Pump Selecti n Design , <br /> UNIVERSITY x <br /> Minnesota Pollution Worksheet OF MINNESOTA���c <br /> Cantrol A enc ��:.:;_-;<;: ,�,�� <br /> t. PUMP CAPACITY Project 10: v 19.09.22 <br /> Pumping to Gravity or Pressure Distributio�: Q rrarRy QQ Resare ��������� 2 <br /> 7. If{wmping to gravity enter the galton per minute of the pump: GPM (10-45 gpm) <br /> 2. If pumping to a pressurrzed distribution system: 36.0 GPM <br /> (Line 1 f of Preaure Distributlon) <br /> � <br /> a rw:n a anw.�e <br /> 2. HEAD REQUIREMENTS <br /> A. Etevati�Difference 22 n y�,�""`� <br /> between pixnp and point of discharge: � i F�„aa,,,,'=-- <br /> tt----�� 1... f � � <br /> B. Distn�bution He�loss: �{t _. i <br /> ---.,_ _. � <br /> � _-.._ - ��----------------------------- ------------- <br /> t. Additiaia!Head Loss: �ft{due to special equipmeni,etc.) <br /> Tabte I.FricYion Loss in Plas#ic Pipe per 100ft <br /> Distribution Head Loss ` pi Dlameter(inches) <br /> Gravity Distribution = Oft Row Rdte C___.___� <br /> ---�------- <br /> (GPM) ` 1 ' 7.25 1.5 1 2 <br /> Pressure Distribution based ore Minimum Average Head 10 � 9.1 i 3.7 1.3 0.3 <br /> value on Pressure Distribution worksheet. �2 � �2,$ � 4.3 1.8 � 0.4 <br /> Minimum Avera e Head ��stributi+on Head Loss 14 17A � 5.7 2.4 i 0.6 <br /> 2ft 6ft 1b � 21.8 j 7.3 3.0 � 0.7 <br /> 18 � � 9.1 t 3.8 � 0.9 <br /> 5ft 1�Y 20 � � 11.1 4.6 E 1.1 <br /> 25 ; 76.8 6.9 ' 1.7 <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 � ` 23.5 9.7 � 2.4 <br /> 2.SupplY APe�3�= 200 ft 35 ( � , 12.9 ! 3.2 <br /> 40 f 16.5 � 4.1 <br /> E. Fridion Loss in Piastic Pipe per 100ft from Tabte i: 45 � 20.5 ; 5_0 <br /> 50 � 6.1 <br /> friction Loss= 3.32 ft per 100ft of pipe 55 ; 7.3 <br /> GO I 8.6 <br /> p, Determine Equivalent Pipe Length from{wmp dixharge to soil dispersat area discha 65 � <br /> point. Estimate by addir�25%to suppty pipe length for fitting loss. Supply Pipe Le � � ��� <br /> "g 70 11.4 <br /> (D.2) X 1.25=EquivatenY Pfpe tertgth 75 ! <br /> , , i 3.0 <br /> 2� ft X 1.25 = 250.0 ft 95 � � 15.4 <br /> f 20.1 <br /> G. Caiculate Supp(y Friction Los�by muttiplyir�frictio»Loss Per f00ft (Line E)by tt�E imient Pipe tength {Li�F3 a�ci divide by 100. <br /> Suppiy Friction Loss= <br /> 3.32 ft per 10oft x 250.0 ft - 1 = 8.3 ft <br /> H• Toto!Head requiremer�Y u the sun of the Elevation Differe»ce (Line A),the ' Head Loss(Line S),Additional Head Loss{Line C),and the <br /> Supply Friction Loss(Line G) <br /> 22.0 ft + 5.0 ft � ��ft + 8.3 ft = 35.3 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36 GPM(Line t or Line �th ac�ast 36 r�r or cout nead. <br /> c«„menu: <br />