Laserfiche WebLink
_;� OSTP Basic Pump Selection Design .�,�� <br /> Mlnnesota Pollution Worksheet UN I V ERS ITY <br /> Control A enc OF MINNESOTA 'L1.�" <br /> 1. PUMP CAPACITY Project ID: <br /> Pumpi�g to Gravity or Pressure Distribution: C Graviry Q aressure Selectfon required <br /> t. If pumping to gravity enter the gatlon per minute of the pump: �GPM /10� 45 gpml <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> 3. Enter pump descnption: <br /> o,�,H�,,,..,�,Y,�.m <br /> . HEAD REQU�REMENTS a��,�o+a.ma.y� <br /> A. Elevation Difference ( 9�ft �„ <br /> `--- �w» <br /> between pump and point of discharge: <br /> �� , ,.. <br /> �-- , e��: <br /> B. Qistnbution Head Loss: �5 �ft <br /> C. Additionat Nead Loss: ��fi(due to special equipment,etc) � ` ---------•---------------- ---•-•------- <br /> r--- <br /> � Table I.Friction Loss in Plastic Pipe per 100ft <br /> Dist�ibution H�ad Loss . _ _ <br /> Gravity Distribution = oft Flow Rate � P�pe Diameter Iinches{ <br /> IGPMI i t } 1.25 I 1.5 2 <br /> � - � -_ _ <br /> ressure Distributio� based on Mtnimum Average Head 10 9.1 3.1 1 1,3 0.3 <br /> Vatue on Pressure Distribution Worksheet: i <br /> 12 � 12.8 � 4.3 ( 1.8 � 0.4 <br /> Mintmum Avera e Head Distribution Head Loss �4 ! 17.0 ! 5J 2.4 0.6 <br /> tft Sft 16 21.8 7.3 3.0 � OJ <br /> 2ft 6ft �g � � 9.1 3.8 ; 0.9 <br /> 5ft 10ft Zp � � 11.1 4.6 j 1.1 <br /> 25 i 16.8 b.9 i J <br /> D. 7. Suppty Pipe Diameter. 2.0 in 30 ; 23.S 9.7 2.4 <br /> 35 ; 12.9 3.2 <br /> 2. Supply Pipe Length: 138 ft qp I 16.5 � 4.1 <br /> E. Friction Loss in Plastic Pipe per t00ft from Table I: 45 ' 20•5 5.0 <br /> 50 � 6.1 <br /> Fric[io�Loss= 3.32 ft per t0pft of pipe 55 � 7.3 <br /> � ' $.6 <br /> p, Determine Equivalent Pipe Length from pump discharge to soit dispersat area discharge 65 I 10.0 <br /> point. Estimate by adding 25%to suppty pipe length for fitti�g toss. Supply Prpe Length �p I 11.4 <br /> (D.1) X 1.25=Equivalent Pipe Length 75 '' 13.0 <br /> t38 ft X t.25 = 172.5 ft 85 ' ' 16.4 <br /> 95 20.1 <br /> G. Catculate Supply Frrction toss by multiplying Friction Loss Per 10pft (line E)by the Equivolent Pipe Length (Line P)and divide by 100. <br /> Supp(y Friction Loss= <br /> 3.32 ft per 100ft X 172.5 ft - 100 = 5.7 ft <br /> H• To[al Heod requirement is the sum of the Eleva[ion Difference {Line A),the Distnbution Head Loss(Line 6),Additional Head loss(Line C),and <br /> the Supply Friction Loss(Line G ) <br /> 9.0 ft * 5.0 ft + ��ft - 5.7 ft = 19.7 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36.� GPM�Line 1 or Line 2)with at least 19.7 feet of total head. <br /> �omments: <br />