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Pt1Mp SEL.ECTION PROCfiDURE <br /> A. Determine puatp capadty: <br /> Gravity Diatribution <br /> 1. Minimurn suggested is 20 gpm <br /> Z. MaXimual Suggested is 45 gpII1 Pertoratlon DL a in GYM <br /> Had Perforation diameter ' <br /> Pressure Distibution feet irchea <br /> 3.a. Select number of perforated laterals 3 7 32 1 4 <br /> b. Select perfontion spacing= 3 fee� �.oa o.56' o.�a <br /> c. Subtract 2 it from the rock layer length. �s o.�9 0.90 <br /> 55 .2�,a�_fee� . 20� o.so i.oa <br /> 1lad�V�r I�tl� <br /> d. Deteratiine the nualber of spaces between perforat[ons. �Use 3A foot dngk homa. <br /> �� �,�g�g.��{.+�ft��„2_apacea b Uu 20 het tor utythiag else. <br /> e. �spaces+1 ��perforationa/lateral <br /> f. Multiply perfontlons per lateral by number of laterals tc ,�,� ', <br /> get total nuaiber of perforations. � x ��_�perfontiona. <br /> g. � x�_` � BPm. <br /> SELECTED PUMP CAPACITY , 4 D gpm <br /> B.Determine head requirea�enb: <br /> 1. Flevation difference between pump and point of discharge. <br /> `d feet <br /> 2. If pumping to a pressure distr�ution system,five feet for pressure s°"°"m'""'r`@' <br /> required at maaifold if gravity system,zero. �� <br /> ��f eet '°ti'a�.�.'�'' <br /> 3. Friction loss <br /> a Enter friction loss table with gpm arid pipe diameter. �,r„b„�„.,a <br /> Read friction loss in feet per 100 feet fzom table(F-14). a�' ..._,__ ., , <br /> F.L= ���h/100 ft of pipe ' ,, <br /> b. Determine total pipe length hom pump to discharge ..................................... ; `�o <br /> poin� Esttmate by adding ZS percent to pipe leagth for fitting <br /> loss,or use a Htttng losa chart(F-15_�eet). <br /> Equivalent pipe length-1.25 tiaies pipe length s . • � <br /> _�,'�.x 1.25=�feet Friction Loss in Plastit Pi e <br /> c. Calculate total friction loss by multiplying <br /> frictlon loss in ft/100 h by equivnlait pipe length. � Nominal <br /> Total friction loss= u +100= feet pipe dia. <br /> �x�' � �'OW R3� l�.w r�» .3� <br /> 4. Total head required is the suat of elevation difference, �m <br /> special head requiremenb,utd total friction loss. <br /> 20 247 0.73 0.11 <br /> `� +��+ � 2S 3.73 1.11 0.16 <br /> ' (1) (2) (3c) 30 .5.23 1.55 0.23 <br /> 35 6.96 206 0.30 <br /> 40 8.91 264 0.39 <br /> TOTAL HEAD �feet 4S 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> C. Pump selection bo s.bo o.s2 <br /> 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> 1. A pump must be s'elected to:deliver at:least � <br /> �}J - gpm (Step A)..�nth�at least .�:,f:_feet of total hea�i (Step B). <br /> � <br />