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.S.GALLONS PER MINUTEPUMPING CLEAR COLD WATER SP.GR.1.0TURBINE PUMPRPM18 DC1770FOR 1 STAGE MULTIPLY HEAD & EFF.BY.97Johnston Pump Company IMPELLER - BRONZEBOWL - CAST IRONFOR 2 STAGES MULTIPLY HD.& EFF.BY.99VIT.ENAMELEDGlendora, California 91740CURVE SHEET NO.DATE2-9-78ESTABLISHED 1909EC-2529(Courtesy of Johnston Pump Co.)© 2000 by CRC Press LLCAPERIMP.IMP.IMPELLER PART NO.4808THRUST CONSTANT 41PUMP SHAFT DIAM.FEET7"T SUCTION IMPELLERSTAGE DIA.EXIT2INCHESIMPELLER PATTERN NO.2811WR2 22.2LB.FT2/STAGEN.P16.S.H.REQUIREDSUBMERGENCE REQ'D OVER BOTTOM OF BELL TO PREVENT VORTEXES 48"50NPSH402753"15302504FEET1"15202258SUBMERGENCESection 4BTOT1"A7578OVER BELLL200148010BOWL28385175HEAD8615085PAGE 10083 801257810075March 10, 1975BRAKE HORSEPOWERPERSTAGE30020010010002000300040005000600070008000PERFORMANCE BASED ON MULTISTAGE TESTSU.S.GALLONS PER MINUTEPUMPING CLEAR COLD WATER SP.GR.1.0TURBINE PUMPRPM20 CC1775FOR 1 STAGE MULTIPLY HEAD & EFF.BY0.99Johnston Pump CompanyIMPELLER - BRONZEBOWL - CAST IRONFOR 2 STAGES MULTIPLY HD.& EFF.BY1.00COATED.Glendora, California 91740CURVE SHEET NO.DATE1-31-75ESTABLISHED 1909EC-0334(Courtesy of Johnston Pump Co.)Dia.In.(mm)© 2000 by CRC Press LLCBOWL40NPSH REQUIRED10HEAD PER ST15020511.8370AGE40(300)758012511.2584FEETMETERS(286)85.5841003010.63(270)80757570BRAKE HORSEPOWER PER ST20501025100METERSFEETAGE50010001500200025003000350040004500USGPMM3/HR.02004006008001000PERFORMANCE BASED ON PUMPINGCHANGE IN EFF.THRUST FACTORS AT BEP.RPMPUMPCLEAR WATER BELOW 85 F.WITH LISTEDSTAGESPOINTSIngersoll-DresserIMPELLER LBS/FT KG/M177515H277MATLS.COLUMN LOSSES NOT INCLUDED1-3STANDARD 12.017.9ENCLOSEDCURVE NO.BOWL - CAST IRON - LINED2-1.5PumpsBALANCE------IMPELLEREC - 23923-1IMPELLER - BRONZEEYE AREA - 34.4 SQ.IN.NS = 3020© 2000 by CRC Press LLCDia.In.(mm)BOWL1755015 NPSH REQUIREDHEAD PER ST11.8310(300)1502511.255AGE40(286)75 78 80 8212584FEETMETERS8684 821003010.7580(273)787575BRAKE HORSEPOWER PER ST20501001050METERSFEETAGE500100015002000250030003500USGPMM3/HR.0100200300400500600700PERFORMANCE BASED ON PUMPINGCHANGE IN EFF.THRUST FACTORS AT BEP.RPMPUMPCLEAR WATER BELOW 85 F.WITH LISTEDSTAGESPOINTSIngersoll-DresserIMPELLERLBS/FT KG/M177515M185MATLS.COLUMN LOSSES NOT INCLUDED1-1.5STANDARD8.5712.8ENCLOSEDBOWL - CAST IRON - LINED2-1PumpsBALANCE------IMPELLERCURVE NO.3EC - 2377IMPELLER - BRONZEEYE AREA - 26.9 SQ.IN.NS = 2380© 2000 by CRC Press LLCDia.In.(mm)5015 NPSH REQUIREDBOWL10HEAD PER ST1502545516.94(430)40125AGE16.00FEETMETERS35(406)15.00100 (381)7630808314.008525(356)8575 13.008320(330)868076BRAKE HORSEPOWER PER ST155010METERSFEET2510050AGE500100015002000250030003500400045005000USGPMM3/HR.010020030040050060070080090010001100PERFORMANCE BASED ON PUMPINGCHANGE IN EFF.THRUST FACTORS AT BEP.RPMPUMPCLEAR WATER BELOW 85 F.WITH LISTEDSTAGESPOINTSIngersoll-Dresser IMPELLER LBS/FT KG/M 118020KKHMATLS.COLUMN LOSSES NOT INCLUDED12STANDARD19.729.3ENCLOSEDBOWL - CAST IRON - LINED21PumpsBALANCED10.014.9 IMPELLER CURVE NO.3EC - 1362IMPELLER - BRONZEEYE AREA - 60.5 SQ.IN.NS = 2740© 2000 by CRC Press LLCDia.In.(mm)206NPSH REQUIREDBOWL42HEAD PER ST601811.13(283)75 78 80 82FEETMETERSAGE1610.5083(267)508214809.8878(251)4075129.25(235)81BRAKE HORSEPOWER PER ST1079308METERSFEET10AGE20040060080010001200USGPMM3/HR.050500150200250PERFORMANCE BASED ON PUMPINGCHANGE IN EFF.THRUST FACTORS AT BEP.RPMPUMPCLEAR WATER BELOW 85 F.WITH LISTEDSTAGESPOINTSIngersoll-Dresser IMPELLER LBS/FT KG/M 117514JKHMATLS.COLUMN LOSSES NOT INCLUDED1-3STANDARD5.48.0ENCLOSEDBOWL - CAST IRON - LINED2-2PumpsBALANCED2.63.9IMPELLER CURVE NO.3-1EC - 1453IMPELLER - BRONZE4EYE AREA - 18.6 SQ.IN.NS = 1700APPENDIX D_________________________________________________________________________ANSWERS TO SELECTED PROBLEMSCHAPTER 22.1 (a) Re = 834, laminar; (b) Re = 3.94x106, e/D = 0.00173, wholly rough, turbulent.2.2 (a) f = 0.0174, transitional; (b) e = 1.05x10-4m; (c) 18.6 kW.2.3 p = 744 kPa.2.4 Q = 0.607 m3/s, P = 397 kW.2 [ Pobierz całość w formacie PDF ]