Water pumps for Desalination APP 11-13 - Fluidtech

MAKING MODERN LIVING POSSIBLEData sheetWater pumps for DesalinationAPP 11-13ro-solutions.com

Data sheet Water pumps APP 11-13Contents1. Introduction ............................................................................32. Benefits.................................................................................33. Technical data ..........................................................................44. Variants.................................................................................45. Flow at different rpm. ...................................................................56. Flushing valve...........................................................................67. Power requirements ....................................................................68. Temperature and corrosion. .............................................................78.1 Operation...............................................................................78.2 Storage .................................................................................79. Noise level ..............................................................................710. Filtration................................................................................811. Dimensions .............................................................................812. Dimensions, complete unit ..............................................................913. Installation.............................................................................1013.1 Mounting ..............................................................................1013.2 Open-ended system with direct water supply. ..........................................1013.3 RO system with APP pump .............................................................1114. Service and warranty. ..................................................................1114.1 Maintenance...........................................................................1114.2 Repair .................................................................................112 521B1215 / DKCFN.PD.013.E1.02 / 05.2012

Data sheet Water pumps APP 11-131. IntroductionAPP 11-13 pumps are designed to supply lowviscosity and corrosive fluids under highpressure, eg. in seawater reverse osmosisfiltration applications and for high pressure saltwater pumping.The pumps are based on the positive displacementprinciple (axial piston design) whichenables a very light and compact design, andthey are designed so that the lubrication of themoving parts in the pumps is provided by thefluid itself. No oil lubrication is thus required.The pumps are supplied with an integratedflushing valve that allows the salt water to flowfrom inlet to the outlet, when the pump is notrunning.All parts included in the pumps are designed toprovide long service life, i.e. long service life witha constantly high efficiency and minimumservice required.The pumps are fixed displacement pumps inwhich the flow is proportional to the number ofrevolutions of the input shaft and the pumpdisplacement.1: Shaft Sealing2: Bolts for bellhousing3: Flushing valve4: Port plate5: Bleeding plug6: Valve/thrust plate7: Piston/shoe8: Cylinder barrel9: Retainer ring10: Swash platewith bearing11: Port flangewith bearing12: Drain plug13: Housing14: Springs2. Benefits • One of the smallest and lightest pumps onthe market.• Can be powered by a combustion engineprovided that a special coupling is used.• Long service life / no preventive maintenancerequired in the warranty period.• Generates insignificant pulsations in thepressure line.• No oil lubricant required.• Integrated flushing valve.• All parts of the pump are made of non-corrosivematerials, e.g. Duplex (EN1.4462/UNSS31803-S32205) and Super Duplex (EN1.4410/UNS S32750) stainless steel and carbonreinforced PEEK.• High efficiency.521B1215 / DKCFN.PD.013.E1.02 / 05.20123

Data sheet Water pumps APP 11-133. Technical data APP Pumps APP 11 / 1200 APP 11 / 1500 APP 13 / 1200 APP 13 / 1500Code number 180B3212 180B3211 180B3214 180B3213Geometric displacement cm³/rpm 166 137 197 166in³/rpm 10.1 8.4 12.0 10.1Rated flow at max. speed 1) m³/h 11.0 11.1 13.1 13.5gpm 48.4 49 57.7 59.3Outlet min. pressure 2) bar 30 30 30 30psi 435 435 435 435Outlet max. pressure, cont. 3) bar 80 70 80 70psi 1160 1015 1160 1015Inlet min. pressure bar 2 2 2 2psi 29 29 29 29Inlet max. pressure, cont. bar 5 5 5 5psi 72.5 72.5 72.5 72.5Inlet max. pressure, peak bar 10 10 10 10psi 145 145 145 145Max. speed cont. rpm 1200 1500 1200 1500Min. speed cont. rpm 700 700 700 700Power requirement atmax. speed and 60 baroutlet pressureTorque at 60 baroutlet pressurekW 23 24 27 29hp 30.8 32.2 36.2 38.9Nm 183 151 217 183lbf-ft 135.0 111.4 160.1 135.0Weight Kg 75 75 75 75lb 165 165 165 165Integrated flushing valve YES YES YES YES1) Typical average flow at 60 bar (870 psi)2) For lower pressure, please contact Danfoss RO Sales Organization3) For higher pressure, please contact Danfoss RO Sales OrganizationThe pumps are designed according to EN809.4. Variants • Available as ATEX certified. Category 2, zone 1and category 3, zone 2.• Available with material certificates on wettedparts.For more details on the variants, please contactthe Danfoss RO Solutions Sales Organisation.4 521B1215 / DKCFN.PD.013.E1.02 / 05.2012

Data sheet Water pumps APP 11-135. Flow at different rpm When using the diagrams shown below, it is easyto select the pump which fits the applicationbest if the flow required and the rotation speed(rpm) of the pump are known.m 3 /hAPP 1200 rpm versionAPP 1200 rpm version15,0014,0013,00APP 1312,0011,00APP 1110,009,008,007,006,005,00700 800 900 1000 1100 1200rpmm3/hAPP 1500 rpm versionAPP 1500 rpm version15,0014,00APP 1313,0012,0011,00APP 1110,009,008,007,006,005,00700 800 900 1000 1100 1200 1300 1400 1500rpmFurthermore, these diagrams shows that the flowcan be changed by changing the rotation speedof the pump. The flow/rpm ratio is constant, andthe “required “ flow can be obtained by changingthe rotation speed to a corresponding value.Thus, the required rpm can be determined as:Required rpm =Required flow × Rated rpmRated flow521B1215 / DKCFN.PD.013.E1.02 / 05.20125

Data sheet Water pumps APP 11-136. Flushing valvePressure drop [bar]2,001,801,601,401,201,000,800,600,400,200,00Flushing Valve characteristic0 20 40 60 80 100 120 140 160Flow [l/min]7. Power requirements PumpmodelAPP 11 /1200APP 11 /1500APP 13 /1200APP 13 /1500Flow Pressure rpm Cal.Factor60 bar 70 bar 80 barl/min m³/h gpm 870 psi 1015 psi 1160 psi184 11,0 48,5 23 kW 27 kW 31 kW 1180 477190 11,4 50,1 24 kW 28 kW 32 kW 1480 475218 13,1 57,6 27 kW 32 kW 36 kW 1180 482230 13,8 60,7 29 kW 34 kW 38 kW 1480 478The power requirements can be determined using one of the following guiding equations:l/min x bar 16.7 x m 3 /h x bar 0.26 x gpm x psiRequired power= [kW] or [kW] or [kW]Calc. factor Calc. factor Calc. factor1 hp = 0.75 kW1 kW = 1.34 hp1 gpm = 3.79 l/min1 l/min = 0.26 gpm1 m 3 /h = 4.40 gpm1 gpm = 0.23 m 3 /h6 521B1215 / DKCFN.PD.013.E1.02 / 05.2012

Data sheet Water pumps APP 11-138. Temperature andcorrosion8.1 OperationFluid temperature:+2 °C to +50 °C (+35.6 °F to 122 °F) - dependent onthe NaCl concentrationAmbient temperature:+2 °C to +50 °C (+35.6 °F to 122 °F)The chart on the next page illustrates thecorrosive resistance of different types of stainlesssteel related to NaCl concentration and temperature.All critical parts of the APP water pump is madeof Super Duplex.If the water pump is operated at high salinity,always flush the water pump with fresh water atoperation stop in order to minimize the risk ofcrevice corrosion.8.2 StorageStorage temperature:-40 °C to +70 °C (-40 °F to 158 °F) – provided thatthe pump is drained of fluid and stored”plugged”.Frost protection is required at temperaturesbelow 2°C. Danfoss recommends usingDOWFROST from DOW Chemical Company orChilsafe mono propylene glycol from ArcoChemical Company.NaCI vs. temperature80 º C7060DuplexSuper duplex5040316L30201001000160 160010 00016000100 000 CI -ppm160000 NaCIppm9. Noise level The exact noise level for the APP 11-13 will soonbe measured.Generally, noise will be reduced if speed isreduced and vice versa. Use flexible hoses inorder to minimize vibrations and noise.Since the pump is typically mounted on a bellhousing or frame, the noise level must bedetermined for the complete unit (system).• Rigid mounting of the pump generates morenoise than flexible mounting• Pipe mounting direct to the pump increasesthe noise level compared to a flexible hose• If using a VFD the motors can produce highernoise values depending on the operationpoint.It is therefore very important that the motor/pump unit is mounted correctly on a frame withantivibration isolation to minimize vibrations andnoise.The noise level is influenced by:• The speed of the pump, high rpm create morenoise than low rpm521B1215 / DKCFN.PD.013.E1.02 / 05.20127

Data sheet Water pumps APP 11-1310. Filtration As water has very low viscosity, the APP pumpshave been designed with very narrow clearancein order to control internal leakage rates andimprove component performance. Therefore it isimportant that the inlet water is filtered properlyto minimize the wear of the pump.The main filter must have a filtration efficiency of99.98% at 10 µm. We recommend to useprecision depth filter cartridges rated 10µm abs.ß10>5000 (equivalent to a filtration efficiency of99.98%). Bag filters and string wound filtercartridges typically have only 50% filtrationefficiency. This means that for each 100,000 particlesreaching the filter, 50,000 particles passthrough it compared to only 20 particles in afilter with an efficiency of 99.98%.For more information on the importance ofproper filtration, please consult our publication“Filtration” (code number 521B1009), which alsowill provide you with an explanation of filtrationdefinitions and a guidance on how to select theright filter.11. DimensionsInletOutlet8 521B1215 / DKCFN.PD.013.E1.02 / 05.2012

Data sheet Water pumps APP 11-13DescriptionParallel key,DIN 6885BleedingInlet portOutlet portPump mountingflangeAPP11 - APP13mm 10 × 8 × 45inch 0.39 × 0.31 × 1.77G ¼”, Hexagon AF = 6 mmM42 x 1.5; depth 17 mmM42 x 1.5; depth 17 mm125 B 4Accessories Type Code no.2” inlet hose kit2 m / 79”2” inlet Vic.Super DuplexNon-returnvalve (outlet)Super Duplex2” Victaulic 180Z02982” Victaulic 180Z01661,5” Victaulic(OD 48,3 mm)180H0053For more details on the accessories, pleasecontact the Danfoss RO Solutions SalesOrganisation.12. Dimensions,complete unit521B1215 / DKCFN.PD.013.E1.02 / 05.20129

Data sheet Water pumps APP 11-13PumpA(mm)B(mm)C(mm)D(mm)E(mm)F(mm)G(mm)IEC Electric motorAPP 11 400 513 200 318 305 659 228 30 kW, IEC 200L-4APP 11 450 561 225 356 311 692 262 30 kW, IEC 225M-6APP 13 450 561 225 356 286 667 262 37 kW, IEC 225S-4Note: Examples of different pump/motor sizesand drawing dimensions are only for IECmotors and couplings. Please always checkrequired motor power and dimensions.13. Installation 13.1 MountingThe figure below illustrates how to mount thepump and connect it to the electric motor/combustion engine.A: Flexible couplingB: Bell housingC: Motor shaftTo ensure easy mounting of the flexible couplingwithout using tools, the tolerances must bedimensioned accordingly.Note: Any axial and radial loads on the pumpshaft must be avoided.If alternative mounting is required, pleasecontact Danfoss RO Sales Organization forfurther information.Ensure 3-5mm (0.12-0.2in) air gapbetween coupling partsABC13.2 Open-ended system with direct watersupplyIn order to eliminate the risk of cavitation, apositive inlet pressure is always to be maintained.Please see technical data (section 3) forspecific pressure values.1. Place the filter (1) in the water supply line infront of the pump.2. Place a monitoring pressure switch (2) - set atmin. inlet pressure - between filter and pumpinlet. The monitoring switch must stop thepump at pressures lower than min. inletpressure. Please see technical data (section 3)for specific pressure values.3. Install a low pressure safety valve or apressure relief valve (3) in order to avoidsystem or pump damage in case the pumpstops momentarily or is spinning backwards.Note: If a non-return valve is mounted in theinlet line, a low pressure relief valve is alsorequired between non return valve and pumpas protection against high pressure peaks.10 521B1215 / DKCFN.PD.013.E1.02 / 05.2012

Data sheet Water pumps APP 11-1313.3 RO system with APP pump1. Dimension the inlet line to obtain minimumpressure loss (large flow, minimum pipelength, minimum number of bends/connections,and fittings with small pressure losses).2. Place an inlet filter (1) in front of the APPpump (2). Please consult section 10, “Filtration”for guidance on how to select the rightfilter. Thoroughly clean pipes and flushsystem prior to start-up.3. Place a monitoring pressure switch (3) set atmin. inlet pressure between filter and pumpinlet. The monitoring switch must stop thepump at pressures lower than minimumpressure.4. Use flexible hoses (4) to minimize vibrationsand noise.5. In order to eliminate the risk of damage andcavitation, a positive pressure at the inlet (5) isalways to be maintained at min. inlet pressureand max. inlet pressure. Recommend to installsafety valve or a pressure relief valve (9) inorder to avoid high pressure peaks in case thepump stops momentarily or is spinningbackwards.6. For easy system bleeding and flushing, abypass non-return vavle (6) is integrated inthe APP pump.7. A non-return valve (7) in outlet can beinstalled in order to avoid backspin of thepump. The volume of water in the membranevessel works as an accumulator and will sendflow backwards in case of the pump stopsmomentarily.8. A safety valve or a pressure relief valve (8) canbe installed in order to avoid system damageas the Danfoss APP pump creates pressureand flow immediately after start-up, regardlessof any counter-pressure.Note: If a non-return valve is mounted in theinlet line, a low pressure relief valve is alsorequired between non return valve and pumpas protection against high pressure peaks.14. Service and warranty 14.1 MaintenanceDanfoss APP pumps are designed for longoperation, low maintenance and reducedlifecycle costs.Provided that the pump has been runningaccording to the Danfoss specifications, Danfossguarantees 8,000 hours service-free operation,however, max. 18 months from date of production.If Danfoss recommendations concerningsystem-design are not followed, it will stronglyinfluence the life of the APP pumps.After 8,000 hours of operation it is stronglyrecommended to inspect the pump and changeany worn parts, e.g. pistons and shaft seal. This isdone in order to prevent a potential breakdownof the pump.If the parts are not replaced, more frequentinspection is recommended according to ourguidelines.Pump shutdown:The APP pumps are made of Duplex/SuperDuplex materials with excellent corrosionproperties.It is, however, always recommended to flush thepump with freshwater when the system is shutdown.14.2 RepairIn case of irregular function of the APP, pleasecontact the Danfoss RO Solutions Sales Organisation.521B1215 / DKCFN.PD.013.E1.02 / 05.201211

Data sheet Water pumps APP 11-13Danfoss A/SHigh-Pressure PumpsDK-6430 NordborgDenmarkDanfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.12521B1200 / DKCFN.PD.013.XX.02 / 04.2012