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How we create value
• Customdesignreducesinstallationcosts
• Highqualityengineering suitedtothemost demandingapplications
• Highlyreliable,reducingmaintenancerequirements
• Designmodelsanticipate fieldperformance
• Ovivoexperienceindebrisfilterapplicationsacrossawiderangeofindustries
Keyfeatures&benefits
• Compactdesignsuitablefornewinstallationsorretrofit
• Lowpressuredrop
• Externaldrivemechanismwitheasyaccesstosealsandgearbox
• Suitableforhighflowsandavarietyoffiltrationsizes
• Suitableforhighdebrisloadingandcontinuousoperation
• Suitableforoperationeitherupstream(negativeoperatingpressure)ordownstream(positiveoperatingpressure)oftheintakepump
• CanbemanufacturedtoASME,NuclearandPower&PetrochemicalIndustrycodesandstandards
Brackett Green® Debris FiltersContinuousonlinecondenserandheatexchangerprotection
Brackett Green® Debris Filters
Mostpowerplantsemployextensivepre-screeningatcoolingwaterintakes.Despitethis,additionalfiltrationcanberequiredatlocationswherethecoolingwaterisloadedwithheavydebrisandmarinelife.BrackettGreen®debrisfiltersprovideavitallineofdefense,efficientlyinterceptingandremovingcoarseparticles,fibrousmaterial,mussels,clamsandothermacrofoulingrelatedtoproblemsdownstreamofpumps.
Ovivounderstandstheimportanceofthethermalperformanceofyourplanttoensureplantoutput,andultimately,profitability.Online,self-flushingBrackettGreendebrisfiltersareaneffectivesolutiontominimizefoulingfromthecondensertubes.Thislastlineofdefenseforyourcoolingwatersystemcanincreaseormaintainyourcondenser’sheatexchangeratebykeepingthetubesclean,reducingoperatingcostsandultimately,yourenvironmentalfootprint.
Prevents macro foulingBuilt-updebrisattheheatexchangerinletandcondensertubescanstoporslowcoolingwaterflow.Thisreducestheheattransferrateanddamagesoverallplantefficiency.Debrisbuild-upalsoshortenstubeservicelifethroughcorrosion,erosionandpitting.
Automaticdebrisfilteringpreventsmacrofoulingofheatexchangersandcondensers,lengtheningservicelifeandeliminatinganarrayofpotentialperformanceproblems.Theseinclude:insufficientcooling,ineffectivetemperaturecontrol,increasedpressuredrops,highenergyconsumptionandcostlydowntime.
Compact design handles all debrisOrdinaryself-flushingdebrisfiltersareinstalledexternallytothecoolingwaterline,demandingalargeamountofspaceandadditionalpipework.Somearedesignedtohandlecoarsedebriswhileothersaremoresuitableforfibrousdebrisremoval.Ovivo’suniqueBrackettGreenautomatic,self-flushingdebrisfiltersfitwithinthecoolingwaterpipingandcanhandleallformsofdebris.
TheBrackettGreendebrisfilter’shousingactuallyreplacesasegmentofthecoolingwaterpipework,requiringnoadditionalspaceorconnections.Thefiltrationmechanismisdesignedtoremovecoarseaswellasfibrousdebrisincludingplastic,mussels,clams,fish,treeroots,seaweed,algae,rocks,woodchips,pineconesandleaves.
Optimum performance for minimal costTheBrackettGreendebrisfilter’suniquedesignprovidesmaximumdebrisremovalatthelowestoperatingandmaintenancecost.OvivoBrackettGreendebrisfilterincorporatesaarrayofhighefficiencyfeatures,including:
• Lowoperatingpressuredropacrossthedebrisfilter• Maximumdebrisremovalforminimumflush waterdischarge
• Noexternalwaterrequiredforflushing• Noexternalpumprequiredforflushing
Condensertubeswithoutdebrisfilter
Insidedebrisfilterpriortocleaningcycle
Tubeconditionwithdebrisfilter
Beforeinstallationofdebrisfilter
Debrisfilterinstalled
BrackettGreendebrisfilterscontinuouslyandautomaticallyremovesuspendedsolidsfromcoolingwaterthatmightotherwiseclogtheheatexchangerandcondensertubes.
1.InletwaterenterstheBrackettGreendebrisfilterscreeningelement.Varioustypesofdebris(includingcoarseandfibrousdebris)arecollectedoverthefilterscreeningelement.Screenelementsareavailableinavarietyofshapesandsizes(round,slot,orsquare).
2.Auniquelyengineeredrotorwithseveralsuctionpartsishousedwithinthefilter.Therotorisdesignedforhighvolumedebrisremovalofalltypesandsizes,withtheminimumofcoolingwaterdischargedaswaste.Therotorisoperatedbyanelectricmotor.
3.Asdebrisaccumulates,differentialpressureacrossthescreenismonitored.Ifthepressuredropsbelownormal,therotorbeginstorotatewhiledebrisdischargeisopenedtoalowerpressuredischargepoint.Sincethepressureinsidethedebrisfilterhousingishigherthanthatatthedebrisdischargepoint,thepressureonthecleansideoftheelementwillpushdebrisintotherotorevacuationchamberwhiletherotoristurning.Debrisisvacuumedoffthefilterelement.
4.Oncethefilterelementiscleaned,therotorwillstopandthedebrisdischargevalvewillclose.
HowitWorks
a-Rotordrive
b-Filterelement
c-Debrisdischarge
d-Filterhousing
e-Differentialpressuretransmitter
c
e
b
d
a
CondenserProtectionSystem
Ovivounderstandstheimportanceofthethermalperformanceofyourplantwhichresultsinplantoutputandultimatelyinprofitability.Theuseofboththe OnlineSelfFlushingDebrisFiltersandOnlineAutomaticTubeCleaningSystemsisthemosteffectivesolutiontoeliminatethemacroandmicrofouling,scaling
andotherdepositsfromthecondensertubes.Thislastlineofprotectioninyourcoolingwatersystemsincreasesormaintainsyourheatexchangerateofyourcondenserbykeepingthetubesconstantlycleanreducingtheoperatingcostandmostimportantlyreducingyourfootprintontheenvironment.
www.ovivowater.com
©Copyright2010GLV.Allrightsreserved
100.K.1002.102010