low yield wells
DESCRIPTION
water systemTRANSCRIPT
-
Home Products Videos CSVForum FAQ OrderOnline SearchSite
ProductCatalog
PrintLiterature
WellandPumpBasicInfo
VFDDoesNotSaveEnergy
CSVvsVFD
CSVTech.Info
CSVApplications
NSFCertified
Calculators
TankSizing
Pump&MotorManufacturers
LetterstoEditor
References
Retrofits
PressureSwitch
EventCalendar
WarrantyInfo
AboutUs
Back
LowYieldWells
Itisimportanttoknowtheyieldofawelltodetermineifitcanproducethepeakandtotaldemandsrequired.Theactualyieldofawellisthevolumeofwaterthatcanbeproducedcontinuously,withoutdepletingorpumpingthewelldry.Iftheyieldofthewellisnotasmuchormorethanthepeakdemandrequired,storedwatermustbeutilized.
Awellthatonlymakes1GPMcansupply1440gallonsperday,whichisenoughwaterfor4averagehouses.Thatisconsidering75gallonsperdayperperson,or300gallonsperdayforafamilyoffour.However,thepeakdemandwilldeterminethemaximumgallonsperminute(orGPM)thatneedstobesuppliedbythepump.
DomesticSizeSystemsAwellwith6"casingwillstoreabout1.5gallonsofwaterperfoot.Ifthereis100'ofwaterinthewell,thisisabout150gallonsofstoredwaterthatcanbeusedbeforethewellrunsoutofwater.150gallonsofwaterstoredinthewell,willallowapeakdemandof14GPMforalittleover10minutes.Itwillthentake150minutesforthewelltocompletelyrecoveratarechargerateof1GPM.Asinglehouserequiring14GPMpeakcanbesuppliedwithaonepumpsystemandnostoragetank,eveniftheyieldandrecoveryrateofthewellisonly1GPM,aslongasthewellitselfhassufficientstorage.
Ifthewelldoesnothavesufficientstoragetosupplypeakdemands,astoragetankandboosterpumpmustbeutilized.Thesizeofastoragetankmustbelargeenoughtosupplypeakdemandsforabout10minutes.However,amarginofsafetywouldrequireastoragetankthancansupply2or3timesthe10minutepeakdemands.
Somestoragetank/boosterpumpsystemshaveameansofswitchingbackandforthbetweenthewellpumpandboosterpump.Usuallythewellpumpcomesonfirsttosupplywaterdirectlytothehouse.Whenthewellisdepleted,thesystemswitchestothestoragetankandboosterpump.Whenthestoragetankisempty,thewellhashadtimetorecharge,andthesystemswitchesbacktobeingsupplieddirectlyfromthewellpump.Thissystemallowsuseofthestorageinthewell,andrequiresasmallerstoragetanktomeatpeakdemands.
LargeSystemsInlargersystems,suchasacasewherefour,3bedroomhousesaresuppliedbyonewatersystem,apeakdemandof56GPMcouldberequired.Ifthewellcannotsupply56GPM,thenatwopumpsystemwithastoragetankwouldbeneededtosupplythesehighpeakdemands.A1,000gallonstoragetankcouldsupply56GPMpeakdemandsforupto17minutes.Apumpandpumpcontrolsystemthatcansupply56GPM,andstillsafelysupplyaslittleas2GPM,wouldbeneededtodrawwaterfromthestoragetanktosupplythehousesasneeded.Thewellpumpcanthenrun24hoursadayifneeded,tomaintainsufficientwaterinthestoragetank.Thelowertheyieldofthewell,thelargerthestoragetankshouldbe,toprovideamarginofsafety.
DisinfectionWaterinawellusuallydoesnotrequiredisinfection.Ifthewellissealedproperly,itshouldnotallowcontaminationtoenterthewell.Awellisacoolanddarkplacethatdoesnotpromotecontamination.However,anabovegroundstoragetankmayneedperiodicdisinfection.Thewaterquality,temperature,amountoflight,andotherthingsdeterminetheamountofdisinfectionneeded.Somestoragetanksmayonlyneedchlorineoccasionally,anddisinfectioncanbedonemanually.Othersmayneedautomaticandcontinuousdisinfection.
-
Thiscanbedonewithachlorineinjectionpumpthatcomesonwhenthewellpumpisrunning,andaddschlorineproportionallytotheamountofwaterbeingproduced.
PressureStoragetanksareventedtoatmosphere,anddonotsupplypressure.Aboosterpumpisneededtodrawwaterfromastoragetankandsupplypressureasneeded.SeeBoosterPumps
CycleStopValvesisaregisteredtrademark.Allrightreservedunlesspriorauthorizationisobtained.
CycleStopValves,Inc.10221CR6900Lubbock,Texas79407SendEmail
80065202078068854445Fax:8068851994
SelectLanguage