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1、THERMALRECOVERYReviewofOnce-ThroughSteamGeneratorsSTRUTHERSWELLSCORP.J.P.FANARITISWARREN,PA.STRUTHERSTHERMO-FLOODCORP.J.D.KIMMELHOUSTON,TEX.Abstractwallsintheoutletportionofthegeneratorcoil,there-forethemaximumtubewalltemperaturemustbedeter-ThispaperreviewsIhedesigncon
2、ceprspertainingtotheminedusingasteamratherthanawaterheattransferfovct*tl-circt(lationonce-through‘,steciuzgenerator.Toaidfilmcoefficient.Sincethesteamfilmcoefficientwillbetheproductionengineerinevaluatingdifierentgenkmtorsconsiderablylowerthanthatachievedwithwateratanf
3、orapplicationindifferentsituaticvm,thispaprrdiscussesequalmassvelocity,themaximumtubewalltemperatureelctncntsoffeedwatertreatnmt,aspectsofdesign,defineswouldbeconsiderablyhigherthaninaconventionalboilercommontermstheproductionerzgineermightnotbefaini-unlessalowerradian
4、tabsorptionrateisused.Themethodliarwith,anddescribesseveralfiguresincludedjorZdeter-ofcalculatingthetubewalltemperaturewillbeoutlinedtninationofheatrequirements,pressureloss,generatorlater.thermaleficirncy,heutlosses,~twrkingtpressuresandtubespacing.Theonce-throughgene
5、ratorwasspecificallydevelopedforthermalfloodingapplicationsandprovidesfeaturesnotavailableinconventionalsteamboilers,AmongtheIntroductionimportantadvantagesarethefollowing:Theadventofhigh-pressuresteaminjectionasasec-1.Itwillhandlefeedwaterwitharelativelyhighper-ondary
6、recoverytechniquehascreatedarequirementforcentageofsolids,providedthesolidshavebeenconvertedageneratorsuitableforthisapplication.Thegenerallytosolubleform.satisfactoryandsometimesspectacularresultsachieved2.Itdoesnothaveaseparatingdrumandisessentiallyinseveraloftheinit
7、ialcommercialsteamfloodingproj-onlyapipecoil,BecauseofthesmallVOIumeofwater‘ectshascreatedarapidincreaseintherequirementforand/orsteamcontainedinthecoilandthelackofasuitablegenerators,Theresulthasbeentheappearancedrum,itdoesnotconformtotheclassicdefinitionofaonthemarke
8、tofseveralcompetitivedesignsofthermalboiler.recoverygenerators.Theproductionengineeristhusfaced3,Itdoesnothavelpvelco
