1.What’sfreezing?2.Conditionsofrefrigerant3.CFCregulation4.Changeofrefrigerant(3sheet)5.Typeofrefrigerator6.Configurationofbasiccycle7.Compressor(2sheet)8.OLP9.PTC10.Evaporator11.Condenser12.Capillarytube13.Dryer&Accumulator14.SolderingofHotLine&SuctionandCapillarytubeUnderstandingofRefrigeratorCycleSystemElementaryClass(introduction)1.Designprocess2.Calculationofadiabaticload3.Graphforcalculationofadiabaticload4.Calculationofcompressor’sfreezingcapacity5.Graphforcalculationofcompressor’sfreezingcapacity6.Selectionofcompressor(OverLapforadiabaticload&Compfreezingcapacity)7.Selectionofevaporator8.Selectionofcompressor9.SelectionofcapillarytubeMiddleClass(cycledesign)CycleTextElementaryClass(introduction)–What’sfreezing?What’sfreezing?

Tokeepobjectatthefixedlowertemperaturethan

roomtemperature.Namely,tokeepcoldorfreezeobjectsbyabsorbing

heatfromthemataspecificplaceanddischarging

itatanotherplace.Forrefrigeratorexample,temperaturewithin

refrigeratormustbekeptatabout2℃toconserve

foodsfreshandinthiscase,heatquantity

invadingintoitmustbecontinuouslyremovedto

keeplowertemperaturethanambienttemperature.

Technologytoachievethisgoalisveryfreezing..Youwillfeelcoolwhendroppingliquid(water,alcoholetc)whosestatuscanbechanged(liquidstatus?vaporstatus)onthebackofthehandsandthenblowingthemwithyourmouth.Itcanbealsorecognizedasatypeoffreezing.DevelopmentofRefrigerator1/27GreatCompanyGreatPeopleFastExecutionFastInnovationNaturalrefrigerator(cave,undergroundwateretc.)IceBoxComeon!I’llgiveyoucool!Firstbirthofrefrigerator(atLinde,Germany1876)DevelopmentascurrentrefrigeratorCycleTextElementaryClass(introduction)-ConditionsofRefrigerantConditionsofRefrigerant

Operationmediaofafreezerisreferredas

refrigerantandconditionsofthisrefrigerantare

asfollows:①Largepotentialheatforevaporation.[Substancewithlargepotentialheatfor

evaporationhasbetterfreezingperformancesince

freezingmethodofthecycleusesenergyresulting

fromstatuschangeofsubstance(liquid?vapor).]②Tobeeasilyliquidatedandevaporated.[Substancethatiseasilycondensedatacondenser

underambienttemperatureandhaslowevaporation

temperatureatatmospherepressureorsois

desirable.]③Lowcoagulatingpoint.[Functionofthesystemwillbelostifrefrigerant

iscoagulatedatthecoolingsystemduetoitshigh

coagulatingpoint.]④Highcriticalpoint.[Functionofthefreezingsystemwillbelostsincerefrigerantwillnotbeliquidatedattemperature

beyondcriticalpointevenapplyinghighpressure.]⑤Largespecificheatofvaporandsmallspecificheatofliquid.[Ifspecificheatofvaporissmall,excessiveheatlevelwillrisewhenvaporisinducedinto

aCompandspecificvolumewillincreaseandthus

efficiencyoftheCompwillreduce.

Temperatureofliquidbecomeshighwhenliquid

passesthroughthecapillarytubesandreachesto

anevaporatorifspecificheatofliquid.]⑥Specificvolumeandspecificheatratioofvapor

mustbesmall.[Specificvolumeofvapordeterminesthesize/efficiencyofaCompandthespecificheatratio

engagesintemperatureriseaftercompression.]⑦Havingsolublefeaturesforoil.[Smallquantityofoilstogetherwithrefrigerant

goesoutincompressing/dischargingrefrigerant

fromtheComp.Ifthereisnosolublebetweenrefrigerantandoil,

viscosityofoilincreasesveryfromtheevaporator

underlowtemperatureandthustheycannotreturn

totheComp.Therefore,theCompwillbedamagedduetopoor

oils.]⑧Noinflammable,explosion.Toxicormetalcorrosion

characteristics.⑨Chemicallystableagainsttemperature/pressure.⑩Noheattransfer.?Goodelectricalinsulation.?Excellenteconomity.2/27GreatCompanyGreatPeopleFastExecutionFastInnovationOzoneLayerDestructionMechanismCycleTextElementaryClass(introduction)-CFCRegulation3/27EnvironmentalDestructionbyCFC

AfterMontrealCovenantisadaptedin1987under

supervisionoftheUNEP(UnitedNationsEnvironment

Program),productionanduseofCFC,HCFCandHalon

etcasmajorcauseofOzone(O3)layerdestructionisgraduallyprohibitedandrestrictionspeed

againstthembecomesrapid.CFCetc(freongas)arenotdangeroustothebody

andwidelybeingusedastheyareconsideredas

giftofgod(mousse,freezing,detergentetc).

However,CFCisverystablesubstanceinthe

atmospherebutCI-radicalisseparatedsubjectto

astrongultra-violetifitrisestothe

stratosphere.AsCl-radicalperformsresponse

repeatedly,itdestroysseveralhundredthousand

ofOzone.Therefore,everycountrybeginstoregulateagainst

allsubstancescontainingCl-radicals.Earth20kmTroposphere20kmStratosphereOzoneLayerUltra-violetWow!I’lldie!CausingskindiseaseorblindnessO3O3O3O3O3Cl-ClOO2AClradicaldestroysseveralhundredthousandEAofO3throughrepeatedreactionwithOzone.(Cl-＋O3?ClO＋O2?Cl-＋O＋O2)GreatCompanyGreatPeopleFastExecutionFastInnovationExistingRefrigerant(CFCetc)

Molecularformulaofrefrigerant[CF2Cl2]-.R12(CFC,freon,non-polar)12＋90＝102MolecularFormulaCarbonHydrogenFluorineCFFClCl

R12isnon-polar(moleculehasnopolarity.)R12isnon-polarandusesmineraloilasoilfor

theComp.Ithasinsolublerelationshipwithpolar

H2Oandcausesnoinclusionofwaterandresults

innochemicalreactionwithH2Oandthusissomewhatstableformoisture(easyprocesscontrol).ODP(OzoneDepletionPotential):1.0GWP(GlobalWarmingPotential:3.1CycleTextElementaryClass(introduction)-ChangeofRefrigerant4/27※Wecanknowmolecularformulabyadding90to

numbersofrefrigerant.Namely,thehundredunitindicatesnumbersof

carbon,thetenunitindicatednumbersoffluorine

andtheremainedemptypositionindicatedCl.

Ifsummingthemall,themolecularformulais

completed.※Oilisnon-polarandH2Oispolar.Theyarenot

mixedtogetherevenafterspoiledandare

separatedeachotherbymakingalayer.

R12hasCl-radical.R12hasCl-radicalandthushasODPcoefficientand

appearsrestrictedsubstanceinMontrealCovenant

in1987toprotecttheearth.Toconfrontwithit,LGhasfinisheddevelopmentofR12alternativerefrigerantduringtheperiodfrom1989through1992(threeyears)andstartsconversiontoR134a(HFC)anddoesnotproduceR12now.※Asyouknowwell,airconditionerofanautomobilealsousesR12andnowusesrefrigerantR134a.IhateaR12.Givemeanother!Veryhungry!Uh~~GreatCompanyGreatPeopleFastExecutionFastInnovationCycleTextElementaryClass(introduction)-ChangeofRefrigerant5/27CurrentRefrigerant(HFCetc,NaturalGas)Refrigerant[CF3CFH2]-.R134a(HFC,polar),R600a(non-polar)

134＋90＝224MolecularFormulaCarbonHydrogenFluorine

R134ispolar(amoleculehaspolarity).R134awithpolarityusesnotmineraloilasoilfor

theCompbutusesspecialoilwithpolarityasester.

Refrigerant&oilhassolublerelationshipwithpolar

H2O.Moisturecontainingproblemiscritical.ItalsocauseshydrolysisinbindingwithH20andhas

criticaleffectonComp’sreliabilitybygenerating

HCL(strictmoisturecontrolofprocessisrequired).CHHFCFFFODP(OzoneDepletionPotential:0.0GWP(GlobalWarmingPotential:0.26※Wecanknowmolecularformulabyadding90tonumbersofrefrigerant.Namely,thehundredunitindicatesnumbersof

carbon,thetenunitindicatednumbersoffluorine

andtheremainedemptypositionindicatedCl.

Ifsummingthemall,themolecularformulais

completed.

R134ahasnoCl-radical.AsR134ahasnoCl-radical,itsODPis“0”.

However,sincetheGWPisnot“0”,refrigeratorsapplyingnaturalgas(R600a,LPG)asrefrigerantarereleasedmainlyinEurope.TheR134amaybeincludedproductssubjecttorestrictionifrestrictionagainstCO2isstartedoninternationalbase.

Therefore,LGalsoappliesaR600atosomemodelsandhasrelevanttechnology.※CautioninapplicationofR134a.1)Moisturecontrol(hydrophilepropertyrefrigerant&oil)2)ControlofgarbagequantitywithincycleandreliabilityofComp(reductionoflubricantperformanceofesteroilincomparisonwithmineraloil)3)Controlofvariousorganicsubstanceswithincycle(increasedchemicalreactionlevelofesteroilincomparisonwithmineraloil)GreatCompanyGreatPeopleFastExecutionFastInnovationNaturalGasRefrigerant(R600a)StatusforCO2

CO2emissionquantityisrapidlyincreasingsince

industrialrevolutionin1860.

Asspeedofindustrializationnowbecomesfastin

allovertheworld,thisincreasespeedgradually

accelerates.Theheightofseasurfacerisesduetotheearth

warmingeffectby10through25cmfortheperiod

of1980through1990(riseof0.3～0.6℃)andis

expectedtorise50cm(riseof2℃)in2100.

Therefore,activitiestomeetwithsuchproblemshasactivelystartedsince1980andapanelorganization(IPCC)concerningchangeofweatherbetweengovernmentsinNovember1988andacovenant

concerningchangeofweather(UNFCCC)ismadeto

reduceCO2emissionquantityin1992.

ButnocountrytriestorestrictCO2whileslowingitseconomicaldevelopmentspeeduntilnowbecausetheorganizationhasnocompulsoryproperty.However,restrictionisexpectedfollowedinsoonerdaysatthecurrentstagewheretheCO2emissionquantitypassestheconcernedlevel.CycleTextElementaryClass(introduction)-ChangeofRefrigerant6/27

Refrigerant[CH(CH3)3]-.R600a(non-polarity)

※Caution:Calculationofmolecularformulaby

adding90isnotdone.

R600aisnon-polar(moleculehasnopolarity.)

Therefore,R600acanusesnon-polarmineraloil

asoilfortheCompasinR12asexplainedinthe

formerchapter.Ithasinsolublerelationship

withpolarH2Oandcausesnoinclusionofwater

andresultsinnochemicalreactionwithH2Oand

thusissomewhatstableformoisture(easyprocesscontrol).R600ahasexplosiveproperty.R600ahasexplosiveproperty(iso-butane)andverycarefulattentionsisrequiredin

manufacturingrefrigeratorsandcycleservice.(Sinceitissameseriesasbutanegas,itmay

explodeinemissiontogetherwithappropriate

densityintheatmosphere.)

※ScopeofExplosion:1.8～8.4Weight%Inspitedoftheabovementioneddanger,usingtheR600aasrefrigerantisbecauseODP＝”0”andGW≒”0”.GreatCompanyGreatPeopleFastExecutionFastInnovationSideBySideRefrigeratorBottomfreezerRefrigeratorTopMountRefrigerator1DoorRefrigerator(directcoolingtype)1124Plus(Freezing&GimchiRefrigerator)Accordingtothecoolingtype,refrigeratorisclassifiedintoindirectcoolingtypeusingafanandindirecttypenotusingafan.Accordingtothestructureofrefrigerator,itisclassifiedintoTopMounttypewithSideBySidetypeandaF-roominstalledatthetop,andBottomFreezerthattheyareinstalledatthebottom.Arefrigeratorisrecentlybeingdevelopedforusingspecialusesuchas1124(GimchiRefrigerator).7/27CycleTextGreatCompanyGreatPeopleFastExecutionFastInnovationElementaryClass(introduction)-TypeofRefrigeratorCycleText8/27BasicCycleRoleperPart

Compressor(reversibleadiabaticcompression)

:Sucknormaltemperatureandlowpressuregasandcompressandthendischargeitashighpressuregas.Condenser(liquidationprocessofrefrigerantheatemission)

:Hightemperature,lowpressuregaspassesthroughthecondenserandbecomesliquidof

normaltemperature(＋6～10℃)andhighpressure

gasafteremission.CapillaryTube(pressurereductionprocess)

:Liquidrefrigerantofnormaltemperature(＋6～10℃)andhighpressurepassesthroughthe

Capi-Tubeandbecomesliquidgasoflow

temperatureandlowpressure.

Evaporator(evaporationprocessofrefrigerantthroughheatabsorption)

:Refrigerantoflowtemperatureandlowpressuresuckambientheatforevaporationandbecomes

lowtemperatureandlowpressuregasandissuckedintotheCompagain.DryerCompressorS-PIPEHotLineCapi-TubeEvaporator-0.247Kg/?G.-32℃8.786Kg/?G.80℃±10℃?38℃8.786Kg/?G.38℃-0.247Kg/?G.-32℃?30℃8.786Kg/?G.38℃Condenser-0.247Kg/?G.-32℃-0.247Kg/?G.30℃GreatCompanyGreatPeopleFastExecutionFastInnovationElementaryClass(introduction)-ConfigurationofBasicCycleCycleText9/27BasicFreezingPrincipleofRefrigeratorCycle

Basicprincipleofthecoolingcycleusesthatboilingpointofrefrigerantchanges.dependingonpressure.

Youmighthadexperiencedthatboiledricedoesnotgetripenedwellwhenmakingitonthemountain.

Itisbecauseasaltitudebecomeshigh,pressurefallsandboilingpoint(temperature)alsogoesdown.Waterboilsathomeat100℃butitboilsbelow100℃onthemountainandthusboiledricedoesnotget

ripenedduetolowtemperature.Continuouslysuckingairtoreachvacuumafterfillingwateratanyspace,boilingpointofwatergoes

downnearalmost-24℃andwecanfreezeanotherobjectusingitbutitisnoteconomicalandpractical.Inaddition,haveyouseenamovieofTerminator?Youwouldhaveseenterminatorisfrozenduetoexplosionofaliquidnitrogenbarrel.Nitrogenisusuallykeptasliquidevenatnormaltemperaturewhentheinsideofthenitrogenbarrelatabout120atmosphericpressure.

Terminatorisfrozenastheboilingpointchangesto–196℃whennitrogenisdisclosedtotheatmosphere.Ifyoucouldonlywithstandingabout120atmosphericpressure,youwillnotdieevenifyouwouldenterintotheliquidnitrogenbarrel.Therefore,thecycleofrefrigeratoradaptssubstance,thatcanbeliquidatedevenatnormaltemperature

byapplyingsomepressure,asrefrigerantandthenpressurizesitwiththeComp.Itmakesitasliquid

statusatnormaltemperaturethroughacondenserandrapidlypressurizesitwithacapillarytubeand

keepslowtemperaturestatusattheevaporator.

Refrigerantsarecontinuouslysuppliedatthecapillarytubesotheevaporatorcanbekeptatnormal

temperature/lowpressure.TheCompcontinuouslysucksrefrigerantofvaporstatusthatisevaporatedat

theevaporator.ItisnamedasF/Rcyclesincerefrigerantscontinuetocirculateandmakeaclosed-circuit.GreatCompanyGreatPeopleFastExecutionFastInnovationElementaryClass(introduction)-BasicFreezingPrincipleofRefrigeratorCycleCycleText10/27What’saComp?StructureofComp

Meansamechanicaldevicetoincreasepressureby

pressurizingvaporandperformsactionthatsucks

refrigerantgasoflowtemperature/lowpressure

fromtheevaporatorandpressurizesitandsends

gasofhightemperature/highpressuretothe

condenser.TheCompislargelyclassifiedintomotorpart/powertransferpart/compressionpart.

Themotorpartconvertsappliedelectricalenergytorotationmotion.

ThetransferparttransfersmotionenergyofthemotortothecompressionpartbyusingCon-Rod,pistonandcylinder.Thisenergyispressurizedasgasoflow

temperature/lowpressureatthecompressionpartbypistons,cylindersandvalvesandisconverted

tothermodynamicenergy.Con-RodCylinderPistonDischargePipeSuctionPipeCrankShaftProcessPipeStatorRotorPiston:Sucks/pressurizes/dischargesrefrigerantwhilereciprocatingtheinsideofacylinder.Cylinder:Formscompressionspaceandsupportsapiston.CrankShaft:Transfersrotationforceofarotor.Con-Rod:ConvertsrotationmotionoftheC/Shafttostraightlinemotion.Rotor:TransfersrotationforcetotheC/Shaft.Stator:Generatesflux/current.Rotor+Stator:Convertselectricalenergytomechanicalenergy.Suctionpipe:Deliverssuctiongas.Dischargepipe:Deliversdischargegas.GreatCompanyGreatPeopleFastExecutionFastInnovationElementaryClass(introduction)-CompressorCycleTextElementaryClass(introduction)-Compressor11/27ModelNameofCompWork,HeatandPerformanceLA62LADMInformationoftheCompcanbeidentifiedthroughmodelnameontheCompTagasfollows:SeriesNameNS,NSBNR,NA,ND,KXLA,LA,LCDisplacementEx)62=6.2cc/RevApplicationCategoryL:LBPwithR134aH:HBPwithR134aN:LBPwithR600aImprovementOrderA,B,CMotorTypeG:RSIRM:RSCRH:CSRVoltage/FA:100V/50,60HzQ:100~115V/60HzC:115V/60HzF:127V/60HzD:220V/60HzP:110V/50HzJ:220V/50HzE:220~240V/50HzB:220V/50,60HzK:110V/60HzInputOutputWattElectricalenergyappliedintheCompKcal/HrThermodynamicenergygiventogasthattheCompsucksEnergythattheevaporatorsucksintheneighborhoodKcal/HrEfficiency=ThermodynamicenergygiventogasthattheCompsucksElectricalenergyappliedtotheCompC.O.P=ElectricalenergyappliedtotheCompEER=SameconceptasC.O.Panditsunitis(Btu/Hr)/WattWorkJouleCapacitytodisplacementof1mwithforceof1N1(Joule/sec)WattWorkRatioHeatKcalHeatrequiredformakingwaterof1kgat14.5℃to15.5℃GreatCompanyGreatPeopleFastExecutionFastInnovationEnergythattheevaporatorsucksintheneighborhoodCycleTextElementaryClass(introduction)-OLP12/27What’sOLP?BasicCharacteristicsofOLP

OLP(OverloadProtector)meansoverloadprotector.

Thispowersoffforprotectingthemotorofthe

Compifthemotorengagesinoverloadstatus.Therearebimetaltodetecttemperatureanda

heaterheatedbyinductioncurrentinitsinside.

Amethodtopreventoverloadisthatthecontactisshort-circuitedasitsambienttemperaturerisesinoverloadandaccordinglybimetaltemperaturerises.Anothermethodtopreventoverloadisthatthecontactisshort-circuitedasbimetaltemperaturerisesduetoheatingoftheheater.OperationContactBimetalHeater4TM265RFBYY-55(1)(2)(3)(4)(1)HEATER(2)TEMPERATURE(3)CONTACTCAPACITY(4)TERMINALSHAPEToreadtheOLPSpec,UncertainAreaOLPOperationAreaOLPNon-operationArea

T=KT·I2T(OPEN)=EPA+KT·I2T=T(OPEN)-EPAT:TemperaturewhenbimetalrisesduetoeffectofaheaterKT:Radiationcoefficient(testvalues)T(OPEN):OpentemperatureofbimetalCompOperationCurrentAppliedCurrentTemperatureCircuitDrawingInsideStructureGreatCompanyGreatPeopleFastExecutionFastInnovationCycleTextElementaryClass(introduction)-PTC13/27What’sPTC?BasicCharacteristicsofPTC

MeansabbreviationofPTC(PositiveTemperature

Coefficient)andusespropertythatresistancevaluesrapidlyincreaseiftemperaturerises.

ThePTCbreakscircuitsasresistanceofthe

elementitselfrapidlyriseswhenitarrivesbeyondaconstanttemperatureafterapplyingvoltageatbothendsofthePTCelements.ThePTCmeansmotionunittoautomaticallycontroloperationoftheCompmotor.P470MB(1)(2)(3)(4)(1):PTCSTARTERINDICATIONMARK(2):INITIALRESISTANCE(470:47?)(3):ALLOWANCEOFRESISTANCEVALUE(M:±20%)(4):OPERATIONMETHOD(A:CSIR,B:CSCRC:RSIR,D:RSCR)

CharacteristicsofheatgeneratorCharacteristicsthatmoreelectricity

initiallyflowsandthenflowsless.InductioncurrenttoPTCTHERMISTOR↑↓ResistanceDownResistanceUp

↑↓TemperatureDown←ElectricalinductionDownCharacteristicstodetectchangeoftemperatureChangeofambienttemperatureatPTCTHERMISTOR↓ChangeofresistanceatPTCTHERMISTOR↓OccurrenceofelectricalsignalsTerminalPTCElementToreadthePTCSpec,BasiccharacteristicsofPTCisasfollows:Resistance(Ω)Temperature(℃)Voltage(V)AvailablesectionUnavailablesectionCurrent(A)FollowingcharacteristicscurveobtainedGreatCompanyGreatPeopleFastExecutionFastInnovation→heatgenerationCycleTextElementaryClass(introduction)-Evaporator14/27TypeofEvaporatorFunctionofofEvaporatorIndirectFreezingTYPEDirectFreezingTYPEHereisaplacetodirectlyachievepurposeoffreezing.Refrigerantliquidoflowtemperatureandlowpressurethatispassedfromtherefrigerantcontroller(capillarytube)absorbsheatfromtheobjectstobefrozen(insideofrefrigerator).ItchangestovaporrefrigerantandisabsorbedintotheComp.Theobjectstobefrozen(insideofrefrigerator)keepafixedtemperaturewithheatrobedfromrefrigerant.Fortheevaporator,airwithinrefrigeratorbecomesfrozenandfrostformsifliquidrefrigerantevaporates.Frostmustbeperiodicallyremoved(timeandtemperature).HeatEvaporatorforDIOSRefrigeratorEvaporatorforT/M,B/F,1124EvaporatorbasedondirectfreezingmethodGreatCompanyGreatPeopleFastExecutionFastInnovationPositionofEvaporatorFunctionofEvaporatorEvaporatorissituatedattherearsideoftheF-roomthatthelowesttemperaturemustbekeptattherefrigeratorandgrillesandfans(professionaltermsatsite)areinstalledsothatconsumerscouldNotviewTheinside.CycleTextElementaryClass(introduction)-Condenser15/27TypeofCondenserFunctionofCondenserOPENTYPECLOSETYPEAcondenserislocatedataplacewherepurchasersofproductcandirectlyviewwiththenakedeye.Itspositionmayvarydependingonthetypeofrefrigeratorbutismainlyplacedattherearofrefrigeratororinsideoffoamingform(adiabaticwallofrefrigerator).PositionofCondenserFunctionofCondenserThecondenserplaysaroleofheat-changingrefrigerantgasofhightemperatureandhighpressuredischargedfromtheCompwithwaterorairunderroomtemperaturetocondensethemasliquidrefrigerantofhightemperatureandhighpressure.Purposeofmakingthemasliquidstatusistousepotentialheatinchangeofstatus.Torobmuchheatfromtheevaporatorispossiblewhentheychangefromliquidstatustovaporstatus.Effectwillnotbeexpectedfromtheevaporatorduetoriseofcondensingtemperatureandpressureifinstallingthecondenserataplacewhereoutsidetemperatureistohighorventilationisnotgood.

WirecondenserFancooling(Compulsoryconvection)Outsidedisclosingtype(naturalconvection)DraincondenserWallcondenserHeatNotexternallydisclosedsincethisisstainedinthefoamingformofrefrigerator(adiabaticwall)GreatCompanyGreatPeopleFastExecutionFastInnovationCycleTextElementaryClass(Introduction)-CapillaryTube16/27ExpansionValveCapillarytube

MeritsDemerits

Flowphenomena-Pressureandtemperaturedropphenomena-ChockedflowOccurrenceofflowthatreachessoundvelocity

attheoutletofacapillarytubebutentropy

becomedelayedifentropyreduces.-FannoflowInsideflowofthecapillarytubeisadiabaticflowandpressuredropcontinuestoincreaseuntilsoundvelocitywilloccurdependingonfrictionofatube.-EvaporationdelayphenomenaTimewhenbubblesgenerateinsideofthecapillary

tubeisslowerthantheologicalflashpoint.

CompressorandcapacitybalanceAcapillarytubemustbeabletosupplyasmuchascirculatingquantityofrefrigerantthattheCompdischargestotheevaporator.Self-controlcapacityMeansactionthatexcessiveandpoorrefrigerant

(whennotmatchingwithrefrigerantcirculationquantityoftheComp)searchesformatchingpointsbyitselfwhilepressureoftheevaporatorandcondenserchangesalittlebit.

Majorroleofexpansionvalve-.Droppressureofrefrigerantbeyondroomtemperaturetomakeitastwo-statusoflow

temperature.-.Tocontrolflowquantityofrefrigerantflowing

throughthesystem.Classification-.FixedflowareatypeCapillarytube,Shorttubeorifice-.CurrentareavariabletypeFloattypeexpansionvalve,normalpressuretype

ofexpansionvalve,normaltemperaturetypeof

expansionvalveandelectronicexpansionvalve.Capillary-TubeSlimandlongcoppertubewithdiameterof0.5-2.6mmandlengthof1-6m.Detailsforillumination

andmaterialsetcinsideofthecoppertubeare

specifiedintheASTMB60-88.LowresponsecapacitydependingchangeofoutsideloadSimplestructureLowoperationloadLowpriceGreatCompanyGreatPeopleFastExecutionFastInnovationCycleTextElementaryClass(Introduction)-Dryer&Accumulator17/27FunctionofDryerFunctionofAccumulatorBodyFilterScreenMolecularSieve(moistureabsorptionagent)BaffleScreenHolder※Aporeofabsorptionagentmustbesmallerthanmoleculeof

refrigerantandlargerthanmoleculeofwater(absorptionofonlymoleculeofwater).PositionofAccumulatorRefrigerantInRefrigerantOut

Dryerisafiltertofilterforeignmaterialsinsideof

thecycleandisinstalledimmediatelybefore

refrigerantsengageintheCapi-tubetopreventclogging

statusoftheCapi-tube.IntheMolecularSievesucksonlymoistureinthecycle

andpreventscorrosionbymoistureandmoistureclogging

attheendoftheCapi-tube.?Note?Water:2.8~3.2?R134a:4.0?R12:4.2?R600a:4.3?XH-5:4.0~4.3?XH-9:2.8~3.2?XH-7:3.0~3.5?※XG-5unavailableinapplicationofR134aH2OH2OR134aGreatCompanyGreatPeopleFastExecutionFastInnovationAnunittocontrolofquantityofrefrigerantchangeddependingonchangeoftemperaturearoundrefrigerantthatissituatedattheoutletofevaporatorandakindofrefrigerantcollectionplaceasstorageunit(buffer)ofliquidstatusrefrigerant.ACapi-tubesolderingunitkeeptemperatureofaS-pipe(onCompside)asroomtemperaturebytransferringheatoftheCapi-tubetotheS-pipethroughsoldering(solderingbond),andpreventdewingatthepipeandliquidatedcompressionofth