制冷与空调专业英语

ProfessionalEnglishforRefrigerationandAirConditioningCATALOGUE目录BasicPrinciplesofReflectionandAirConditioningProfessionalEnglishvocabularyandexpressionsIntroductiontoReflectionEquipmentandSystemsCATALOGUE目录IntroductiontoAirConditioningEquipmentandSystemsFaultdiagnosisandtroubleshootingmethodsIndustrydevelopmenttrendsandchallenges01BasicPrinciplesofReflectionandAirConditioningTherevisioncycle01Understandingthebasicprinciplesoftherevisioncycle,whichincludesevolution,compression,condensation,andexpansionTypesofrefrigerators02Familywithdifferenttypesofrefrigeratorssuchasdomestic,commercial,andindustrialrefrigeratorsTechnicalapplications03Knowledgeofhowreflectionprinciplesareappliedinvarioussettingssuchasfoodpreservation,medicalfacilities,andchemicalprocessesReflectionPrinciplesandTechnicalApplicationsComponentsofanairconditioningsystemUnderstandingthemaincomponentsofanairconditioningsystemsuchastheevaporator,compressor,condenser,andexpansiondeviceFunctioningofanairconditioningsystemFamiliaritywithhowanairconditioningsystemworkstocoolanddehumidifytheairinacontrolledenvironmentTypesofairconditioningsystemsKnowledgeofdifferenttypesofairconditioningsystemssuchaswindowunits,splitsystems,andcentralairconditioningsystemsCompositionandFunctionofAirConditioningSystemRefrigerantandenvironmentalrequirementsUnderstandingthedifferenttypesofreflexantsusedinreflexionandairconditioningsystemssuchasCFCs,HCFCs,andHFCsEnvironmentalimpactFamiliaritywiththeenvironmentalimpactofreflexesandtheneedforenvironmentallyfriendlyalternativesSafetyrequirementsKnowledgeofthesafetyrequirementsassociatedwiththeuseandhandlingofrefrigerants,includingproperstorage,transportation,anddisposalTypesofreflexants02ProfessionalEnglishvocabularyandexpressions0102ReflectionTheprocessofremovingheatfromaclosedspaceordistance,typicallyforthepurposeofcoolingAirConditioningTheprocessofcontrollingthetemperature,humidity,andcleanlinessoftheairinagivenspaceforcomfortand/orprocessrequirementsCompressorAdevicethatincreasesthepressureofareflectivegas,enablingittoreleaseheatinthecondenserCondenserAheatexchangewherethehighpressurereflexgasreleasesheatandisconvertedintoaliquidEvolutionerAheatexchangerwherethelowpressureliquidreflexantabsorbsheatfromthesurroundingair,evolvingintoagas030405KeyterminalanalysisReflectionSystemConsistsofacompressor,condenser,evaporator,andexpansiondevice,workingtogethertoremoveheatfromarefractedspaceAirConditioningSystemTypicallyincludesanoutdoorunit(containingthecompressorandcondenser)andanindoorunit(containingtheevaporatorandairhandler)tocontroltheindoorenvironmentEquipmentandSystemDescriptionAlargerefurbishmentsystemusedtocoolwaterorotherliquidsforuseincoolingprocessesorairconditioningsystemsAreversiblereflexionsystemthatcanprovidebothcoolingandheatingbyreversingtheflowofreflexantsEquipmentandSystemDescriptionHeatPumpChillerCheckforleaks,looseconnections,andproperoperationofallcomponentsRegularInspectionKeepcoils,filters,andothercomponentscleantoensureeffectiveoperationCleaningLubricantmovingpartsasrecommendedbythemanufacturertoreducewearandtearLubricationFamiliarizeyourselfwithcommonissuesandtheirsolutionstoquicklyaddressanyproblemsthatmayariseTroubleshootingOperationandMaintenanceGuidelines03IntroductiontoReflectionEquipmentandSystemsThesearepositivedisplacementcompressorsthatusepistonstocompressreflectivegasTheyaretypicallyfoundinsmallreferralsystemsandarecharacterizedbytheirhighefficiencyandreliabilityScrollcompressorsarealsopositivedisplacementcompressors,buttheyuseascrollshapedcomponenttocompressthereflectorTheyarequietersandmoreeffectivethanrecruitingcompressors,makingtheirideasforresidentialandlightcommercialapplicationsRotarycompressorsusearotatingimpellertocompressthereflectorTheyarecommonlyfoundinlargerreflectionsystemsandareknownfortheirhighcapacityandefficiencyReciprocatingCompressorsScrollCompressorsRotaryCompressorsCompressortypeandcharacteristicsCondenserDesign:TheCondenserisresponsibleforcoolingandcondensingthereflectivegasintoaliquidIttypicallyinsistsofaseriesofcoilsortubesthatallowsthehotreflexantgastocoolasitpassesthroughThedesignofthecondensermusttakeintoaccountthetypeofrefresherbeingused,theambienttemperature,andthecoolingrequirementsofthesystemEvaluatorDesign:Theevaluatoriswheretheliquidreflexantevaluatorsintoagas,absorbingheatfromthesurroundingairThedesignoftheevaluatormustallowforeffectiveheattransferwhilemaintainingalowpressuredropFactorssuchasthetypeofreflector,theevaporator'soperatingtemperature,andtheairflowthroughtheevaporatorallplayaroleinitsdesignDesignofcondenserandevaporatorTemperatureControl:ReflectionsystemsrequireprecisiontemperaturecontroltoensureoptimalperformanceandefficiencyControlsystemsmonitorandadjustthetemperatureoftherefreshedspacebasedonsetpointsandambientconditionsPressureControl:ThepressureofthereflectorwithinthesystemmustbemaintainedwithinaspecificrangetoensuresafetyandeffectiveoperationControlsystemsmonitorthepressureandadjustitaccordingtousingpressureregulatorsorvalvesAutomationApplications:Automationplaysacriticalroleinmodernreflectionsystems,improvingefficiency,reducingenergyconsumption,andenhancingsystemreliabilityAutomationapplicationssuchasvariablespeeddrives,demandbasedcontrolstrategies,andremotemonitoringanddiagnosticsallowforprecisioncontroloversystemoperationsandprovidevaluableinsightsintosystemperformanceControlsystemsandautomationapplications04IntroductiontoAirConditioningEquipmentandSystemsAnAHUtypicallyinsistsofasupplyfan,heatingandcoolingcoils,filters,dampers,andcontrolsComponentsTheAHUhandlesandconditionstheair,providingthedesiredtemperatureandhumiditytotheoccupiedspaceFunctionsThereareseveraltypesofAHUs,includingmakeupairunits,returnairunits,andexhaustairunits,eachwithspecificapplicationsTypesAirHandlingUnit(AHU)

KeypointsofairductsystemdesignDualsizingPropductsizingiscrucialtoensureequalairflowandminimizenoiseandpressurelossInsulationSectionsshouldbeproperlyinsulatedtomaintainthedesiredtemperatureandreduceenergylossAirghtnessLeaksintheductsystemcanleadtosignificantenergywasteandpoorindoorairqualityPrinciplesofwaterpipesystemlayoutPipesizingPipesshouldbesizedaccordingtotheflowrateandpressuredroprequirementsofthesystemMaterialsDifferentmaterialssuchascopper,steel,andplasticareusedforwaterpipes,eachwithitsownadvantagesanddisadvantagesInsulationPipesshouldbeinsulatedtopreventheatlossorgain,dependingontheapplicationSupportandhandlersPipesshouldbeproperlysupportedtopreventsaggingandensureproperalignment05FaultdiagnosisandtroubleshootingmethodsAbnormalnoisesGrinding,queuing,orrattlingsoundsmayindicateissueswiththecompressor,fanmotors,orloosepartsLeaksanddrivesWaterleakscanresultfromcloggeddrainlines,damagedcondensatepumps,orfrozenevaporatorcoilsElectricalissuesFlickeringlights,trippedbreakers,orblownfusesmaypointtoelectricalproblemslikeshortcircuitsoroverloadedcircuitsInadequatecoolingWarmairblowingfromevents,icebuildonevaporatorcoils,orfrequentcyclingofthecompressorcansignalrefrigerantleaks,dirtyfilters,orblockedairflowDescriptionofcommonfaultphenomenaVisuallyinspectthesystemforobjectivesignsofdamage,leaks,orloosepartsListeningandfeeling:Useastethoscopeoryourearstolistenforabnormalnoises,andfeelforvibrationsthatmayindicatemotororcompressorproblemsTemperatureandpressurechecks:MeasuretemperaturesatvariouspointsinthesystemandcomparethemtonormaloperatingrangesCheckpressuregaugestoensureproperreflectivelevelsElectricaltesting:Useamultimetertotestvoltageandcontinuityofwires,switches,andrelaysFaultdiagnosisprocesssortingAlwaysrefertothemanufacturer'stechnicalmanualforspecifictroubleshootingproceduresandsafetyguidelinesIsolatetheproblembyrulingoutobjectivecauseslikepoweroutlets,dirtyfilters,orblockedeventsbeforeproceedingwithmorecomplexdiagnosticsWhenreplacingparts,makesuretousecompatiblecomponentsthatmeettheoriginalequipmentmanufacturer'sspecificationsKeepadetailedmaintenancelogtotrackrepairs,replacements,andsystemperformanceovertimeThiscanhelpide