《飞机机电专业英语》课件-B737NG空调系统

Newwordsairconditioning空调interior

n.内部，里面；adj.内部的，里面的flightcrew机组人员，飞行人员parameters

n.参量，参数humidity

n.（空气中的）湿度，潮湿odors

n.气味；名声distribution

n.分配；分布GeneralFunction:Theairconditioning【空调】

systemcontrolstheinterior【n.内部；adj.内部的】environmentoftheairplaneforflightcrew【机组人员，飞行人员】,passengers,andequipments.Thecontrolparameters【n.参量，参数】

includepressure,temperature,humidity【n.（空气中的）湿度，潮湿】

andalsocabinodors【n.气味；名声】.GeneralSubsystems:Itincludesdistribution【n.分配；分布】

system,pressurizationsystem,coolingsystem,temperaturecontrolsystem,equipmentcoolingsystemandheatingsystem.DistributionSystem

Function:—provideconditionedairtotheflightcompartment andpassengercabin;—recirculate【v.再流通；再通行】

passengercabinconditionedair;—provideventilation【n.空气流通；通风设备】forlavatories【n.厕所，盥洗室】andgalleys【n.（船或飞机的）厨房】;—supplycoolingairtoelectronic【adj.电子的】

equipments.DistributionSystem

Constitution:—mainairdistributionsystem;—flightcompartmentconditionedairdistributionsystem;—passengercabinconditionedairdistributionsystem;—recirculationsystem;—ventilationsystem;—equipmentcoolingsystem.DistributionSystemConstitutionandlocationofdistributionsystemDistributionSystemThemainairdistributionsystemcangetairfromairconditioningpacks【n.一群；一副】,groundconditionedairsourceorrecirculationsystem.Themaindistributionmanifold【n.歧管；总管】

collectsandmixesairfromanycombinationofthesourcesandthensuppliesairtothepassengercompartmentthroughriserducts【立管】

andanoverheaddistributionmanifold.DistributionSystemDistributionSystemThemainairdistributioncomponentsareinthedistributioncompartment

aftoftheforwardcargocomparment.主空气分配部件位于前货仓后面的分配舱内。Therearemanifoldsandductsalongthesidewallsandabovetheceilingareaofthepassengercabin.DistributionSystemTheflightcompartmentconditionedairdistributionsystemsuppliesconditionedairtotheflightcrew.Theleftairconditioningpacksuppliestheconditionedairfortheflightcompartment.Theairflowsthroughductsthatgoforwardalongtheleftsideoftheairplane.Theflightcompartmentdistributionusesdifferentductsthanthepassengercompartmentdistribution.DistributionSystemTheflightcompartmentgetsconditionedairfromtherightpackiftheleftpackisnotoperational.Theflightcompartmentdistributionletstheflightcrewselectadifferentairtemperaturethantheotherareasoftheairplane.Theflightcompartmenthassomediffusers【n.扩散器；扩压器】andoutletsforboththecaptain【n.船长；机长】andfirstofficer【F/O副驾驶】.DistributionSystemThepassengercabinconditionedairdistributionsystem

divides【v.划分；分配】theflowofconditionedairtothepassengercabin.Conditionedairfromthemaindistributionmanifoldflowsthroughsidewallriserducts.Theriserductsfollowtheairplanecontour【n.外形；轮廓】alongtherightandleftfuselage.DistributionSystemPassengercabinconditionedairdistributionDistributionSystemTheriserductssupplytheoverheaddistributionducts.Theoverheaddistributionductsarelongitudinallyalongthetopcenterofthepassengercabin.DistributionSystemConditionedairfromtheoverheaddistributionductsflowstothesidewalldiffuseroutletsandplenum/nozzleassembliesthroughflexiblehosesandmufflers.来自顶部分配管道的空调空气流经柔性软管和消音器到达侧壁的扩散器出口和顶部的集气/喷嘴组件。DistributionSystem

PassengercabinconditionedairdistributionDistributionSystemThepassengercabinexhaust【v.排出；排气】airflowsthroughfloorgrilles【n.格栅；栏栅】totherecirculationsystemoroverboard.DistributionSystemTherecirculationsystem

recycles【v.回收利用】approximately50percentofthecabinairforventilationpurposes.Thisreducesthequantityoffreshairfromthepneumaticsystemforventilation.Therecirculationcomponentsincludecollectorshroud【n.覆盖物；护罩】,airfilter,fanandcheckvalve.Theyarelocatedinthedistributioncompartment.DistributionSystemRecirculationsystemDistributionSystemTherecirculationfancreatsalowpressurezoneinthecollectorshroud.Thecollectorshroudisintheceilingoftheforwardcargocompartment.Therecirculationairfilterremovessmallparticlesofmaterialfromtheairthatflowsbacktothepassengercabin.再循环空气滤除掉流回到客舱的空气中的物质颗粒。DistributionSystemTherecirculationfancheckvalvepreventstheflowofconditionedairoutofthemaindistributionmanifoldthroughtherecirculationsystem.DistributionSystemTheventilationsystemusesdifferentialpressure【压差】,cabin-to-ambient【adj.环境；周围的】,toremoveairoutoftheairplanebysuction【n.吸，抽吸】.Theairmovesthroughoverboardvents【n.排气口；通风口】fromthecabingalleyandthelavatoryareas.DistributionSystemGalleyventilationsystemDistributionSystemgalleyDistributionSystemTheequipmentcoolingsystemremovesheatfromelectroniccomponentsintheflightcompartmentandtheelcetricalandelectronic(E/E)compartment.Thesystemusescabinairtoremoveheatfromequipment.Ithassupplysystemandexhaustsystem.Thesupplysystemandtheexhaustsystemusefanstomoveair.Eachsystemhasaprimaryfanandanalternatefan.Thesupplyandexhaustfansmoveairthroughductsandmanifolds.Theductsandmanifoldsconnecttoshroudsaroundtheelectronicandelectricalequipment.DistributionSystemEquipmentcoolingsystemDistributionSystemTheoverboardexhaustvalveletsexhaustairgooverboardwhentheairplaneisontheground.Theexhaustairsupplements【v.增补，补充】heatintheforwardcargocompartmentinflight.Lowflowsensorsmonitortheductsforcoolingflowconditions.Whenalowflow,ornotsufficientcoolingconditionoccurs,thelowflowsensorsuppliesandalarmsignaltotheflightcompartmentforannunciation【n.宣告】.DistributionSystemFrontrearE&EbayDistributionSystemThemainsupplysystemcomponentsarelocatedintherightsidewallsectionoftheEEcompartment.Thesupplyductextendsforwardalongtherightsidewall.Itdividestosupplytheequipmentracks【n.支架，机架】intheEEcompartmentandthepanelsintheflightcompartment.ThemainexhaustsystemcomponentsarelocatedintheaftlowersectionoftheEEcompartent.DistributionSystemE&EbayoverboardexhaustvalveCoolingSystemFunction:Thecoolingsystemcontrolsthequantityofairfromthepneumaticsystemtothepack,removesheatfromtheairthatentersthepackandcontroltheoutputtemperatureofthepack.Therearetwoairconditioningpacks(Left&Right).Theyareintheairconditioningcompartments.Theairconditioningcompartmentsareontheleftandrightsidesofthekeelbeam【底部大梁】inthewing-to-bodyarea.CoolingSystemRamairinletCoolingSystemAccessisfromthebottomoftheairplanefuselage.Theusualcontrolfortheleftpackmakessurethatitsuppliesairatatemperaturethatgivesthenecessarycoolingfortheflightcompartment.左空调组件的正常控制确保它能够提供使驾驶舱获得必要冷却的一定温度的空气。Thecontrolfortherightpackmakessurethatitsuppliesairatatemperaturethatgivesthenecessarycoolingforthepassengercompartment.CoolingSystemCoolingSystemMaincomponents:airconditioning/bleedaircontrolspanelflowcontrolshutoffvalve(FCSOV)【流量控制关断阀】primaryheatexchangersecondaryheatexchangeraircyclemachine(ACM)【空气循环机】ramairsystem【冲压空气系统】anti-icesystem【防冰系统】waterseparator【脱水器】CoolingSystem737-700CoolingSystem737-800①②③④CoolingSystemTheairconditioning/bleedaircontrolspanelgivescontrolandindicationsofthecoolingsystem.It'sontheP5forwardoverheadpanel.CoolingSystem737-700Airconditioning/Bleedairpanel737-800Airconditioning/BleedairpanelCoolingSystemTheflowcontrolandshutoffvalve(FCSOV)controlsthequantityofairintotheairconditioningsystem.Anairmixvalveortemperaturecontrolvalve(TCV)【温度控制活门】dividesairfromtheflowcontrolandshutoffvalveintohotandcoldstreams【n.流；河流】.Thisvalveadjuststheproportion【n.比；比率】ofairthatgoesintooraroundthepack.Theproportionofairthatgoesintothepackcontrolstheairtemperatureintothecabin.TheairmixvalveorTCVispartofthetemperaturecontrolsubsystem.CoolingSystemTheprimaryheatexchanger【初级热交换器】

receivesbleedairfromtheflowcontrolandshutoffvalve.Asthebleedairgoesthroughtheheatexchanger,ramair【冲击气流】

removesheat.Thecooledbleedairgoestothecompressorsectionoftheaircyclemachine.CoolingSystemThesecondaryheatexchanger

receivescompressedairfromtheaircyclemachine.Astheairgoesthroughtheheatexchanger,ramairremovesheat.Afterthecompressedairiscooled,itgoesbacktotheaircyclemachine.CoolingSystemThereisanaircyclemachine(ACM)foreachoftheleftandrightpacksystem.TheACMisathree-wheelairbearing

aircyclemachine.左右组件系统各有一个空气循环机。该空气循环机是采用空气轴承的三轮式空气循环机。Itdecreasesairtemperaturebyexpansion【n.膨胀；扩大】throughaturbine.Itiscomprisedof

turbine,compressorandfanwhichareconnectedbyacommonshaft.它由通过一根共同的轴连接的涡轮、压气机和风扇组成。CoolingSystemTheairbearingslettheACMturnathighspeedwithlittlefriction.Cooledbleedairfromtheprimaryheatexchangerenterstheaircyclemachineandiscompressed.Thecompressedairthengoestoasecondaryheatexchangerandbacktotheaircyclemachine.Moisture【n.水分；湿气】

canberemovedfromtheairbeforeenteringintotheturbineofACMorafterexpendingfromit,dependingontheaircraftmodel.CoolingSystemTheramairsystem

controlsthequantityofoutsideambientairthatflowsthroughtheheatexchangers.Thewaterseparatorcollectsandremovesmoisturefromtheairbeforeitgoesintothedistributionsystem.Therearetwodifferentwaterseparators:lowpressurewaterseparatorandhighpressurewaterseparator.Theformerisusedon737-600/700andthelatterisusedon737-800/900.Theanti-icesystempreventsthewaterseparator,ACMorcondenser【n.冷凝器；电容器】

fromfreezing.CoolingSystemLowpressurewaterseparatorCoolingSystemThisisbeingusedmorefrequentlyasairportsstartbanningtheuseoftheAPUontheground.Pre-conditionedairisattachedherestraightintothemixmanifold.TemperatureControlSystemFunction:Thetemperaturecontrolsystemcontrolstheairtemperatureinthepassengercompartmentandtheflightcompartment.Itcanoperatewhentheairconditioningpacksoperate.TemperatureControlSystemUsingB737-700temperaturecontrolsystemasaexample(737-800isdifferentfromit) Maincomponents:temperaturecontrolpanelairconditioningaccessoryunit(ACAU)【空调附件装置】cabintemperaturecontroller(CTC)【座舱温度控制器】airmixvalveoverheatswitches

temperaturebulbs【测温包；热敏元件】TemperatureControlSystemBoeing737-700temperaturecontrolsystemTemperatureControlSystemTheairconditioningaccessoryunit(ACAU)

monitorstheoperationlogicforthepneumaticandairconditioningsystem.Itenablesthetemperaturecontrolsystemwhentheairsystemsareserviceable【adj.有用的；可用的】.TemperatureControlSystemThecabintemperaturecontroller(CTC)

receivessignalsfromthetemperaturecontrolpanel.Temperaturesensors【n.传感器；探测器】

sendtemperaturedatafromtheflightandpassengercompartments.TheCTCsendscontrolandoperationsignalsthroughtheACAUforautomatictemperaturecontrol.TemperatureControlSystemBoeing737-700temperaturecontrolsystemTemperatureControlSystemThetemperaturecontrolsignalsgototheairmixvalve.Theairmixvalvecontrolstheamountofairthatgoestothepackorgoestoheatairdownstreamofthepack.Thetemperaturecontrolsystemhasoverheatswitchesinthesupplyducts.Theoverheatswitchesgiveindicationandcanstopoperationwhenthetemperatureisoutoflimits.TemperatureControlSystemBoeing737-700temperaturecontrolsystemTemperatureControlSystemTemperaturebulbs

inthepassengercabinandductmonitorandsendtemperaturedatatothecabintemperaturecontrolpanel.Thetemperautrecontrolpanelshowsairtempreaturesandtheairmixvalveposition.TemperatureControlSystemDuringoperation,thetemperaturecontrolhastwomodes【n.模式；方式】,AUTOandMANUAL.IntheAUTOmode,thecoolorwarmsignalfromtheselectorswitchgoestothecabintemperaturecontroller(CTC).TheCTCcomparestheselector(temperature)inputtoinputsfromtheducttemperatureanticipator【n.预感器】,

ductlimitsensorandcabintemperaturesensor.TheCTCmonitorsthesensorinputs.Itcalculatesthecorrecttemperautreforthepackair.TheCTCsendsasignaltosetthepositionoftheairmixvalve.TemperatureControlSystemTemperatureControlSystemThesignalgoesthroughrelays【n.继电器】

intheACAU.Theairmixvalveadjuststhehotandcoldairstreamsofthepacktogivethecorrectairtemperature.TheCTCcontinuouslymeasuresthet