SectionFive

Unit16:HowtoCleaningRoomAirConditionerUnit17:RefrigerantLeakDetectionUnit18:DuctCleaningUnit17:RefrigerantLeakDetectionNewWords&ExpressionsTextNotestothe

TextExerciseNewWords&Expressions

冷凝器

，電容器pressurized

adj.加壓的,受壓的HVACHeating,VentilatingandAirConditioning采暖通風(fēng)與空調(diào)tightadj.adv.

緊的，密集的；

牢固地pose

vt.n.

引起，產(chǎn)生；

姿勢,姿態(tài)Freon

n.

氟利昂accumulator

n.〈英〉蓄電池,積聚者累加器liquidslugging液擊

rust

vt.&vi.n.

(使)生銹；鐵銹

，銹菌

毛細(xì)管capillarytubes彎道；(使)彎曲，使）拐彎

bend

n.vt.&vi.condenser

n.NewWords&Expressions

(聲波)超聲的;超音速的

超聲波evaporator

n.

蒸發(fā)器，脫水器penetrate

vt.vi.穿透，刺入，滲入，明了；穿入，滲入sprayvt.&vi.n.噴灑；噴劑，噴霧器dabbern.輕敷者,上墨皮墊immersionn.沉浸，浸沒，洗禮

，專心，陷入鹵素管，檢鹵漏燈

Halidetorch

使氯發(fā)生作用，用氯消毒；綠色的chlorinatedv.adj.hydrocarbonfuel

烴類燃料halogenated【醫(yī)】鹵代的bluishadj.

接近藍(lán)色的,淺藍(lán)的ultrasonicadj.n.

NewWords&Expressions鹵族identifyvt.

認(rèn)出,識別

，CFCs氯氟烴Chlorinen.

<化>氯HCFCs氫氯氟碳化物Fluorine氟HFCs【化】果葡糖漿non-ozone-depleting臭氧消耗plusbromine溴化物衍生物HBFCs氫氯氟碳化物

HalogensText

所有的壓力暖通空調(diào)系統(tǒng)都可能發(fā)生制冷劑泄漏。雖然密封的系統(tǒng)—--微量的泄漏不影響整個系統(tǒng)的性能—---不會產(chǎn)生這個問題，泄漏越來越嚴(yán)重隨時會發(fā)生?？照{(diào)系統(tǒng)為什么會發(fā)生氟利昂或制冷劑泄漏，有以下幾種原因。Allpressurized

HVACsystemscanprobablyleakrefrigerant.Althoughatightsystemwithminimalleakagedoesn'taffectsystemperformancemaynotposetheproblem,amoreseriousleakwilldoso,andcouldoccuratanytime.1HerearesomereasonswhyyourairconditionerhasaFreonorrefrigerantleak.2Text

蓄熱器對于冬天提供熱量的熱泵系統(tǒng)來說是必要的，它可以保護(hù)壓縮機不發(fā)生液擊現(xiàn)象。蓄熱器通常是鋼制的，幾年后開始生銹。這些銹孔會發(fā)生氟利昂或制冷劑的泄漏。毛細(xì)管是非常細(xì)的銅管，在毛細(xì)管上會有小孔產(chǎn)生，這里也會發(fā)生少量制冷劑泄漏。Accumulatorsarenecessaryfortheheatpumpsystemtoprovideheatinthewinterandprotectthecompressorfromliquidslugging.Accumulatorsareusuallymadeofsteelandafterafewyearstheybegintorust.TheserustholesallowFreonorrefrigeranttoleakoutoftheheatpumpsystem.ThecapillarytubesareverysmallcoppertubesandaholeappearsonthecapillarytubeandFreonorrefrigerantleaksfromtheairconditioningorheatpumpsystem.Text

空調(diào)或熱泵系統(tǒng)中會有擴(kuò)口連接，在這些地方經(jīng)常會發(fā)生泄漏。一般這些擴(kuò)口很容易更換。更多的是在U型或彎曲盤管的頂端發(fā)生泄漏，一般這種情況很容易維修或者更換盤管也可以。過濾干燥器的外殼也是鋼制的。所以和蓄熱器的問題一樣，也會發(fā)生制冷劑的泄漏。從冷凝器到蒸發(fā)器盤管之間連接的管路，經(jīng)常發(fā)生穿透或損壞。Iftheairconditioningorheatpumpsystemhasanyexpandinglinks,leaksgenerallyoccurattheseconnection.Sometimestheseconnectionscaneasilyberepaired.Mostofthetimetheleaksinthecoilsoccurattheu-tubesorbendsincopperattheendofthecoil.Sometimesthiscanbeeasilyrepairedorothertimesitthecoilneedstobereplaced.Theoutershellofthefilterdryersismadeofsteel.Filterdryerthatisthesameastheheatpumpaccumulatormayoccurrefrigerantleak.3Thepipewhichcarriesrefrigerantbackandforthfromthecondensertotheevaporatorcoilisoftenpenetratedordamaged.Text

關(guān)于制冷劑檢漏有很多方法，系統(tǒng)的徹底診斷有時不僅需要一種方法。泡沫法：當(dāng)置于泄漏點時，會有泡沫產(chǎn)生。這種方法可以噴射、涂抹、刷也可以浸泡。這種方法可以在大致的區(qū)域精確的找到泄漏點鹵素?zé)舴ǎ航?jīng)常用于檢測氯化物制冷劑泄漏。銅制設(shè)備在碳?xì)浠衔锶剂霞訜岷?，會有火焰出現(xiàn)。如果鹵代制冷劑蒸汽存在，火焰會從藍(lán)色變?yōu)樗{(lán)綠色。Therearevariousmethodsofleakdetection,andmorethanonemethodmaybenecessarytodiagnosesystemthoroughly.Foammethodisakindofliquidsolution.Bubbleupwhentheliquidisplacedonaleaksite.Thesolutioncanbeappliedbyspray,dabber,brushorimmersion.Thetechniciancanusethismethodtoverifyspecificleakagepointswhenothermethodsindicateageneralarea.Halidetorchmethodisusedfordetectingchlorinatedrefrigerantleaks.Flamewillappearoveracopperelementheatedbyahydrocarbonfuel.Ifhalogenatedrefrigerantvaporsarepresent,theflamechangesfromabluecolortoabluishgreencolor.Text

電子制冷劑檢漏儀能使你非常精確的找到泄漏點。對于非常小的泄漏點來說，可以用綁帶或抹布纏繞包裹泄漏點來防止泄漏。超聲波檢漏儀是目前最先進(jìn)的檢漏儀器。它的原理是聲音檢測法。它可以精確檢測到最小的泄漏點而且可以辨別出所有的氟氯化碳（含氯），氫氯氟碳化物（含氟），氫氟碳化合物（對臭氧層沒有破壞作用），還有溴族氣體（包含在氫溴氟烴）和鹵族氣體。Aelectronicrefrigerantleakdetectorcangetyouveryclosetothelocationoftheleakandfromthereyoucangetmoreprecise.Forverysmallleaksyoucanwrapthesuspectedareabywrapsorragstotrytocontaintherefrigerant.UltrasonicLeakDetectorsarethenewesttooltofindrefrigerantleaks.It,sprincipleissounddetection.TheywillaccuratelydetectandmayidentifythesmallestofleaksandbeabletoidentifyallCFCs,(thosecontainingchlorine),HCFCs(thosecontainingfluorine)andHFCs(non-ozone-depletingrefrigerantsandcompounds),plusbrominegas(foundinHBFCs)andHalogens.NotestotheTextNotestotheText1.Althoughatightsystemwithminimalleakagethatdoesn'taffectsystemperformancemaynotposetheproblem,amoreseriousleakwilldoso,andcouldoccuratanytime.With引導(dǎo)的介詞短語結(jié)構(gòu)修飾atightsystem。that引導(dǎo)的結(jié)構(gòu)做minimalleakage的定語，修飾先行詞minimalleakage。although引導(dǎo)的從句放在主句前后均可，有時還可放在句中。although引導(dǎo)的從句不能與but,however連用，但可與yet,still連用。不能說：Althoughhewasold,butheworkedhard.應(yīng)把but去掉。當(dāng)然，保留but而去Although也可。類似的句子有：Althoughmanydifficultiesarestillahead,wearedeterminedtomakegreaterachievements.盡管在前面的道路上還有許多困難，但是，我們決心要取得更大的成就。

HeoftenhelpsmewithmyEnglishalthoughheisquitebusy.盡管他相當(dāng)忙，但是還常常幫我學(xué)英語。

NotestotheTextWhy引導(dǎo)的定語從句修飾說明reasons。Itis+thereason（that）+why句中的thereasons做定語從句的先行詞。2.HerearesomereasonswhyyourairconditionerhasaFreonorrefrigerantleak.NotestotheTextThat引導(dǎo)定語從句，修飾說明先行詞filterdryer。整個句子的謂語是mayoccur。翻譯為與熱泵回?zé)崞饕粯?，干燥過濾器也會發(fā)生制冷劑泄漏的問題。3.Filterdryerthati