I-aluminum ilondoloza i-copper kumongo wokulimala kwezimali

Amathuba Endaweni Yokuthuthuka Kwesilimi Kwi-AC Systems

Ukuguqulwa kwi-aluminum components kwiinduku zokulibaza kuya ngokukhanya njengoko abafumathi bafundisa ukuguquka kwezimali ze-copper nokwenzeka kwazo. I-aluminum ikhulula i-copper kwiindlela ezibalulekileyo—akungeyona into efanayo kodwa yinto ephumelelayo—yophelelwa yiindima zomnotho, ukuzimisa kwegunya lokulisha, nezimiso zokuphila ngokudlalela.

Ukuhamba Kwemali Nokuguquka Kwezimali Ze-Copper Kuthuthukisa Ukushintshana Kwematerial

Igcinwa le-copper likhula kangakanani, ngamuhla ilahlela kakhulu kune-25% ngonyaka okwenzekayo ukugcina izindleko zokwakha. I-aluminum yishe yincane kakhulu, ikhokhelana phakathi kwe-40 kuya ku-60 iphesenti ngaphansi ngalipundo, ngakho kuyisemthetho endiza kubo abasebenza kumasebe amaduna noma emisebenzi encane aphindaphindi lapho imali iyisikhathi esikhulu. Ngenkathi i-copper inikeza umshunqo wamandla ngokukhanya kunalu-aluminum (ngaphezu kwe-401 ngaphambi kwe-237 W/mK), ubuchwepheshe obuhle bungabalisa le mahlulelo. Abachwepheshe bahlela izinto ezithile njengezikhumba ze-fin, basebenzisa indlela ebaleni tube, bamelene nezinhlangano ukuze izinhlayiya ze-aluminum zilondolele izimo ze-ASHRAE Standard 90.1 futhi zizondele izilinganiso eziphambene kakhulu. Ngemuva kokuba izindleko zomshunqo zakhala, i-aluminum ibecela kakhulu uma kubhekwa kuzodinga ngokuphelele kwalokho okulondoloza ngaphandle kokuthinta kakhulu izilinganiso eziphambene kakhulu.

Ukungaqedi kwezimali zomlando kanye nokuguquka kwesiko sokuthenga

Isimo samanje nge-copper sikhathazo kakhulu ngokungahle kwemiphakathi yasendleleni nezinkinga eminingwini. Kangaphezu kwehlvesi yoko sinikeza kusuka emaphakathini apho isimo sezopolitiki asihle kakhulu noma akhona izinkinga ezinye. Kodwa-ke i-aluminum ibhalisa ingxenye eyodwa. Sitholile konke okudingayo kuleli goli, kanye nokuzalwa kwenziwa kuwo wonke indawo ukusuka eNorth America, eEurope futhi kuya eAsia. Lokhu kusho ukuthi amakhampini angathola empilweni yabo endaweni esebenzayo, engavaleli iminyaka yokuthunyelwa, kanti ubuyiselo bube yizinkulungwane zeshumi nje ngamnye. Okwenzela ukuthi i-aluminum ibuyeke ngcono kakhulu yindlela ayorholwayo ekubeni iyaphuhliseka. Xa bayenza i-aluminum kusukuma mali ebukekayo, ihlala ikhetha kuphela ama-5% wamandla abadingayo ekuzaleni entsha. Lokhu kujula amanzi aqhubekayo kancane-ncane ngama-8 ethoni egciniwe ngamayithoni angamnye wamali abukekayo. Lezi zimphakathi zezimali azikwazi kuba njalo kwalokhu kumhlaba. Zifakelana kakhulu kumthetho owuthuthukayo njengaleso kwe-EU ngokudizayina kwezinhloso kanye nemithetho yamandla e-America. Kuma-manufacturers ababonga ukufinyelela kumahluko wokuphila kodwa bafanele bahlale behlakaniphi, ukubukeka kwe-aluminum kunezidingo ezikhulu.

Ukuziphatha Kwezenzo: Uthuli Olusezinzini Nenovithela Yendawo

Isixwayiso Secondusela Kwe-Thermal: Kungani I-Aluminum (237 W/m·K) Ifuna Ukulungiswa Kweenjineri

Xa kufaneleka ukulula kwezimali, ihhalamani ayikwazi ukuvikela ngekhopha. Izinombolo zibonisa ukuthi ihhalamani ilula ngokungafani kangaka ngekhopha ngama-41%, lokhu kusho ukuthi abasebenzi besayensi kumele badinge ngaphezu kokucabanga ekukwenza izinhlelo zabo uma bafuna ukuletha iqiniso elihle le-heat transfer, ikakhulu emaphakethini njengalokho evaporation kunye condensers apho lokhu kubaluleke kakhulu. Ngokwemfundo ye-ASHRAE, izinqumo ezisebenzisa ihhalamani zidinga ngaphezu kuka-15% kuze kube ngu-20% wehhandlangu engeyiyo noma yisiphi isiphumo esihlotshanayo ukuze sifinyelele ekutholeni okuthile kuphela okuchazwe ngu-copper systems engenazo izinkinga. Abasebenzi basegorofu basephatha izinyathelo eziphulwa kulolu daba. Ezinye izindlela zihlanganisa i-fin shapes eziphambene ne-boundary layers, kodwa ezinye zazingqayizivele kwenza i-patterns encinci ngaphakathi kwetiyubhu ukwakha kancinci intonga. Kunezinye izibalo ezintsha ezikhona manje ezingekela ukulula ngama-8 kuze kube ngu-12% kakuhle kungehhalamani engu-3003 ehlekile.

Izihlaka Zokuhlanjwa Kwamahhala: Kangakanani Okuphakanyisiwe Kusebe Nokulungiswa Kwehlangothi Kukhulula Ukungeniswa Kwemali Ephantsi Yaluminum

Isizathu sokuthi aluminum sifana nokwenza kakhulu sihlwa teknoloji yesihlaka esincane. Lezi sistimi zihlanganisa izitshalo ezimbhalo ephinde-phinde nezigaba ezimfushane ezahlukene, zenzela okugcwele amaphawu athathu kangcono kungezikhwama eziphethilene. Abasebenzi basebenzisa izibalo zokuhlaza kwamahhala (CFD) ukuze bakhumule kanjani amahhala ahlanza kule zihlaka. Lokhu kusiza ekukhululeni kwezinhlangothi zokwenyuka ngokwesiphazamiso ngenxa yokuhlanjelana okuphakanyisiwe. Isiphumo? Izinxeba ze-aluminum microchannel zingahlanya njengazo eziphethilene kodwa zidinga amafrigent ethile ngaphezu kuka-30%. Lokhu kubalulekile kakhulu kumakhampani ozama ukuthuthukisa inkorekisa futhi ushintshela amahhala afika phansi kweglobal warming potential.

Ukuhlaziywa okwamandla manje kuvikisha ukuthi izixhobo zokuthatha isithunzi se-aluminum microchannel zihlala zihlanganisa noma ziyekisela i-ASHRAE 90.1 iminimumu yokwefficiency—kuvikisha indima yazo kumalini wokugcina we-AC apho ukunciphisa ubungo, ukukhathala kokucopheleka, nokugcina kwegazi refrigerant kubalulekile.

Imida yesimilo fanye nezindlela zokulungisa izinkinga zeziphakethe se-aluminum

Izingcingco zokucopheleka: Ukudonsa, Ukudibanisa Kwegalvani, Nezinkinga Zemifula Epholile/Nezimali

I-aluminum iba neminyaka engcono kunaluqobo ngokuvikela kwayo okuqukethwe, kodwa inemiba engezansi yokuqhakama nokulahleka kwegalvanic, ikakhulu ematheleni edlulwini noma kuzo zizindawo eziphephile kumoya. Xa ishumi siphinde sisuswe, ukulahleka kokuqhakama kuhlala kakhulu ngokungafaniyo—ngamanye amazwi, kungahlala kakhulu kangaka kwabangela izilinganiso ezimbalwa. Nakuba i-aluminum ingaphakathi kumakhasi ocali, imithetho yekhemikhali ihlala iyasebenza ethintayo le-coils ze-aluminum ngexesha. Isifundo esisha se-ASHRAE esenzelwe 2023 sabonakala into ethile eyayiqinisekisa. Sabonile ukuba i-coils ze-aluminum ezingavakalanga emaqhumathanweni apholile ahlulela ngokukhawuleza—ngoko ke 22% kunazo zazingaphaya kwezo zililiwe ngu-copper. Lokhu kuthatha indima ekubeni kufunekayo ukulungiselela nokulingana kwezixhobo.

Ubunzima Bekugqibela, Uguquko Lwe-Brazing, Nezixhobo Zokuvakalisa Ezinenjalo Echazayo Ubude Bokusebenza

Ukugcina ubudlelwane obudlelane, abayikezi bakhuselela iindlela ezine ezivumelekileyo:

• Ukubhinda okungahlukahluki , ukususa izikhumba ze-halide ezingenziwa yizimuqimba ezibophezela kumthwalo wokuhlahlana ema-microchannel
• Izinkuni ezisekelwe ku-silane , zifakwa ngokufaka noma ukushaya, ekuthulaseni i-pitting ebangelwa yisathile ngaphezu kuka-90% kuzivikelo ezinzululwayo
• Ukunikelwa kwe-anode yokuphela , efakwe kwi-header yecoil ukuze ikhubaze amawele a-galvanic
• Izihlangothi ze-aluminum ezifakwe kwi-polymer , eqinisekisa ukuthula kwe-aluminum kusuka kuzo zonke izixhumanisi ze-copper

Konke okuqukethwe kuzinye izisombululo kutholile ivalekileyo ye-10-year salt-spray (ASTM B117), ekutholeni ukuthi izithombe ze-aluminum zifinyelela inyaniso engu-15-year service life—nakuba emakhondlo enhlangothini ethintekayo—ngaphandle kokulahleka kwesiphazamiso noma isebenza sendawo.

Imibuzo Evame Ukubuzwa

Kungani ke-aluminum esetshenziswa kangakanani emasistemeni eAC?

Kusetshenziswa kwe-aluminum ngoba kokugcinwa kwemali, ubuchwepheshe bukhi waphakade be-copper, nokukhulunywa kwegcobo lefunda. Kuyinto eqashelwe khona kunokuthi ikhetho engu-copper, ethola imiphumela emihle ngendlela yokuphelisa nokhawula.

Kunjani ukulinganisa kwezinto ze-aluminum ne-copper ngokulingana nokuthutha kwesibindi?

I-aluminum ithutha isibindi ngama-41% ngaphansi kuka-copper, kodwa izimo ezintsha zokulungisa, njengezenzo eziphucukileyo zezimpapaza ne-teknoloji ye-microchannel, zisiza ekubhedleni loluhlu.

Kuzomunye umculo owahlukene ngokusebenzisa i-aluminum emasiningeni AC?

I-aluminum inehluko ngokuphazanyika kwebumba futhi kuthinta kakhulu emasiningeni apholile kanye namandla esiya, ikakhulu emasiningeni apholile kanye nama-saline. Izindlela zokuphatha njenge-brazing engaqhashanga nokulahla kwezinkuni ze-silane zisetshenziswa ukuze kuthintelwe lezi zinkinga.

Kuzonke ziphumala ngezempilo eziqinisekile zazinga-luminum?

Ukubuyisela umlondolozi kusetyenziswa kuphela kwimitha engu-5% yeziko lokufumana ngendlela ekuphucukeni kakhulu ukuphuma kwegasi. Le mbenefiti ihlanganisa nezivumelwano eziningi kakhulu ngokulungiswa kwezixhobo kunye nesivumelwano seziko sangaphandle.