Melemo ea Microchannel Heat Exchangers (MCHEs) Ha e Bapisoa le Traditional Heat Exchangers (Copper Tube Aluminium Fin Heat Exchangers)
Katleho e Phahameng ea ho Fetisetsa Mocheso
Li-MCHE li na le liteishene tse ngata haholo-tse nyane tsa phallo ea kahare (hangata bophara ba 0.1–2 mm) le sebaka se phahameng-ho{4}}karolelano ea molumo. Moralo ona o holisa khokahano lipakeng tsa mochini o fetisang mocheso (joaloka lihatsetsi joalo ka R134a kapa R404A) le bokaholimo ba mochini o futhumatsang mocheso, e nolofalletsang ho fetisa mocheso ka 42% kapa ho feta ha ho bapisoa le mefuta ea mapheo a khale a koporo{9}}. Moferefere o matlafalitsoeng oa mokelikeli ka har'a mechine e menyenyane e fokotsa ho hanyetsa mocheso le ho feta, e leng ho etsang hore li-MCHE li be tse loketseng bakeng sa{11}}maemo a ho boloka matla a kang lihatsetsi le lik'habete tsa pontšo.
Compact Size le Lightweight
E hahiloe ka-ka lisebelisoa tsohle tsa aluminium le mapheo a kopantsoeng-ka sebopeho sa li-flat tube (ka li-welding tse seamless), li-MCHE li momahane haholo ebile li bobebe. Ka kakaretso, li nka sebaka se ka tlase ho 32–51% 'me boima ba tsona bo ka tlase ho 42–61% ho feta koporo ea setso{7}e thehiloeng licheso tse nang le matla a tšoanang a ho fetisa mocheso. Monyetla ona ke oa bohlokoa bakeng sa sebaka{9}}lisebelisoa tse fokolang, joalo ka koloi e futhumatsang moea, yuniti ea sehatsetsi e kopaneng, kapa lisebelisoa tsa lapeng tsa HVAC.
Thepa e Tlase le Litšenyehelo tsa Ts'ebetso
Aluminium, thepa ea mantlha ea li-MCHE, e bitsa chelete e ngata-e sebetsa hantle ho feta koporo (e leng karolo ea mantlha ea li-exchange tsa setso), e fokotsa litšenyehelo tsa thepa e tala ka 20–30%. Ho feta moo, li-MCHE li hloka tefiso e nyane haholo ea sehatsetsi (ho fihla ho 50–70% ka tlase) ka lebaka la bophahamo ba tsona bo nyane, ho theola{6}litšenyehelo tsa nako e telele le ho tsamaisana le melaoana ea tikoloho (mohlala, F{9}}Melao ea khase) e thibelang tšebeliso e feteletseng ea sehatsetsi.
Tšepahala e Ntlafetseng ea Sebopeho
Mekhoa e tsoetseng pele ea tlhahiso (mohlala, vacuum brazing bakeng sa-karolo ea aluminium) e theha maqhama pakeng tsa mapheoana le li-tubes tse bataletseng ka li-MCHE, ho felisa likheo tse bakang hore mocheso o se ke oa chesa kapa ho lutla ha sehatsetsi ka har'a li-fin exchanger{3}. Sebopeho sena se se nang moeli se boetse se ntlafatsa ho hanyetsa ho thothomela le ho palama baesekele e futhumetseng, ho lelefatsa bophelo ba ts'ebeletso libakeng tse matla (joaloka literaka tsa sehatsetsi tse tsamaeang).
Mathata a Microchannel Heat Exchangers (MCHEs) Ha a Bapisoa le Traditional Heat Exchangers.
Khanyetso e Tlaase ea Corrosion
Thepa ea aluminium, ha e le bobebe, e na le matla a tlase a ho bola ha a bapisoa le koporo{0}}haholo-holo libakeng tse thata (mohlala, litlhophiso tsa leoatle,{3}}libaka tse mongobo o phahameng, kapa tse nang le maro a asiti/a alkaline). Ntle le litlolo tse ling tse thibelang ho bola (mohlala, phenolic resin coatings), li-MCHE li ka 'na tsa tšoaroa ke aluminium oxidation kapa pitting, tse hlokang ho hlokomeloa khafetsa kapa ho nkeloa sebaka ha maemo a ruruhile.
Bothata bo Phahameng ba Tlhokomelo le Litšenyehelo
Moralo o kopaneng oa li-MCHE o etsa hore ho lokisoe ho be thata. Ho fapana le li-fin exchanger tsa setso ({1}moo li-tube tse senyehileng kapa mapheoana a ka nkeloang sebaka ka 'ngoe), phoso e le 'ngoe ho li-microchannel tsa MCHEs hangata e hloka ho nkela yuniti kaofela sebaka. Sena se eketsa litšenyehelo tsa tlhokomelo le nako ea ho fokotsa nako, haholo-holo{3}likopong tse kholo tsa indasteri.
Matsete a Phahameng a Phahamiso a Pele a Tlhahiso
Li-MCHE li hloka mahlale a ho etsa ka nepo (mohlala, -extrusion for flat tubes, high{3}}vacuum brazing) le lisebelisoa tse khethehileng. Le ha litšenyehelo tsa thepa li le tlase, matsete a ka pele mecheng ea tlhahiso e phahame ka makhetlo a 2-3 ho feta bakeng sa li-exchanger tsa mocheso tse tloaelehileng. Sena se etsa hore li-MCHE li fokotsehe chelete e ngata bakeng sa-tlhahiso e nyane kapa{9}liprojeke tsa tekanyetso e tlase.
Tekanyo e Lekanyelitsoeng ea{0}Mocheso o Phahameng
Aluminium's melting point (hoo e ka bang likhato tse 660) le botsitso ba mocheso bo tlase ho feta koporo ( ntlha ea ho qhibiliha ~ 1085℃). Maemong a phahameng-mocheso (mohlala, liboiler tsa liindasteri,{6}}ho khutlisa mocheso oa litšila tse phahameng), li-MCHE li ka ba le ts'ebetso e fokotsehileng ea sebopeho kapa ho sebetsa hantle ha mocheso, athe li-copper{7}lisebelisoa tsa khale li boloka tšebetso e ntlafetseng tlas'a maemo a joalo.
Boikutlo ba ho Khetha Lintho
Ha boholo ba mocha o le <0.5 mm, phapang ea ts'ebetso ea ho fetisa mocheso pakeng tsa lisebelisoa tse kang koporo le tšepe e sa hloekang e ka fihla ho 20%. Mehaho ea bohlokoa ea moralo e tlameha ho nahanoa ka botlalo hammoho le litlhoko tsa ho hanyetsa kutu.
Phallo ea Sebopeho sa Phallo ea Channel
Mehaho e rarahaneng ea likanale (mohlala, serpentine/serrated) e eketsa katleho ea phetisetso ea mocheso ka makhetlo a 1.2 ho isa ho 1.4 ha e bapisoa le likanale tse otlolohileng, empa hoa hlokahala ho leka-lekanya khoebo{4}ho tloha ho keketseho ea 15% -25% ea ho theoha ha khatello.
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