1. Dab tsi yog thawj qhov zoo ntawm kev siv cov leeg ntoo dua tooj liab hauv hvac system?
Teb:
Aluminium cov leeg muaj cov txiaj ntsig tseem ceeb ua rau lawv nce ntxiv hauv cov txiaj ntsig niaj hnub no. Lawv cov txiaj ntsig tseem ceeb tshaj; Aluminium Tubes muaj kwv yees li 60% tus nqi sib npaug ntawm tooj liab, thiab txhuas txoj kev ua haujlwm tau txais txiaj ntsig, ib puag ncig 210 w / minch. W / min k), tab sis qhov no yog optiming optimizations zoo li qub {} {{9} AliE Alide, ntau dua yog ntau dua nrog cov tub yees tsis muaj txiaj ntsig zoo li niaj hnub no thiab niaj hnub cov tub yees tsis sib xws li R32 thiab R290 (propane), txo qhov sib xyaw kev txhawj xeeb txog kev tsim khoom thiab ua kom muaj zog tsawg dua, xav tau qhov hloov dua tshiab yam tsis muaj kev txaus ntshai ntawm cov khoom.
2. Dab tsi specifications thiab cov qauv yuav tsum tau txiav txim siab thaum xaiv cov leeg aluminium rau HVAC Cheebtsam?
Teb:
Xaiv cov raj luv txhuas lub raj yuav tsum tau ua tib zoo xav txog cov qauv tshwj xeeb thiab kev ua raws li tus qauv sab nraud. Qhov tseem ceeb ntawm cov qauv muaj xws liASTM B483(Npog seamless, welded leeg) uas qhia txog cov cheeb tsam dev tev ({{{}} ± 10%), thiab qhov yuav tsum tau ua. Cov khoom siv neeg kho tshuab yog tswj hwm los ntawmASTM B209(Rau yob cov raj hauv av), ua kom muaj zog tshaj plaws tensile lub zog (e {}}Iso 2859-1Cov qauv kev ntsuas cov qauv yog qhov tseem ceeb, feem ntau yuav tsum muaj Helium Mass Spectrometry kev sim siab dua 1x10}}}}} aliroly xaiv yog tseem ceeb:3003 alloyMuaj kev tiv thaiv corrosion zoo heev rau cov neeg ua kom dej thiab headers,6061/6063 alloysMuab cov kev sib zog ua kom muaj zog rau-luj rau cov txheej txheem qauv thiab cov kab tub yees, thiab cov ntawv tshwj xeeb brazing alloys zoo li4343/4045 claddingSiv rau kev hloov pauv cua sov .} phab ntsa thickness yuav tsum tau xaiv raws li kev ua haujlwm ntawm kev ua haujlwm; Cov kab ntawv kaw suab tub yees (OD 9. 52mm {{{{{} mu} mu} mm phab ntsa rau pressures txog 35 bar. Microchannel txoj kev muaj tshwj xeeb cov lus qhia tshwj xeeb uas muaj chaw nres nkoj loj, cov duab, phab ntsa thickness uniformity, thiab tawg tawg.
3. Dab tsi yog qhov kev coj ua zoo tshaj plaws rau koom nrog txhuas tubing hauv HVAC kev teeb tsa?
Teb:
Kev Koom Tes Txhim Kho yog qhov tseem ceeb rau kev ntseeg siab thiab kev ua haujlwm ntev}}} peb qib tseem ceeb yog siv:
Brazing:Feem ntau HVAC txoj kev hvac . Koj yuav tsum tau txhuas-silicon tub lim hlau nplaum (4047 alloy, Melting point 577 degree) nrog rau kev tshwj xeeb flux kom tsis txhob muaj qhov ntsuas oxide ({}}
Neeg kho tshuab koom nrog:Siv cov laub-rau-txuas fittings nrogEPDM lossis HNBR ntsaws ruajNtsuas rau tub yees rau lub tub yees thiab ua kev ntsuas tshaj 35 bar {{luas} Txoj kev ua kom sov
Vuam (Tig / Mig):Siv rau cov hlab loj dua lossis cov kev sib txuas sib txuas . yuav tsum tau5356 lossis 4043 Cov HlauThiab100% Argon Shielding Roj{{0. nruj nplaim taws nrog stainless hlau hlau) thiab cov kuab tshuaj barbon) thiab cov kuab tshuaj me me ua ntej vuam .
Cov kev coj ua zoo tshaj plaws muaj xws li kev tswj hwm0.1-0.3 hli sib txawvRau brazing capillary ntws, tsis txhob muaj kev sib kis noo noo thaum lub sij hawm ntsuas cov txheej txheem sib txawv ntawm cov qauv .
4. Yuav ua li cas ua cov tub yees sib txawv cov tub yees ua tau zoo thiab ntev ntawm txhuas hvac tubing?
Teb:
Tub yees xaiv xaiv tau cuam tshuam dhau lub raj ua kev ua tau zoo:
R410A:Nws cov kev ua haujlwm siab tshaj tawm (txog li 45 bar) yuav tsum tau xyuam xim raj thiab sib koom tes ua tau zoo, tab sis kev kho kom huv (<100 ppm) are critical to prevent acid formation from hydrolysis.
R32:Muaj cov khoom noj tau zoo heev nrog txhuas. nws butting raj hluav taws xob tso cai rau cov tshuab raj thij Kub (tech).}
R290 (propane):Kev ntsuas kev nyab xeeb heev rau kev sib koom tes nrog kev ua kom muaj kev sib raug zoo nyob rau hauv kev ua kom ncaj ncees vim muaj kev phom sij
R454B / R447A (A2L qis dua cov nplaim taws):Kev sib raug zoo yog feem ntau zoo, tab sis roj nplua nyeem (poe roj) xaiv thiab noo tswj tau me ntsis tuaj yeem nruj dua li r 32.
R717 (Ammonia):Yuav tsum muaj kev ceev faj heev . Thaum siv cov kws tshaj lij, kev ntxhov siab yog qhov tsim nyog, muaj kev ntxhov siab.
Aluminium feem ntau muaj cov txiaj ntsig zoo tshaj plaws piv rau tus copper nrog cov tub yees HFC thiab cov txheej txheem kev txhim kho / kho kom zoo / kho tau zoo /.
5. Dab tsi yog kev saib xyuas thiab tshuaj xyuas cov kev cai ua kom tiav lub neej ntawm txhuas tubing hauv hvac system?
Teb:
Cov txij nkawm tu siab tau nthuav dav txhuas raj dhau 20 xyoo:
Kev Tshawb Xyuas Txhua Xyoo:Tsom rau fittings, pob qij txha, txhawb nqa lub ntsiab lus rau cov cim ntawm kev ua kom tawg sab nraud (dentse,
Kev Tswj Xyuas:Hloov keveddy kev sim tam sim no lossis ultrasonic tuab gauging every 3-5 years, especially in critical sections and bends, to detect wall thinning exceeding 0.2mm/year. Monitor system pressure logs for anomalies indicating internal fouling or restriction.
Cov txheej txheem tu:Siv xwbPH-nruab nrab tu cov kev daws (6.5-7.5)Rau kauj tu . acidic lossis muaj zog}}}} Nrhiav tau cov lauj kaub yog khib nyiab dawb} {4}
Corrosion tiv thaiv:Nyob rau hauv cov corrosive ib puag ncig (ntug dej hiav txwv, cov nroj tsuag tshuaj), thovPVDF (polyvinylidene fluoride) Txau Txheej TxheemMus rau sab nraud ntawm ntug dej .} Nrhiav kom tiv thaiv cov galvanic uas muaj cov roj av (siv cov gavers) .
Kev Tswj Xyuas Kev Noj Qab Haus Huv:Muab cov nqi them rau lub tub yees rau lub tub yees kom ntseeg tau tias cov roj rov qab kom zoo thiab tiv thaiv kev ua kom muaj zog acid {} Cia noo noo<100 ppm) via functional driers and leak-free seals. Use freeze protection fluids (e.g., glycol) at >20% concentration uas yuav tsum tau .}}}}} ntaub ntawv txhua yam kev saib xyuas thiab pom kev ua tib zoo saib xyuas.
