Retrofites HVAC Tshuab: Yuav ua li cas hloov ntawm R410a kom tsawg - hwp kev xaiv

 

 

Nyob rau hauv lub ntsej muag ntawm loj hlob ib puag ncig ib puag ncig kev txhawj xeeb thiab nruj cov kev tswj hwm nruj, cua sov, cua}}}}}}}}}}}} condition})) kev hloov pauv. Ib qho ntawm qhov tseem ceeb hloov yog qhov hloov ntawm high {2} Lub ntiaj teb sov sov muaj peev xwm (GWP) R410a, uas muaj GWP ntawm 2088, tau yog ib qho nrov tau cov tub yees hauv HVAC rau xyoo. Txawm li cas los xij, nws cov GWP siab ua rau muaj kev hloov huab cua, ua rau cov kev tshawb fawb ib puag ncig ib puag ncig. Cov ntawv no tshawb nrhiav cov laj thawj ntawm qhov kev hloov no, muaj qis- Kev xaiv GWP, thiab cov kauj ruam koom nrog Retrofitting HVAC cov tshuab.

 Cuam tshuam ib puag ncig

Qhov kev nias feem ntau rau kev txav mus deb ntawm R410a roj yog nws cov nyiaj tau los pab thoob ntiaj teb. Raws li cov teb chaws thoob ntiaj teb kev sib zog kom tau raws li lawv cov kev nyab xeeb hloov chaw nyob hauv kev cog lus xws li Daim Ntawv Cog Lus Paris, txo cov tub yees loj- cov tub yees loj. Tsawg {{4 4} gwp cov tub yees tuaj yeem pab ua kom cov kab hlau txo qis ntawm HVAC cov tshuab, ua rau lawv muaj ntau dua.

 Kev cai tswj xyuas nias

Kev tswj hwm lub cev thoob ntiaj teb tab tom siv cov kev cai nruj ua rau theem down ntawm kev siv siab {{cov tub yees. Piv txwv li, lub tsheb sib txuas lus Kigali Kev Hloov rau lub montreal raws prococol aims los txo kev ntau lawm thiab noj ntawm hydrofluorocarbons (HFCS), suav nrog R410a. Hauv Tebchaws Meskas, lub koomhaum tiv thaiv ib puag ncig (EPA) tau nruj kev cai los ntawm nws txoj cai xaiv tau tshiab (SNAP). Cov kev cai no tsis tsuas yog txhawb nqa kev saws me nyuam tsawg {5}

 R32​ 

R32 tau nce cov kab ke tseem ceeb ua qhov qis-} GWP xaiv rau R410a. Nrog GWP ntawm 675, nws yog ntau ntau ib puag ncig phooj ywg. Nws yog ib qho -} sib xyaw ua tub yees, uas txhais tau tias nws muaj cov khoom ntiag tug thoob plaws hauv lub system. R32 kuj tseem muaj lub zog ntau dua, muaj peev xwm dua me ntsis dua R410a. Qhov no tuaj yeem ua rau txo qis zog noj thiab cov nqi kev ua haujlwm qis dua. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nco ntsoov tias R32 tau raug cais ua A2L tub yees, uas txhais tau tias nws yog cov pa heev. Kev ceev faj tshwj xeeb kev nyab xeeb yuav tsum tau noj thaum lub sijhawm teeb tsa thiab kev txij nkawm, xws li siv qhov cua thiab xau}}}}}} nrhiav cov khoom siv.

 R454B​ 

R454B yog zeotropic sib xyaw ua ke xws li R32 (68.9%) thiab R1234YF (31.1%). Nws muaj GWP ntawm 466, uas yog qis dua li ntawm R410a. Ib qho ntawm qhov zoo ntawm R454B yog tias nws cov kev ua haujlwm tawm suab zoo kaw daim iav ntawm R410a. Qhov no ua rau nws yooj yim dua rau kev rov qab hvac cov tshuab uas muaj tam sim no thaum nws yuav tsum tau hloov pauv ntxiv rau cov cuab yeej tsim thiab cov txheej txheem kev pabcuam. Txawm li cas los xij, raws li ib qho zeotropic sib xyaw, nws ua pov thawj me ntsis kub glide ntawm nruab nrab ntawm npuas thiab lwg cov ntsiab lus, thiab frectionation tuaj yeem tshwm sim thaum txi. Cov kws tshaj lij yuav tsum paub txog cov yam ntxwv thaum ua haujlwm nrog R454B.

 R466A​

Honeywell's R466A yog lwm txoj kev xaiv. Nws muaj A1 (tsis- kev kawm kom nyab xeeb) kev kawm ruaj ntseg, uas yog qhov muaj txiaj ntsig tseem ceeb tshaj plaws {4} hwp tub yees. R466A ua ke R32 (49%), R125 (11.5%), thiab R1311 (39.5%). Nws cov yam ntxwv ua kom zoo phim R410a, ua rau nws hloov ncaj qha rau cov cuab yeej tshiab. Rau cov ntawv thov retrofit, cov tuam ntxhab siv R466A tuaj yeem xav tau nyiaj rau10 - 15% nce ntxiv rau r410a systems kom ua tiav kev ntsuas sib npaug. Nws GWP ntawm 733 sawv cev rau kev txhim kho ib puag ncig tseem ceeb tshaj R410a.

 Kev ntsuam tshuaj

Thawj kauj ruam ntawm cov txheej txheem retrofituction yog los ua kev txheeb xyuas cov kev ntsuas ntawm HVAC uas twb muaj tam sim no. Qhov no suav nrog kev soj ntsuam cov xwm txheej ntawm lub compressor, condenser, evaporator, thiab lwm yam. Lub hnub nyoog ntawm cov kab ke, nws qhov kev ua tau zoo tam sim no, thiab tej yam cim ntawm hnav thiab kua muag yuav tsum tau txiav txim siab. Yog tias lub kaw lus qub dhau los yog hauv lub xeev tsis zoo, nws yuav muaj txiaj ntsig ntau dua-} Siv tau cov txheej txheem tag nrho ntau dua li sim ua ib lub retrofit.

 Tub Yees Kos Duab

Thaum kev ntsuas cov system ua tiav, lub tub yees duab kuaj tau yooj yim yog qhov tseem ceeb. Txawv qis - Cov tub yees} Cov tub yees Piv txwv li, qee cov tub yees yuav cuam tshuam nrog cov roj lubricating rau hauv lub tshuab ua kom huv lossis ua rau xeb hauv lub tshuab tooj liab. Nyob rau hauv cov ntaub ntawv ntawm kev hloov mus rau R32, cov roj hauv cov kab ke yuav tsum tau hloov ua R410a siv cov roj es yuav tsum tau siv roj ester es, polyvinyl ether ether).

 Kev Hloov Chaw

Feem ntau, qee yam ntawm HVAC qhov system yuav xav tau hloov kho kom haum kom haum rau qhov qis {{mwp tub yees. Qhov no tuaj yeem suav nrog cov tshuab compressor, uas yuav xav tau hloov nrog ib qho uas tau tsim tshwj xeeb rau cov tub yees tshiab. Lub condenser thiab evaporator kuj tseem xav tau kev hloov kho los kho cov cua sov. Ib qho ntxiv, cov kab tub yees txias yuav tsum tau yaug lossis hloov los xyuas kom tsis muaj cov paug lossis cov chaw seem los ntawm cov tub yees dhau los.

 Kev ceev faj kev nyab xeeb

Thaum ua haujlwm nrog qis - cov tub yees Cov kws tshaj lij yuav tsum tau kawm ua ke siv cov tub yees no thiab ua raws li cov lus qhia kev nyab xeeb. Qhov no suav nrog siv cov cuab yeej muaj kev tiv thaiv tus kheej, xws li hnab looj tes thiab kev nyab xeeb tsom iav, thiab ua kom muaj kev nyab xeeb kom txaus hauv thaj chaw ua haujlwm. Kev xau {- Nrhiav tau cov khoom siv tsis tu ncua, thiab thaum tua hluav taws, uas yog hluav taws kub {extinguishing yuav tsum tau npaj muaj.

Kev teeb tsa thiab commissioning

Tom qab tag nrho cov kev hloov kho tshiab thiab cov tshev ua tiav tiav, qhov tshiab qis - gwp tub yees tuaj yeem ntsia tau. Cov txheej txheem them yuav tsum tau ua kom haum, ua raws li cov khoom siv cov lus pom zoo. Overcharging lossis forcharging tuaj yeem cuam tshuam ntau yam cuam tshuam rau kev ua haujlwm ntawm lub system. Thaum cov tub yees txias tau ntsia, lub kaw lus yuav tsum tau ua kom tau txoj hauj lwm kom ntseeg tau tias nws ua haujlwm kom raug. Qhov no suav nrog kev txheeb xyuas qhov ntsuas, ntsuas kub, thiab airflow kom paub tseeb tias lub kaw lus ua haujlwm tau zoo.

Kev hloov ntawm R410a kom tsawg - Kev xaiv GWP hauv HVAC cov tshuab yog cov kauj ruam tseem ceeb ntawm lub neej tom ntej. Thaum cov txheej txheem ntawm retrofitting yuav zoo li muaj kev nyuaj thiab kev nyuaj, nrog kev ntsuas kom tsim nyog, kev ntsuas, nws tuaj yeem ua tiav tiav. Los ntawm kev xaiv txoj cai tsawg {4 4} Raws li kev lag luam txuas ntxiv hloov zuj zus, nws yuav tsum tau hloov zuj zus thiab ntau dua cov hvac yuav tau rov qab siv cov kev hloov pauv thoob ntiaj teb.

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