Nws yog tam sim no los nrhiav kev hloov pauv rau cov tub yees thib ob thiab thib peb!
Thaum lub Cuaj Hlis 15, 2021, "Kigali Hloov Kho rau Montreal Protocol ntawm Cov Khoom Uas Ua Rau Ozone Layer" tau pib siv rau Suav teb.Raws li "Montreal raws tu qauv", lub thib ob-tiam refrigerant HCFC yuav tsum tsis txhob siv nyob rau hauv 2030. Qhov kev hloov kho yuav tsum tau hais tias los ntawm 2050, lub ntiaj teb no HFCs noj yuav poob li ntawm 85%.
Qhov no yog ib qho tseem ceeb tshwm sim nyob rau hauv lub refrigerant theem-tawm txheej txheem, thiab nws kuj xa tawm ib tug loj loj nom tswv teeb liab uas lub ntiaj teb no tau txiav txim siab mus rau theem ntawm kev siv ntawm HFCs.
Nyob rau tib lub sijhawm, nrog rau kev tsim tsa lub hom phiaj "dual-carbon" hauv tsev thiab maj mam ua raws li cov txheej txheem thib peb ntawm cov tub yees HFCs tswj txoj cai, nws tseem ceeb heev kom kawm txog HCFC, HFCs hloov cov tshuaj thiab lwm yam technologies.
Cov tub yees nkag mus rau lub sijhawm ntawm GWP tus nqi qis, thiab qhov teeb meem flammability tsis tuaj yeem tsis quav ntsej!
Feem ntau hais lus, kev siv cov tub yees hluav taws kub uas muaj GWP qis los hloov HCFC thiab lwm cov roj fluorine uas muaj cov roj fluorine yog suav tias yog kev daws teeb meem zoo thiab txo nqi.Txawm li cas los xij, cov kev tshawb fawb tau pom tias cov tub yees ib txwm tsis tshua muaj raws li tag nrho cov kev xav tau ntawm cov tub yees yav tom ntej rau GWP qis, kev nyab xeeb, kev ua haujlwm kub thiab kev ua haujlwm ib puag ncig tib lub sijhawm.
Hauv lwm lo lus, ntau qhov qis GWP qhov tseem ceeb yog combustible!
Lub teb chaws tus qauv "Txoj Kev Ntsuas Tus Qauv thiab Kev Nyab Xeeb Kev Nyab Xeeb" GB / T 7778-2017 faib cov toxicity ntawm cov tub yees rau hauv Class A (tsis tshua muaj mob toxicity) thiab Class B (siab mob toxicity), thiab flammability yog cais rau hauv Chav Kawm 1 (Tsis muaj nplaim taws tawm. ), Chav Kawm 2L (tsis muaj zog ua tau), Chav Kawm 2 (ua tau), thiab Chav Kawm 3 (flammable thiab explosive).Raws li GB / T 7778-2017, kev nyab xeeb ntawm cov tub yees tau muab faib ua 8 pawg, xws li: A1, A2L, A2, A3, B1, B2L, B2, thiab B3.Ntawm lawv, A1 yog qhov nyab xeeb tshaj plaws thiab B3 yog qhov txaus ntshai tshaj plaws.
Yuav siv A2L HFO tub yees li cas kom nyab xeeb thiab ua tau zoo?
Txawm hais tias lub tshuab cua txias hauv tsev, lub tshuab cua txias hauv nruab nrab thiab lwm yam khoom siv tub yees tau raug sim rau kev ua haujlwm ntawm lub Hoobkas, qhov kev siv tus nqi ntawm cov tub yees yog qhia.Txawm li cas los xij, ntau lub tshuab cua txias hauv nruab nrab thiab cov tshuab chillers yuav tsum tau ntim nrog cov tub yees rau ntawm qhov chaw, xws li cov tshuab cua txias hauv tsev, cov khoom siv tub yees, qhov txias txias, thiab lwm yam thaum lub sijhawm tu.
Ntxiv mus, vim muaj ntau hom evaporators siv nyob rau hauv qee cov khoom siv, cov khoom siv tub yees sib txawv.Ntxiv rau qhov chaw txij nkawm thiab kev teeb tsa, vim muaj qee qhov kev txwv, ntau tus neeg ua haujlwm tu tub yees tau them raws li kev paub dhau los.Tsis tas li ntawd, kev lag luam kuj tseem ceeb heev rau qhov teeb meem ntawm refrigerant flammability.
Raws li qhov no, Chemours tau tshaj tawm R1234yf, R454A, R454B, R454C thiab lwm yam tsis muaj hluav taws xob tsis muaj zog A2L, qis GWP tub yees, thiab tau cog lus los txhawb kev tsim qauv thiab kev kawm txuj ci nrov los daws cov teeb meem flammability.
Qib kev nyab xeeb A2L muaj cov yam ntxwv ntawm cov tshuaj lom neeg tsawg (A) thiab tsis muaj zog flammability (2L).Ntau A2L HFO tub yees muaj ob qho kev ua haujlwm siab thiab tsis tshua muaj GWP tus yam ntxwv, thiab yog qhov zoo tshaj plaws hloov pauv rau tiam dhau los ntawm HFC tub yees.A2L cov khoom lag luam tsis yog tsuas yog siv dav hauv kev lag luam thoob ntiaj teb, tab sis ntau lub tuam txhab hauv tsev kuj tau nrawm nrawm ntawm kev hloov kho dua tshiab thiab nthuav tawm hom tshiab ntawm cov tub yees rau hauv kev siv ntau lawm.Piv txwv li, Johnson Controls siv Oteon ™ XL41 (R-454B) hauv nws York ® YLAA scroll chiller rau European lag luam;Carrier kuj xaiv R-454B (uas yog Raws li nws lub ntsiab low-GWP refrigerant, Carrier yuav siv R-454B nyob rau hauv nws tubular tsev thiab lub teeb coj mus muag HVAC khoom muag nyob rau hauv North America los ntawm 2023. Hloov R-410A.
Post lub sij hawm: Oct-23-2021