Tatsala pang'ono kupeza zolowa m'malo mwa mafiriji a m'badwo wachiwiri ndi wachitatu!
Pa Seputembara 15, 2021, "Kukonzanso kwa Kigali ku Montreal Protocol pa Zinthu Zomwe Zimachepetsa Ozone Layer" kudayamba kugwira ntchito ku China. Malinga ndi "Montreal Protocol", firiji ya m'badwo wachiwiri HCFC isiya kugwiritsidwa ntchito mu 2030. Kusinthaku kumafuna kuti pofika 2050, kugwiritsa ntchito ma HFC padziko lonse lapansi kutsika pafupifupi 85%.
Ichi ndi chochitika chosaiwalika mumchitidwe wochotsa mafiriji, ndipo ikuperekanso chizindikiro chachikulu cha ndale kuti mayiko apadziko lonse atsimikiza kuthetsa kugwiritsa ntchito ma HFC.
Nthawi yomweyo, ndi kukhazikitsidwa kwa chandamale chapakhomo cha "dual-carbon" ndikukhazikitsa pang'onopang'ono mfundo zowongolera mafiriji a HFC a m'badwo wachitatu, ndikofunikira kuphunzira HCFC, zinthu zolowa m'malo mwa HFC ndi matekinoloje ofananira.
Firiji imalowa m'nthawi yamtengo wapatali wa GWP, ndipo vuto loyaka moto silinganyalanyazidwe!
Nthawi zambiri, kugwiritsa ntchito mafiriji oyaka moto okhala ndi milingo yotsika ya GWP m'malo mwa HCFC ndi mpweya wina wokhala ndi fluorine kumawonedwa ngati njira yabwino komanso yotsika mtengo. Komabe, kafukufuku wasonyeza kuti firiji zachikhalidwe sizimakwaniritsa zofunikira zonse za firiji zam'tsogolo za GWP yochepa, chitetezo, ntchito ya thermodynamic ndi ntchito ya chilengedwe nthawi yomweyo.
Mwanjira ina, zambiri zotsika za GWP zimatha kuyaka!
Muyezo wa dziko "Refrigerant Numbering Method and Safety Classification" GB/T 7778-2017 umagawa kawopsedwe ka mafiriji mu Gulu A (kawopsedwe kochepa kwambiri) ndi Gulu B (kawopsedwe wamkulu), ndipo kuyaka kumagawidwa mu Gulu 1 (Palibe kufalikira kwamoto), Gulu la 2L (losavuta komanso losatheka) zophulika). Malinga ndi GB/T 7778-2017, chitetezo cha refrigerants chimagawidwa m'magulu 8, omwe ndi: A1, A2L, A2, A3, B1, B2L, B2, ndi B3. Pakati pawo, A1 ndi yotetezeka kwambiri ndipo B3 ndiyowopsa kwambiri.
Momwe mungagwiritsire ntchito refrigerant ya A2L HFO mosamala komanso moyenera?
Ngakhale ma air conditioners apanyumba, ma air conditioners apakati ndi zipangizo zina za firiji zayesedwa kuti zigwire ntchito pafakitale, mtengo wamtengo wapatali wa firiji umasonyezedwa. Komabe, mayunitsi ambiri akuluakulu apakati oziziritsira mpweya ndi zoziziritsa kukhosi m'mafakitale ziyenera kudzazidwa ndi refrigerant pamalopo, monga momwe zimakhalira ndi zoziziritsira m'nyumba, zida zamafiriji, zosungirako zoziziritsa kukhosi, ndi zina zambiri panthawi yokonza.
Komanso, chifukwa cha mitundu yosiyanasiyana ya ma evaporator omwe amagwiritsidwa ntchito pazida zina, mtengo wa refrigerant ndi wosiyana. Kuphatikiza pa malo okonzerako ndi kukhazikitsa, chifukwa cha kuchepa kwa zinthu, ambiri ogwira ntchito yokonza amalipira firiji potengera zomwe akumana nazo. Kuonjezera apo, makampaniwa amakhudzidwa kwambiri ndi nkhani ya refrigerant flammability.
Kutengera izi, Chemours yakhazikitsa R1234yf, R454A, R454B, R454C ndi zina zofooka zoyaka moto A2L, mafiriji otsika a GWP, ndipo adzipereka kulimbikitsa mapangidwe adongosolo ndi maphunziro asayansi otchuka kuti athetse ngozi zakuyaka.
Mulingo wachitetezo wa A2L uli ndi mawonekedwe a kawopsedwe otsika (A) komanso kutsika kofooka (2L). Mafiriji ambiri a A2L HFO ali ndi magwiridwe antchito apamwamba komanso otsika a GWP, ndipo ndi malo abwino olowa m'malo am'badwo wam'mbuyo wa mafiriji a HFC. Zogulitsa za A2L sizimagwiritsidwa ntchito kwambiri pamsika wapadziko lonse lapansi, koma makampani ambiri apakhomo nawonso afulumizitsa liwiro la kukweza ndi kuyambitsa mtundu watsopano wa firiji muzopangira zopangira. Mwachitsanzo, Johnson Controls amagwiritsa ntchito Oteon™ XL41 (R-454B) mu York ® YLAA scroll chiller kumsika waku Europe; Wonyamula katundu amasankhanso R-454B (ndiko Monga refrigerant yake yayikulu ya GWP, Wonyamula adzagwiritsa ntchito R-454B m'nyumba zake zokhalamo komanso zopepuka zamalonda za HVAC zogulitsidwa ku North America kuchokera ku 2023. Bwezerani R-410A.
Nthawi yotumiza: Oct-23-2021