Yana daf da samun maye gurbin na biyu- da na uku na refrigerants!
A ranar 15 ga Satumba, 2021, "Kwanyar Kigali ga Yarjejeniyar Montreal kan Abubuwan da ke Rage Ozone Layer" ya fara aiki ga kasar Sin.A cewar "Montreal Protocol", na'urar refrigerant na HCFC na ƙarni na biyu za a daina amfani da shi a cikin 2030. Canjin yana buƙatar cewa nan da 2050, amfani da HFCs na duniya zai ragu da kusan 85%.
Wannan wani muhimmin al'amari ne mai cike da tarihi a cikin tsarin kawar da sanyi, kuma yana aika da wata babbar alama ta siyasa cewa kasashen duniya sun kuduri aniyar kawar da amfani da HFCs.
A lokaci guda, tare da ƙaddamar da manufar "dual-carbon" na gida da kuma aiwatar da tsarin kulawa na refrigerant na HFC na ƙarni na uku, yana da gaggawa don nazarin HCFC, HFCs masu maye gurbin abubuwa da fasaha masu dangantaka.
Refrigerant ya shiga zamanin ƙarancin ƙimar GWP, kuma matsalar flammability ba za a iya watsi da ita ba!
Gabaɗaya magana, amfani da firigeren masu ƙonewa tare da ƙarancin ƙimar GWP don maye gurbin HCFC da sauran iskar gas mai ɗauke da fluorine ana ɗaukar mafi inganci da ƙarancin farashi.Duk da haka, bincike ya nuna cewa na'urorin gargajiya ba kasafai suke cika duk buƙatun na'urorin refrigerants na gaba don ƙarancin GWP, aminci, aikin thermodynamic da aikin muhalli a lokaci guda.
A wasu kalmomi, yawancin ƙananan ƙimar GWP suna ƙonewa!
Ma'auni na ƙasa "Hanyar Lamba na Refrigerant da Rarraba Tsaro" GB/T 7778-2017 yana rarraba gubar na'urorin refrigerants zuwa Class A (ƙananan guba na yau da kullun) da Class B (babban guba na yau da kullun), kuma an rarraba flammability zuwa Class 1 (Babu yaduwar harshen wuta). ), Class 2L (mai rauni mai yiwuwa), Class 2 (mai yiwuwa), da Class 3 (mai ƙonewa da fashewa).Dangane da GB/T 7778-2017, amincin refrigerant ya kasu kashi 8, wato: A1, A2L, A2, A3, B1, B2L, B2, da B3.Daga cikin su, A1 shine mafi aminci kuma B3 shine mafi haɗari.
Yadda ake amfani da firiji A2L HFO lafiya da inganci?
Ko da yake an gwada na'urorin sanyaya iska na gida, na'urorin sanyaya na tsakiya da sauran na'urorin firiji don yin aiki a masana'anta, ana nuna ƙimar cajin na'urar.Duk da haka, yawancin manyan na'urori masu kwantar da iska na tsakiya da masana'antu chillers suna buƙatar cikawa da na'urar sanyaya a kan wurin, kamar yadda na'urorin gida, kayan firiji, ajiyar sanyi, da dai sauransu yayin aikin kulawa.
Bugu da ƙari, saboda nau'ikan evaporators daban-daban da ake amfani da su a wasu kayan aiki, cajin firiji ya bambanta.Baya ga wurin kulawa da shigarwa, saboda ƙayyadaddun yanayi, yawancin ma'aikatan kulawa suna cajin firiji dangane da gogewa.Bugu da kari, masana'antar kuma tana da matukar kula da batun flammability na refrigerant.
Dangane da wannan, Chemours ya ƙaddamar da R1234yf, R454A, R454B, R454C da sauran A2L mai rauni mai rauni, ƙananan GWP refrigerants, kuma ya himmatu wajen haɓaka ƙirar tsarin da mashahurin horarwar kimiyya don magance haɗarin ƙonewa.
Matsayin aminci na A2L yana da halaye na ƙarancin guba (A) da rauni mai rauni (2L).Yawancin firji na A2L HFO suna da babban aiki da ƙarancin halaye na GWP, kuma sune madaidaitan madogara ga ƙarnin da suka gabata na refrigerants na HFC.Ba wai kawai ana amfani da samfuran A2L a kasuwannin duniya ba, amma yawancin kamfanonin cikin gida sun kuma haɓaka saurin haɓakawa da gabatar da wannan sabon nau'in refrigerant cikin aikace-aikacen samarwa.Misali, Johnson Controls yana amfani da Oteon™ XL41 (R-454B) a cikin York ® YLAA gungurawar chiller don kasuwar Turai;Har ila yau, mai ɗaukar kaya ya zaɓi R-454B (wato A matsayin babban firijin GWP ɗin sa, Mai ɗaukar kaya zai yi amfani da R-454B a cikin tubular mazauninsa da samfuran HVAC na kasuwanci mai haske wanda aka sayar a Arewacin Amurka daga 2023. Sauya R-410A.
Lokacin aikawa: Oktoba-23-2021