Ka'idar refrigeration na firiji yana dogara ne akan sake zagayowar Carnot, wanda refrigerant shine matsakaicin matsakaici, kuma ana jigilar zafi a cikin firiji zuwa waje ta hanyar canjin lokaci na vaporization endothermic - condensation exothermic.
Mahimman sigogi:
①Wurin tafasa:Yana ƙayyade yawan zafin jiki na evaporation (ƙananan wurin tafasa, ƙananan zafin jiki na firiji).
②Matsin lamba:Mafi girman matsin lamba, mafi girman nauyin kwampreso (yana shafar amfani da makamashi da hayaniya).
③Thermal conductivity:Mafi girman ma'auni na thermal, da sauri saurin sanyaya.
Dole ne ku san manyan nau'ikan 4 na ingancin sanyaya sanyi:
1.R600a (isobutane, hydrocarbon refrigerant)
(1)Kariyar muhalli: GWP (Mai yuwuwar Dumamawar Duniya) ≈ 0, ODP (Mai yuwuwar Rushewar Ozone) = 0, daidai da ƙa'idodin Tarayyar Turai F - Gas.
(2)Ingantacciyar firji: tafasar batu - 11.7 ° C, dace da gida firiji dakin daskarewa (-18 °C) bukatun, naúrar girma refrigeration iya aiki ne game da 30% mafi girma fiye da R134a, kwampreso matsawa ne kananan, da kuma makamashi amfani ne low.
(3)Bayanin shari'a: Firinji 190L yana amfani da R600a, tare da amfani da wutar lantarki na yau da kullun na digiri 0.39 (matakin ƙarfin kuzari 1).
2.R134a (tetrafluoroethane)
(1)Kariyar muhalli: GWP = 1300, ODP = 0, Tarayyar Turai za ta hana amfani da sabbin kayan aiki daga 2020.
(2)Ingantacciyar firji: tafasar batu - 26.5 °C, low zafin jiki yi shi ne mafi alhẽri daga R600a, amma naúrar sanyaya iya aiki ne low, na bukatar babban matsawa matsawa.
(3) Matsin na'ura yana da 50% sama da na R600a, kuma ana ƙara yawan amfani da makamashi na compressor.
3.R32 (difluoromethane)
(1)Kariyar muhalli: GWP = 675, wanda shine 1/2 na R134a, amma yana da ƙonewa (don hana haɗarin haɗari).
(2)Ingantacciyar firji: tafasar batu - 51.7 ° C, dace da inverter iska kwandishan, amma matsa lamba a cikin firiji ya yi yawa (sau biyu sama da R600a), wanda zai iya sauƙi kai ga kwampreso obalodi.
4.R290 (propane, hydrocarbon refrigerant)
(1)Abotakan muhalli: GWP ≈ 0, ODP = 0, shine zabi na farko na "firiji mai sanyi" a cikin Tarayyar Turai.
(2)Ingantacciyar firji: tafasar batu - 42 ° C, ikon sanyaya naúrar 40% sama da R600a, dace da manyan injin daskarewa.
Hankali:Fiji na gida yana buƙatar rufewa sosai saboda iyawar wuta (madaidaicin wuta 470 °C) (farashin yana ƙaruwa da 15%).
Ta yaya firiji ke shafar hayaniyar firiji?
Hayaniyar firiji ta fito ne daga girgizar compressor da hayaniyar kwararar firiji. Halayen firji suna shafar hayaniya ta hanyoyi masu zuwa:
(1) High - matsa lamba aiki (matsa lamba 2.5MPa), da kwampreso bukatar high - mita aiki, da amo iya isa 42dB ( talakawan firiji game da 38dB), low - matsa lamba aiki (condensing matsa lamba 0.8MPa), da kwampreso load ne low, da amo ne a matsayin low as 36dB.
(2) R134a yana da danko mai girma (0.25mPa · s), kuma yana da wuyar yin hayaniya (mai kama da sautin “sautinsa”) lokacin da yake gudana ta cikin bututun capillary. R600a yana da ƙananan danko (0.11mPa · s), ƙwanƙwasa ƙwanƙwasa, da rage hayaniya da kusan 2dB.
Lura: Firinji na R290 yana buƙatar ƙara fashewa - ƙirar hujja (kamar kumfa mai kauri), amma yana iya sa akwatin ya sake sauti kuma ƙara ta tashi ta 1 - 2dB.
Yadda za a zabi nau'in firiji?
R600a yana da ƙananan amo don amfani da gida, farashin yana da 5% na jimlar farashin firiji, R290 yana da babban kariyar muhalli, ya dace da ka'idodin Tarayyar Turai, farashin 20% ya fi tsada fiye da R600a, R134a ya dace, dace da tsofaffin firiji, R32 bai balaga ba, zaɓi a hankali!
Refrigerant shine "jini" na firiji, kuma nau'in sa yana shafar amfani da makamashi kai tsaye, amo, aminci da rayuwar sabis. Ga masu amfani na yau da kullun, R600a shine mafi kyawun zaɓi don ingantaccen aiki na yanzu, kuma ana iya la'akari da R290 don bin matsanancin kariyar muhalli. Lokacin siye, zaku iya tabbatar da nau'in refrigerant ta alamar tambarin suna a bayan firij (kamar "Refrigerant: R600a") don guje wa yaudarar ra'ayoyin tallace-tallace kamar "juyawa mitoci" da "sanyi - kyauta".
Lokacin aikawa: Maris-26-2025 Ra'ayoyi: