Ukuze wenze ifriji, qala uqonde ulwazi oluqhelekileyo lwefriji

I-refrigerant, eyaziwa ngokuba yi-refrigerant, yinto esebenzayo kwinkqubo yokufriji. Okwangoku, kukho iintlobo ezingaphezu kwama-80 zezinto ezinokusetyenziswa njenge-refrigerant. Ezona ziqhelekileyo ze-refrigerant yiFreon (kuquka: R22, R134a, R407c, R410a, R32, njl.njl.), i-ammonia (NH3), amanzi (H2O), i-carbon dioxide (CO2), inani elincinci lee-hydrocarbon (ezifana: R290, R600a).

Iimpawu zempembelelo yeefriji kwindalo esingqongileyo ziquka ikakhulu: amandla okuphelelwa yi-ozone (ODP) kunye nokukwazi ukufudumala kwehlabathi (GWP); ukongeza kwimpembelelo kwindalo esingqongileyo, iifriji kufuneka zibe nokhuseleko olwamkelekileyo lokukhusela ubomi babantu kunye nempahla yabo.

I-ODP Ozone Depletion Potential: Ibonisa amandla e-chlorofluorocarbons emoyeni okutshabalalisa umaleko we-ozone. Okukhona ixabiso lincinci, kokukhona iimpawu ze-refrigerant zingcono. Ii-refrigerant ezinexabiso le-ODP elingaphantsi okanye elilingana ne-0.05 zithathwa njengezivumelekileyo ngokusekelwe kumanqanaba angoku.

Amandla Okufudumala Kwehlabathi e-GWP: Isalathisi sempembelelo yemozulu ebangelwa kukukhutshwa kweegesi ezibangela ukufudumala komhlaba, esibonisa ukuba kwixesha elithile (iminyaka engama-20, iminyaka eli-100, iminyaka engama-500), impembelelo yokufudumala komhlaba yegesi ethile ebangela ukufudumala komhlaba ihambelana nomgangatho we-CO2 enesiphumo esifanayo, i-CO2. I-GWP=1.0. Ngokwesiqhelo bala i-GWP ngokusekelwe kwiminyaka eli-100, echazwe njenge-GWP100, "iMontreal Protocol" kunye ne-"Kyoto Protocol" zombini zisebenzisa i-GWP100.

1. Uhlu lweefriji

Ngokutsho kwe-GB/T 7778-2017, ukhuseleko lwe-refrigerant lwahlulwe lwaba ziindidi ezisi-8, ezizezi: A1, A2L, A2, A3, B1, B2L, B2, B3, phakathi kwazo i-A1 yeyona ikhuselekileyo kwaye i-B3 yeyona iyingozi kakhulu.

Amanqanaba okhuseleko eefriji eziqhelekileyo ngala alandelayo:

Uhlobo A1: R11, R12, R13, R113, R114, R115, R116, R22, R124, R23, R125, R134a,, R236fa, R218, RC318, R401a, R401b, R402a, R402b, R403a, R403b, R404a, R407a, R407b, R407c, R407d, R408a, R409a, R410a, R417a, R422d, R500, R501, R502, R507a, R508a, R508b, R509a, R513a, R744

Uhlobo A2: R142b, R152a, R406a, R411a, R411b, R412a, R413a, R415b, R418a, R419a, R512a

Udidi lwe-A2L: R143a, R32, R1234yf, R1234ze(E)

Iklasi A3: R290, R600, R600a, R601a, R1270, RE170, R510a, R511a

Udidi B1: R123, R245fa

Udidi lwe-B2L: R717

Ngokweqondo lobushushu bokufuma kwefriji phantsi koxinzelelo oluqhelekileyo lomoya (100kPa), inokwahlulwahlulwa ibe: ifriji enobushushu obuphezulu, ifriji enobushushu obuphakathi, kunye nefriji enobushushu obuphantsi.

Ifriji enobushushu obuphezulu obuphantsi: iqondo lobushushu bokufuma liphezulu kune-0°C, kwaye uxinzelelo lokufuma luphantsi kune-29.41995×104Pa. Ezi zifriji zifanelekile ukusetyenziswa kwiicompressor zefriji ze-centrifugal kwiinkqubo zomoya-moya.

Isiqandisi sobushushu obuphakathi esinoxinzelelo oluphakathi: isiqandisi sobushushu obuphakathi esinoxinzelelo oluphakathi: ubushushu bokufuma -50 ~ 0°C, uxinzelelo lokufutha (196.113 ~ 29.41995) × 104Pa. Olu hlobo lwesiqandisi lusetyenziswa ngokubanzi kwiinkqubo zokufudumeza zepiston eziqhelekileyo zoxinzelelo lwesigaba esinye kunye neenkqubo zokufudumeza zepiston zoxinzelelo lwesigaba esibini.

Isiqandisi esinoxinzelelo oluphezulu nobushushu obuphantsi: isiqandisi esinoxinzelelo oluphezulu nobushushu obuphantsi: ubushushu bokufuma bungaphantsi kune -50°C, kwaye uxinzelelo lokufuma luphezulu kune 196.133×104Pa. Olu hlobo lwesiqandisi lufanelekile kwinxalenye yobushushu obuphantsi yesixhobo sokuqandisa i-cascade okanye isixhobo sobushushu obuphantsi obungaphantsi kwe -70°C.