Umjikelo wokufriji we-compressor onezigaba ezibini ngokubanzi usebenzisa ii-compressor ezimbini, ezizezi i-compressor enoxinzelelo oluphantsi kunye ne-compressor enoxinzelelo oluphezulu.
1.1 Inkqubo yokunyuka kwegesi efrijini ukusuka kuxinzelelo lokuphuma komphunga ukuya kuxinzelelo lokufutha yahlulwe yangamanqanaba amabini
Inqanaba lokuqala: Icinezelwe kwixinzelelo eliphakathi yi-compressor yesigaba soxinzelelo oluphantsi kuqala:
Inqanaba lesibini: igesi ephantsi koxinzelelo oluphakathi icinezelwa ngakumbi kuxinzelelo lokufuma yi-compressor yoxinzelelo oluphezulu emva kokupholisa okuphakathi, kwaye umjikelo wokubuyisela umbane ugqibezela inkqubo yokufriji.
Xa kuveliswa amaqondo obushushu aphantsi, i-intercooler yomjikelo wokuqandisa we-compression enamanqanaba amabini inciphisa amaqondo obushushu okungena kwi-refrigerant kwi-compressor yesigaba soxinzelelo oluphezulu, kwaye ikwanciphisa amaqondo obushushu okukhupha kwi-compressor efanayo.
Ekubeni umjikelo wokuphola we-compression onezigaba ezibini wahlula yonke inkqubo yokuphola ibe ngamanqanaba amabini, umlinganiselo wokuphola wesigaba ngasinye uya kuba sezantsi kakhulu kunowokuphola kwesigaba esinye, nto leyo eya kunciphisa iimfuno zamandla ezixhobo kwaye iphucule kakhulu ukusebenza kakuhle komjikelo wokuphola. Umjikelo wokuphola we-compression onezigaba ezibini wahlulwe waba ngumjikelo wokuphola opheleleyo ophakathi kunye nomjikelo wokuphola ongaphelelanga ophakathi ngokweendlela ezahlukeneyo zokuphola eziphakathi; ukuba isekelwe kwindlela yokuphola, inokwahlulwa ibe ngumjikelo wokuphola wesigaba sokuqala kunye nomjikelo wokuphola wesigaba sesibini.
1.2 Iintlobo zefriji zoxinzelelo olunezigaba ezibini
Uninzi lweenkqubo zokufudumeza ezixineneyo ezinezigaba ezibini zikhetha iifriji ezishushu eziphakathi nezisezantsi. Uphando lovavanyo lubonisa ukuba i-R448A kunye ne-R455a ziindawo ezilungileyo zokutshintsha i-R404A ngokubhekiselele ekusebenzeni kakuhle kwamandla. Xa kuthelekiswa nezinye iindlela ezingasetyenziswayo endaweni yee-hydrofluorocarbons, i-CO2, njengolwelo olusebenzayo olunobuhlobo nokusingqongileyo, inokuba yindawo yokutshintsha iifriji ze-hydrofluorocarbon kwaye ineempawu ezilungileyo zokusingqongileyo.
Kodwa ukutshintsha i-R134a nge-CO2 kuya kuyiphazamisa indlela esebenza ngayo inkqubo, ingakumbi kumaqondo obushushu aphezulu, uxinzelelo lwenkqubo ye-CO2 luphezulu kakhulu kwaye lufuna unyango olukhethekileyo lwezinto ezibalulekileyo, ingakumbi i-compressor.
1.3 Uphando lokwenza ngcono ukugcinwa kwefriji yoxinzelelo olunezigaba ezibini
Okwangoku, iziphumo zophando lokwenza ngcono inkqubo yomjikelo wokuqandisa ucinezelo olunezigaba ezibini zezi zilandelayo:
(1) Ngelixa kwandiswa inani lemigca yeetyhubhu kwi-intercooler, ukunciphisa inani lemigca yeetyhubhu kwi-air cooler kunokunyusa indawo yokutshintshiselana kobushushu kwi-intercooler ngelixa kunciphisa ukuhamba komoya okubangelwa linani elikhulu lemigca yeetyhubhu kwi-air cooler. Ukubuyela kwindawo yayo yokungena, ngokuphuculwa okungentla, ubushushu bokungena be-intercooler bunokwehliswa malunga ne-2°C, kwaye kwangaxeshanye, isiphumo sokupholisa se-air cooler sinokuqinisekiswa.
(2) Gcina imvamisa yecompressor enoxinzelelo oluphantsi ihleli, kwaye utshintshe imvamisa yecompressor enoxinzelelo oluphezulu, ngaloo ndlela utshintshe umlinganiselo womthamo wokuhanjiswa kwegesi yecompressor enoxinzelelo oluphezulu. Xa ubushushu bokufuma buhlala buhleli kwi -20°C, i-COP ephezulu yi-3.374, kwaye umlinganiselo ophezulu wokuhanjiswa kwegesi ohambelana ne-COP yi-1.819.
(3) Ngokuthelekisa iinkqubo ezininzi eziqhelekileyo zokufudumeza ezixineneyo ze-CO2 transcritical ezimbini, kugqitywa kwelokuba ubushushu bokuphuma kwe-gas cooler kunye nokusebenza kakuhle kwe-low-pressure stage compressor kunempembelelo enkulu kumjikelo kuxinzelelo oluthile, ngoko ke ukuba ufuna ukuphucula ukusebenza kakuhle kwenkqubo, kuyimfuneko ukunciphisa ubushushu bokuphuma kwe-gas cooler kwaye ukhethe i-low-pressure stage compressor esebenza kakuhle.
Ixesha lokuthumela: Matshi-22-2023