Umjikelezo we-compressor refrigeration wezigaba ezimbili ngokuvamile usebenzisa ama-compressor amabili, okuyi-compressor enengcindezi ephansi kanye ne-high-pressure compressor.
1.1 Inqubo yegesi yesiqandisi ekhuphukayo isuka kungcindezi ehwamukayo iye ekujikeni ihlukaniswe izigaba ezi-2
Isigaba sokuqala: Icindezelwe ingcindezi emaphakathi yi-compressor yesiteji esiphansi kuqala:
Isigaba sesibili: igesi ngaphansi kwengcindezi ephakathi iphinde icindezeleke ekucindezelweni kwe-condensation yi-compressor ephezulu yokucindezela ngemva kokupholisa okuphakathi, futhi umjikelezo ophindaphindiwe uqedela inqubo yesiqandisi.
Lapho ukhiqiza amazinga okushisa aphansi, i-intercooler yomjikelezo wokucindezelwa kwezinyathelo ezimbili zokucindezela inciphisa izinga lokushisa lokungena kwe-refrigerant ku-compressor yesiteji sokucindezela okuphezulu, futhi iphinde inciphise izinga lokushisa lokukhishwa kwe-compressor efanayo.
Njengoba umjikelezo wesiqandisi wokucindezela wezigaba ezimbili uhlukanisa yonke inqubo yesiqandisi ibe yizigaba ezimbili, isilinganiso sokucindezela sesiteji ngasinye sizoba ngaphansi kakhulu kunokucindezela kwesiteji esisodwa, ukunciphisa izidingo zamandla wemishini futhi kuthuthukise kakhulu ukusebenza kahle komjikelezo wesiqandisi. Umjikelezo wezinyathelo ezimbili zokucindezelwa kwesiqandisi uhlukaniswe waba umjikelezo wokupholisa ophelele omaphakathi kanye nomjikelezo wokupholisa ongaphelele omaphakathi ngokwezindlela zokupholisa ezimaphakathi ezihlukene; uma isekelwe endleleni ye-throttling, ingahlukaniswa ibe umjikelezo wesiteji sokuqala kanye nomjikelezo wesigaba sesibili.
1.2 Izinhlobo zeziqandisi zokuminyanisa ezinezigaba ezimbili
Iningi lezinyathelo ezimbili zokucindezelwa kweziqandisini zikhetha amafriji okushisa aphakathi nendawo naphansi. Ucwaningo lokuhlola lubonisa ukuthi u-R448A kanye no-R455a yizinto ezinhle ezithatha indawo ka-R404A ngokonga kukagesi. Uma kuqhathaniswa nezinye izinto ezingasetshenziswa esikhundleni sama-hydrofluorocarbon, i-CO2, njengoketshezi olusebenzayo oluhambisana nemvelo, ingathatha indawo yeziqandisi ze-hydrofluorocarbon futhi inezici ezinhle zemvelo.
Kodwa ukufaka esikhundleni se-R134a nge-CO2 kuzolimaza ukusebenza kwesistimu, ikakhulukazi emazingeni okushisa aphezulu, ukucindezela kwesistimu ye-CO2 kuphezulu kakhulu futhi kudinga ukuphathwa okukhethekile kwezingxenye ezibalulekile, ikakhulukazi i-compressor.
1.3 Ucwaningo lokuthuthukisa esiqandisini sokuminyanisa esinezigaba ezimbili
Njengamanje, imiphumela yocwaningo lokuthuthukisa yesistimu yomjikelezo wokucindezelwa kwesiqandisi wezigaba ezimbili ikakhulukazi imi kanje:
(1) Ngenkathi ukwandisa inani lemigqa yamashubhu ku-intercooler, ukunciphisa inani lemigqa yamashubhu ku-cooler yomoya kungakhuphula indawo yokushintshanisa ukushisa kwe-intercooler ngenkathi kunciphisa ukugeleza komoya okubangelwa inqwaba yemigqa yeshubhu ku-cooler emoyeni. Ukubuyela endaweni yayo yokungena, ngokusebenzisa ukuthuthukiswa okungenhla, izinga lokushisa lokungena kwe-intercooler lingancishiswa cishe ngo-2 ° C, futhi ngesikhathi esifanayo, umphumela wokupholisa we-cooler emoyeni ungaqinisekiswa.
(2) Gcina imvamisa ye-compressor ye-low-pressure njalo, futhi ushintshe imvamisa ye-compressor ephezulu yokucindezela, ngaleyo ndlela uguqule isilinganiso somthamo wokulethwa kwegesi we-compressor ephezulu yokucindezela. Uma izinga lokushisa lokuhwamuka lingaguquki ku--20 ° C, i-COP ephezulu ingu-3.374, futhi esiphezulu Isilinganiso sokulethwa kwegesi esihambisana ne-COP ngu-1.819.
(3) Ngokuqhathanisa izinhlelo ezimbalwa ezivamile ze-CO2 ezibhalwe ngezigaba ezimbili zokucindezelwa kwesiqandisi, kufinyelelwa esiphethweni sokuthi izinga lokushisa lokuphuma kwe-cooler yegesi kanye nokusebenza kahle kwe-compressor yesiteji sokucindezela okuphansi kunethonya elikhulu emjikelezweni ngengcindezi ethile, ngakho-ke uma ufuna ukwenza ngcono ukusebenza kahle kohlelo, kuyadingeka ukunciphisa izinga lokushisa lokuphuma kwe-cooler yegesi bese ukhetha i-compressor esezingeni eliphansi yokusebenza kahle.
Isikhathi sokuthumela: Mar-22-2023