Ukusatshalaliswa kokushisa kwangaphakathi kwe-plate fin heat exchanger ohlelweni loketshezi

Ukusatshalaliswa kwezinga lokushisa langaphakathi le-plate fin heat exchanger ohlelweni loketshezi:
1） Umjikelezo wokwanda kwe-nitrogen: umehluko wokushisa kokushintshana kokushisa emaphethelweni amabili nasezingxenyeni eziphakathi zesishintshi sokushisa mncane kakhulu, kanti umehluko wokushisa kokushintshana kokushisa kwezinye izingxenye mkhulu kakhulu. Kodwa-ke, kunezidingo ezithile zomehluko wokushisa omncane wokushintshana kokushisa ekwakhiweni kwesishintshi sokushisa, okungenakuba mncane kakhulu. Ngokuvamile, ukusatshalaliswa komehluko wokushisa kokushintshana kokushisa akungalingani, umehluko wokushisa mkhulu, futhi ukulahlekelwa okungenakuguqulwa kukhulu, ngakho-ke isidingo samandla eshafti se-compressor ehambisanayo sizoba sikhulu;
2） Umjikelezo wokwanda kwe-methane ye-nitrogen: amandla okupholisa engxenyeni yokushisa ephansi ye-heat exchanger anikezwa yi-throttle valve. I-mixer ye-nitrogen ne-methane iyaphola futhi ipholile. Ngenxa yokuqukethwe okuphezulu kwe-methane, umehluko wokushisa ekugcineni kokubanda ngemva kokuphola mncane. Ngemva kokwenyuka kwezinga lokushisa, i-methane ne-nitrogen ziyahwamuka ngokushesha, zinikeza inani elikhulu lomthamo wokupholisa, okuholela ekwehlukeni okukhulu kwezinga lokushisa ku-heat exchanger futhi igesi exubile ephefumulayo iyaqhubeka nokwenyuka. Ukushisa okunengqondo kusetshenziselwa ukunikeza umthamo wokupholisa wegesi yemvelo ewuketshezi olunomfutho ophezulu, futhi umehluko wokushisa uqala ukusebenza. Ngemva kokwehliswa kube yinani elithile, uketshezi olubandayo luxutshwa negesi yokushisa ephansi endaweni yokukhipha i-expander ukuze kuqhubeke ukunikeza umthamo wokupholisa ohlelweni. Umehluko omncane wokushisa ngaphakathi kwebhokisi elibandayo usekugcineni okushisayo kakhulu, ekugcineni okubandayo kakhulu kanye nokuhlangana koketshezi oluphothiwe kanye noketshezi lokukhulisa, Ngaphezu kwalokho, umehluko wokushisa ojwayelekile we-heat exchanger nawo ungaphansi komjikelezo woketshezi lokukhulisa i-nitrogen;
3） MRC: umehluko wokushisa kokushintshana kokushisa ekugcineni kokushisa okuphansi ngaphakathi kwe-heat exchanger mncane, kanti umehluko wokushisa mkhulu uma useduze nokushisa okuvamile. Lokhu kungenxa yokuthi i-isopentane isetshenziselwa ukufaka esikhundleni se-butane efrijini. Ngemva kokuba i-compressed mixed refrigerant isipholile ngamanzi olwandle, i-isopentane efrijini iqiniswa ibe uketshezi. Efrijini elixubile elicindezelwe, i-isopentane iqala ukuhwamuka ekushiseni okuphezulu, ngokushisa okukhulu okucashile kokuhwamuka. Le ngxenye yamandla okupholisa ayikwazi ukusetshenziswa lapho igesi yemvelo kanye ne-high-pressure mixed refrigerant ekugelezeni kokushisa kupholile, Ngakho-ke, umehluko wokushisa kokushintshana kokushisa kulesi sigaba mkhulu. Kodwa-ke, ukusebenzisa i-isopentane esikhundleni se-butane njenge-high boiling point refrigerant akugcini nje ngokunciphisa ukusetshenziswa kwamandla, kodwa futhi kwandisa umehluko wokushisa kokushintshana kokushisa, okuzuzisa kakhulu uhlelo lonke;
Ngokwanda kwenani lezigaba zomjikelezo wokuqandisa, ukusetshenziswa kwamandla kohlelo lokuqandisa kuyancipha, kanti i-coefficient yokuqandisa kanye nokusebenza kahle kokuzikhandla kuyanda, kodwa ithonya lokwanda kwenani lezigaba ekusebenzeni kokuqandisa liyancipha. Ukwanda kwezigaba zomjikelezo wokuqandisa kuzokwandisa ubunzima benqubo futhi kunciphise ukusebenza. Izigaba ezifanele zezinhlelo zokuqandisa ezinezilinganiso ezahlukene zihlukile. Uma isikali sikhulu, kulapho izigaba ezifanele ziba ziningi;

I-MRC ifaka phakathi umjikelezo opholisa ngaphambi kwesikhathi kanye nomjikelezo ngaphandle kokupholisa ngaphambi kwesikhathi. Umjikelezo wangaphambi kokupholisa uphinde ufaka phakathi ukupholisa okumsulwa kwe-refrigerant kanye nokupholisa okuhlanganisiwe kwe-refrigerant. Ama-refrigerant ahlanganisiwe kule mijikelezo ahlukaniswe ngezigaba ezahlukene. Uketshezi oluhlukaniswe esigabeni ngasinye luyapholiswa futhi lufakwe i-throttle ukuze luqandiswe, kanti igesi ehlukanisiwe iyaqhubeka nokuphola futhi ihlukaniswe. Izigaba zokuhlukanisa zihlukile, ubunzima benqubo buhlukile, futhi ukusebenza kahle komjikelezo wokuqandisa kuhlukile;
37, Ekuklanyweni kwenqubo ye-MRC, kuyadingeka ukwenza ngcono isakhiwo senqubo bese ukhetha inombolo yomjikelezo efanele. I-MRC ifaka i-MRC yesigaba esisodwa, i-MRC yesigaba ezimbili, i-MRC yesigaba ezintathu kanye ne-MRC yesigaba esiningi. Le mijikelezo yokuqandisa isetshenziswa njengamanje. Izigaba ezahlukene zomjikelezo wokuqandisa, ukusetshenziswa kwamandla okuqandisa okuhlukile kanye nobunzima obuhlukene benqubo kudingeka kukhethwe ngokwesilinganiso sokucubungula esihlukile. Ukwenza ngcono i-MRC kufaka phakathi ukwenza ngcono isakhiwo kanye nokwenza ngcono ipharamitha yenqubo;