A. Uhlolojikelele
Ngenxa yesithwathwa ebusweni be-evaporator endaweni yokugcina ebandayo, ivimbela ukuqhutshwa nokusabalalisa umthamo obandayo we-evaporator yesiqandisi (ipayipi), futhi ekugcineni ithinte umphumela wesiqandisi.Lapho ubukhulu bengqimba yesithwathwa (iqhwa) ebusweni be-evaporator bufinyelela izinga elithile, ukusebenza kahle kwesiqandisi kuze kwehle kuze kube ngaphansi kuka-30%, okuholela ekumosheni okukhulu kwamandla kagesi futhi kufinyeze impilo yesevisi yesistimu yesiqandisi.Ngakho-ke, kuyadingeka ukwenza umsebenzi wokunciphisa isitoreji esibandayo emjikelezweni ofanele.
B. Inhloso yokuqeda iqhwa
1, ukuthuthukisa ukusebenza kahle kwesiqandisi sohlelo;
2. Qinisekisa ikhwalithi yemikhiqizo eqandisiwe endaweni yokugcina impahla;
3, yonga amandla;
4, nwebisa impilo yesevisi yohlelo lokugcina olubandayo.
C. izindlela zokuqeda iqhwa
Izindlela zokuqeda isithwathwa endaweni ebandayo: igesi eshisayo yokuncibilika (i-hot fluorine defrosting, i-hot ammonia defrosting), i-water defrosting, i-electrical defrosting, i-mechanical (yokwenziwa) iqhwa, njll.
1, igesi eshisayo defrost
Ifanele ipayipi elikhulu, eliphakathi nendawo nelincane lokugcina elibandayo:
I-condensate ye-gaseous condensate eshisa kakhulu ifakwa ngokuqondile ku-evaporator ngaphandle kokuphazanyiswa, futhi izinga lokushisa le-evaporator liyakhuphuka, okubangela ungqimba lwesithwathwa kanye nejoyinti lokukhipha okubandayo lincibilike noma likhumuke.I-hot gas defrosting iyonga futhi inokwethenjelwa, ilungele ukugcinwa nokuphathwa, futhi ubunzima bayo bokutshala izimali nokwakha abukhulu.
2, amanzi isifutho defrost
Isetshenziswa kabanzi ekuqedeni amaqhwa e-chiller enkulu naphakathi:
Ngezikhathi ezithile fafaza i-evaporator ngamanzi okushisa kwegumbi ukuze uncibilikise ungqimba lwesithwathwa.Nakuba umphumela wokuqeda iqhwa muhle kakhulu, ulungele kakhulu okokupholisa umoya, futhi kunzima ukusebenzisa amakhoyili ahwamukayo.Kungenzeka futhi ukufafaza i-evaporator ngesisombululo esinezinga lokushisa eliphezulu eliqandisayo, elifana no-5% kuya ku-8% we-concentrated brine, ukuvimbela ukwakheka kwesithwathwa.
3, i-defrost kagesi
Ipayipi lokushisa likagesi lisetshenziswa kakhulu kuma-chiller aphakathi nendawo namancane:
Intambo yokushisa kagesi isetshenziselwa ikakhulukazi ukuncibilika kwe-aluminium irowu lokufudumala kweshubhu kagesi endaweni yokugcina ebandayo ephakathi nendawo, elula futhi elula ukuyisebenzisa ku-chiller;Kodwa-ke, esimweni sokugcinwa okubandayo kwe-aluminium tube, ubunzima bokwakhiwa kwe-aluminium fin ukufakwa kocingo lokufudumeza kagesi abuncane, futhi izinga lokuhluleka liphezulu kakhulu esikhathini esizayo, ukugcinwa nokuphatha kunzima, umnotho umpofu, futhi isici sokuphepha siphansi uma kuqhathaniswa.
4, mechanical defrosting yokwenziwa
Uhlelo lokusebenza lokuncibilikisa amapayipi amancane okugcina abandayo:
I-cold storage pipe manual defrosting iyonga kakhulu, indlela yokuqala yokuqeda iqhwa.Isitoreji esikhulu esibandayo esine-defrosting okwenziwayo asiyona into engokoqobo, ukusebenza kwekhanda kunzima, ukusetshenziswa ngokomzimba kuyashesha kakhulu, isikhathi sokugcina endaweni yokugcina izinto side kakhulu futhi siyingozi empilweni, ukucwiliswa kweqhwa akulula ukuthi kuphelele, kungabangela i-evaporator. deformation, futhi ingase iphule ngisho ne-evaporator eholela ezingozini zokuvuza.
D. Ukukhetha indlela ye-fluorine defrosting system
Ngokuvumelana ne-evaporator ehlukene yendawo ebandayo, khetha indlela efanelekile yokuncibilikisa iqhwa.Inani elincane lezitolo ezibandayo ezincane zisebenzisa umnyango ovaliwe ukuze zincibilike ngokwemvelo zisebenzisa ukushisa komoya.Amanye amafriji okushisa omtapo wokushisa aphezulu akhetha ukumisa isiqandisi, avule isiphephetha-moya ngokuhlukana, asebenzise isiphephetha-moya ukuze azulise umoya ukuze ancibilike, futhi awaniki amandla amapayipi okushisa kagesi ukuze afinyelele inhloso yokonga amandla.
1, indlela yokuqeda iqhwa ye-cooler:
(1) Kukhona i-electric tube defrosting kanye ne-water defrosting ingakhethwa, izindawo ezinamanzi angcono kakhulu zingakhetha ukukhetha i-water defrosting chiller, izindawo zokushoda kwamanzi zikhetha ukukhetha i-electric tube defrosting chiller.
(2) i-electric tube defrosting isetshenziswa kakhulu ekunciphiseni umoya opholile;I-water flushing frost chiller ngokuvamile ilungiswa ku-air conditioning enkulu, ohlelweni lwesiqandisi.
2. Indlela yokuncibilika yomugqa wensimbi:
Kukhona i-fluorine defrosting eshisayo kanye nezinketho zokuqeda amaqhwa okwenziwa.
3. Indlela yokuqeda iqhwa yeshubhu ye-aluminium:
Kukhona i-thermal fluoride defrosting kanye nezinketho zokunciphisa ukushisa okushisayo kukagesi.
E. isitoreji esibandayo isikhathi defrosting
Manje ukuncishiswa kwamaqhwa kwesitoreji esiningi kulawulwa ngokuya nge-defrosting temperature probe noma isikhathi sokuncibilika.Imvamisa yokuqeda iqhwa, isikhathi, kanye nezinga lokushisa lokumiswa kweqhwa kufanele kulungiswe ngokuya ngenani nekhwalithi yezimpahla ezistakiwe.
Ekupheleni kwesikhathi se-defrosting, bese kuthi isikhathi sokudonsa, i-fan iqale.Qaphela ukuthi ungabeki isikhathi sokuqothula isikhathi eside futhi uzame ukufeza ukuchithwa okunengqondo.(Umjikelezo wokuqeda iqhwa ngokuvamile usekelwe esikhathini sokuphakelwa kwamandla noma isikhathi sokuqalisa i-compressor.)
F. Ukuhlaziywa kwezimbangela zesithwathwa esiningi
Kunezizathu eziningi ezithinta ukwakheka kwesithwathwa, njengalezi: isakhiwo se-evaporator, indawo yomoya (izinga lokushisa, umswakama) kanye nezinga lokugeleza komoya.Imiphumela ekwakhekeni kwesithwathwa nokusebenza kokupholisa umoya imi kanje:
1, umehluko wezinga lokushisa phakathi komoya ongenisayo kanye nesiphephetha-moya sokugcina esibandayo;
2, umswakama womoya ophefumulelwe;
3, ukuhlukanisa iziphetho;
4, izinga lokugeleza komoya ongenisayo.
Lapho izinga lokushisa lokugcina lingaphezu kuka-8℃, uhlelo oluvamile lokugcina olubandayo cishe alushisi;Lapho izinga lokushisa le-ambient lingu-5℃ ~ 3℃ kanye nomswakama ohlobene nomoya mkhulu, isipholile somoya kulula ukusithela;Uma izinga lokushisa le-ambient lehliswa, isivinini sokwakheka kwesithwathwa siyehla ngenxa yokuthi umswakama osemoyeni uyancipha.
Isikhathi sokuthumela: Dec-12-2023