Ⅰ. Qhuav evaporator
Cov refrigerant ntawm cov evaporator qhuav dhau los ntawm lub tshav kub exchanger tube, thiab cov dej txias khiav tawm sab nraum lub high-efficiency heat exchange tube. Qhov zoo dua yog tias cov roj tuaj yeem rov qab tau thiab kev nthuav dav tuaj yeem tswj tau, thiab tus nqi them cov tub yees yog kwv yees li 1/2 ~ 1/3 ntawm cov dej nyab uas them nyiaj.
Ⅱ, dej nyab evaporator
Cov dej nyab evaporator ua haujlwm nyob rau hauv qhov sib txawv ntawm cov evaporator qhuav. Cov dej txias dhau los ntawm cov raj xa hluav taws xob, thiab cov tub yees ua kom tag nrho cov raj xa hluav taws xob. Tom qab absorbing tshav kub, nws evaporates sab nraum lub tshav kub exchangers raj. Muaj ntau lub koob zoo li lub qhov me me ntawm lub raj, thiab muaj cov kauv protrusions nyob rau sab hauv ntawm lub raj kom ntxiv dag zog rau kev sib pauv cua sov ntawm sab dej txias. Qhov no high-efficiency tshav kub hloov raj, uas ib txhij txhim kho boiling sab nraum lub raj thiab tshav kub hloov mus rau hauv lub raj, txhim kho lub tshav kub hloov coefficient ntawm li 5 npaug piv nrog lub liab qab raj.
Ⅲ, ntog zaj duab xis evaporator
Cov evaporator ntog, tseem hu ua cov tshuaj tsuag evaporator, zoo ib yam li cov evaporator dej nyab, tab sis nws txawv ntawm cov dej nyab evaporator. Cov refrigerant ntawm cov evaporator no yog txau los ntawm sab sauv ntawm lub tshav kub exchanger mus rau lub tshav kub exchanger tube, thiab cov tub yees tsuas yog tsim ib tug nyias txheej ntawm cov kua refrigerant zaj duab xis nyob rau hauv lub tshav kub exchanger raj, kom lub refrigerant txo thaum nws boils thiab evaporates. Cov kua dej zoo li qub tau zoo dua qub, yog li txhim kho qhov kev sib hloov ntawm cov cua sov, thiab nws cov kev sib pauv cua sov yog li 5 npaug siab dua li ntawm chav dej nyab.
Poob zaj duab xis evaporation yog ntws boiling. Txij li thaum lub thickness ntawm cov kua zaj duab xis txheej nyob rau sab nrauv ntawm lub raj yog me me, tsis muaj qhov nce ntawm qhov kub ntawm qhov kub siab tshwm sim los ntawm qhov zoo li qub, thiab cov cua sov hloov coefficient siab. Txawm li cas los xij, cov npuas uas tsim los ntawm cov dej nyab evaporation (uas yog, cov evaporation submerged) yog ib qho yooj yim mus rau hauv qhov chaw ntawm lub tshav kub exchanger tube, uas ua rau ib tug txo nyob rau hauv lub tshav kub exchanger efficiency, thiab nws cov thermal exchange effect tsis zoo li poob. zaj duab xis evaporation. Feem ntau hais lus, ntog zaj duab xis evaporation belongs rau cov ntaub ntawv ntawm qhov sib txawv ntawm qhov kub thiab txias, tab sis nws yog ib qho tsim nyog los tiv thaiv scaling thiab cuam tshuam rau kev hloov pauv ntawm tshav kub.
Ⅳ, qhov zoo thiab qhov tsis zoo ntawm cov evaporator qhuav thiab dej nyab
Nyob rau hauv lub plhaub dej nyab thiab lub raj evaporator, cov dej ntws hauv cov raj, thiab cov tub yees evaporates sab nraum lub raj, yog li qhov kub hloov mus rau qhov chaw yog qhov tseem ceeb hauv kev sib cuag nrog cov kua refrigerant. Feem ntau, tus nqi ntawm cov tub yees tau them rau hauv lub plhaub yog li 55 feem pua \\ x7e65 feem pua ntawm cov ntim zoo ntawm lub tog raj kheej. Tom qab cov kua refrigerant absorbs tshav kub thiab vaporizes, nws rov qab mus rau lub compressor los ntawm cov kua separator nyob rau sab saum toj ntawm lub tog raj kheej. Kev khiav hauj lwm yooj yim thiab kev tswj hwm, siab hloov pauv coefficient.
Nws qhov tsis zoo yog:
① Thaum lub evaporation kub ntawm lub tub yees txias yog qis dua 0 degree, cov dej nyob rau hauv lub raj yog ib qho yooj yim rau khov thiab puas lub evaporation raj;
② Cov nqi ntau ntawm cov tub yees;
③ Muaj kev cuam tshuam los ntawm qhov siab ntawm cov khoom ua kua refrigerant, evaporation kub nyob rau hauv qab ntawm lub tog raj kheej yog siab dhau lawm, uas yuav decompose lub tshav kub hloov kub sib txawv;
④ Cov roj yuav khaws cia nyob rau hauv qis qis ntawm lub evaporator lub tog raj kheej, thiab cov roj txhim khu kev qha rov qab yuav tsum tau ntsuas, txwv tsis pub kev ua haujlwm nyab xeeb ntawm lub cev yuav raug cuam tshuam.
Nyob rau hauv qhuav plhaub-thiab-tube evaporators, uas yog, uas tsis yog dej nyab evaporators, cov refrigerant ntws nyob rau hauv cov hlab, thiab cov dej ntws tawm sab nraum lub raj pawg. Kev khiav ntawm cov tub yees feem ntau muaj ntau yam txheej txheem. Vim lub vaporization ntawm cov kua refrigerant maj mam, feem ntau cov kev taw qhia siab dua, ntau cov txheej txheem cov raj. Txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau dej, nws raug nquahu kom siv cov baffles ntau zaus hauv cov txheej txheem kev hloov pauv ntawm cov kav dej kub ntawm lub tog raj kheej, kom cov dej tuaj yeem txav mus los ntawm cov raj ntau zaus.
Nws qhov zoo yog:
① Lubricating roj nkag mus rau hauv compressor nrog lub tub yees, thiab feem ntau tsis muaj teeb meem ntawm cov roj tsub zuj zuj.
② Tus nqi ntawm cov tub yees tau them tsawg dua, feem ntau tsuas yog kwv yees li 1/3 ntawm hom dej nyab;
③Thaum qhov kub thiab txias nyob ze 0 degree, dej yuav tsis khov.
Tab sis siv cov evaporator no yuav tsum xyuam xim rau:
① Cov tub yees muaj ntau yam txheej txheem. Yog tias lub kaum sab xis ntawm lub hau kawg tsis tau ua kom zoo, cov kua nplaum yuav tshwm sim, uas yuav ua rau cov kua xa tawm mus rau hauv cov txheej txheem tom ntej tsis sib xws thiab cuam tshuam rau cov nyhuv tshav kub;
②Muaj ib qho teeb meem ntawm cov dej ntws tawm, vim tias feem ntau muaj qhov sib txawv ntawm 1 x 7e3mm ntawm sab nrauv ntawm lub baffle thiab lub plhaub, thiab qhov sib txawv ntawm li 2 hli ntawm cov baffle thiab lub tshav kub hloov raj, uas yuav ua rau cov dej ntws tawm. . Kev xyaum tau ua pov thawj tias cov dej xau yuav ua rau cov dej sab nraud cov hluav taws xob hloov hluav taws xob txo qis los ntawm 20 feem pua mus rau 30 feem pua , thiab tag nrho cov hluav taws xob hloov hluav taws xob los ntawm 5 mus rau 15 feem pua.