Qee qhov teeb meem muaj nyob rau hauv daim ntawv thov ntawm phaj kub exchanger hauv cov khoom siv tub yees
Tam sim no, phaj kub exchanger tau siv rau hauv cov tub yees me me (dej txias) cov cuab yeej, thiab nws daim ntawv thov yuav nthuav dav ntxiv. Qhov no feem ntau yog vim qhov kev ua tau zoo ntawm kev sib pauv cua sov ntawm phaj kub exchanger, ntim me me, lub teeb yuag, thiab kev txhim kho txuas ntxiv ntawm kev nyab xeeb thiab kev ntseeg siab ntawm phaj kub exchanger. Ntawm qhov tod tes, cov txiaj ntsig siv tau zoo. Txawm li cas los xij, muaj qee qhov teeb meem.
Vim hais tias lub phaj kub exchanger muaj ib tug muaj zog sib pauv peev xwm (nws lub tshav kub hloov coefficient yog ob peb zaug ntawm cov pa cua kub exchanger, lub tshav kub exchanger cheeb tsam ib chav tsev ntim yog loj), thiab me me ntim, lub teeb yuag. Yog li ntawd, nws tau nyiam los ntawm cov kws tshawb fawb thiab cov neeg siv. Txawm li cas los xij, kev ua haujlwm siab thiab sealing kev ua tau zoo ntawm phaj kub exchanger tsis zoo, uas txwv tsis pub siv phaj kub exchanger hauv engineering.
Yav dhau los, lub phaj kub exchanger yog tsuas yog siv nyob rau hauv lub tshuab ntxhua khaub ncaws ua hauj lwm nruab nrab, lub siab ua hauj lwm tsis siab dhau heev lawm, qhov yuav tsum tau to yuav tsis hnyav heev, lub to yuav tsis muaj kev cuam tshuam zoo rau ib puag ncig thiab kev ua hauj lwm nruab nrab ntawm cov khoom, xws li siv nyob rau hauv pej xeem cov dej kub pauv qhov system thiab chav dej kub pauv qhov system.
Tam sim no, cov khoom siv tub yees siv phaj kub exchanger, feem ntau yog ib co khoom me me, feem ntau yog imported brazed phaj kub exchanger. Raws li kev siv cov phaj kub sib cais ntawm lub condenser thiab evaporator ntawm lub chiller loj, nws yog qhov ua tau, tab sis peb tsis tau pom cov ntaub ntawv tseem ceeb. Qhov ntawd yog hais tias, tib neeg muaj qee qhov kev txhawj xeeb txog kev nthuav dav ntxiv thiab kev siv phaj kub hloov pauv hauv kev lag luam tub yees, thiab nws txoj kev nyab xeeb thiab kev ntseeg tau thiab cov teeb meem cuam tshuam yuav tsum tau daws ntxiv.
Tam sim no coj cov khoom siv tub yees siv los ua piv txwv rau kev tshuaj xyuas
Cov cuab yeej siv ob 7.5-inch Meyule cua txias chav ua haujlwm ua haujlwm sib luag los tsim cov dej txias los tsim cov npias tshiab rwb thaiv tsev tank, rwb thaiv tsev tank txias, ntxiv tshuaj tiv thaiv kab mob hauv cov dej txias los tswj qhov chaw khov ntawm txog {{2 }} degree, dej txias qhov kub tswj taw tes yog teem rau ntawm lub phaj evaporator inlet, tswj kub ntawm 2 ~ 4 degree.
Qhov teeb meem tseem ceeb ntawm cov khoom siv no yog lub phaj evaporator khov thaiv. Lub kaw lus ua haujlwm ib txwm nyob rau hauv qhov kub thiab txias, tab sis nws yog ib qho yooj yim kom khov thaiv nyob rau hauv qhov kub thiab txias (thaum lub qhov kub ntawm qhov hluav taws xob yog li 2 degree thiab chav tsev tab tom yuav kaw). Thaum lub phaj evaporator freezes, qhov kev ua hauj lwm deteriorates sharply, thiab tag nrho cov sab hauv ntawm lub phaj evaporator yuav khov nyob rau hauv ib tug luv luv lub sij hawm.
Lub phaj tshav kub exchanger yog qhov ua rau tuag taus rau lub phaj kub exchanger, vim hais tias lub phaj kub exchanger yog ib tug kuj ilv khoom, lub thickness ntawm lub tshav kub exchanger yog heev me me, tsis muaj peev xwm tiv taus qhov cuam tshuam ntawm sab nraud quab yuam, thaum lub freezing blockage tshwm sim, dej khov. crystal expansion yuav ncaj qha ua rau lub tshav kub exchanger internal deformation los yog to. Nws muaj kev cuam tshuam zoo rau kev ua haujlwm thiab tsim cov khoom siv tub yees
Kev soj ntsuam ntawm cov teeb meem
Ua ntej, lub tshuab tub yees tsis sib haum, lub evaporator me me; Los yog vim yog lub sijhawm ua haujlwm ntev ntawm chav tsev, lub peev xwm hloov hluav taws xob ntawm lub phaj evaporator txo qis vim qhov ntsuas thiab fouling hauv cov evaporator. Ua rau qis evaporation kub (-10 degree ) hauv cov txheej txheem ua haujlwm tiag tiag.
1. Qhov ntsuas kub ntawm evaporation yog qis dua qhov chaw khov ntawm cov dej txias, uas ua rau muaj peev xwm ua kom khov khov ntawm cov phaj evaporator.
2, lub evaporator kub hloov kub qhov sib txawv yog loj, tsis muab tag nrho cov kev ua si rau qhov zoo ntawm phaj evaporator nws tus kheej, yog tsis conducive rau kev txhim kho cov tub yees efficiency. Thaum cov dej txias inlet kub yog 2 degree (qhov kub ntawm qhov sib txawv ntawm cov dej hauv thiab tawm ntawm lub evaporator yog 5 degree), lub qhov hluav taws xob qhov hluav taws xob kub yog -3 degree, thiab qhov kub hloov pauv kub yog 9.3 degree. Vim tias lub phaj evaporator muaj qhov sib txawv ntawm cov cua kub sib txawv, nws qhov sib txawv ntawm qhov kub thiab txias yuav tsum tsawg dua li cov khoom siv hluav taws xob sib txawv, piv txwv li, xaiv txog 2 degree.
Qhov thib ob, qhov dej txias txias yog qhov siab. Thaum lub evaporator khiav ntawm qhov ntsuas kub qis (qhov kub ntawm qhov hluav taws xob 2 degree), qhov hluav taws xob kub tsuas yog 3 degree siab dua qhov chaw khov. Qhov ntawd tsis yog hais tias nws yuav tsis raug tso cai hauv kev xyaum, tab sis nws ua rau muaj peev xwm ntawm cov dej khov khov, yuav tsum tau tswj xyuas qhov kub thiab txias. Tsis tas li ntawd, cov dej txias nyob ze ntawm qhov chaw khov muaj cov viscosity loj thiab cov dej tsis zoo, thiab cov seem ntws ntawm lub phaj evaporator yog me me, yog li nws tsim nyog siv qhov nruab nrab ua haujlwm nrog cov dej zoo. Yog li ntawd, yog tias ua tau, kev ntsuas yuav tsum tau ua kom txo qis qhov chaw khov, ua kom lub qhov hluav taws xob kub ntawm cov dej txias, thiab ua kom cov dej txias nce ntxiv.
Peb, cov cuab yeej tswj tsis zoo tag nrho. Qhov pib thiab nres ntawm lub twj tso kua dej txias tsis cuam tshuam nrog kev ua haujlwm ntawm lub tub yees, thiab cov dej txias ntws thiab siab poob ntawm cov evaporator tsis raug kuaj thiab tswj. Txawm hais tias lub tshuab tub yees muaj lub siab tswj qis, nws tsuas yog siv los tswj qhov xoom siab kaw ntawm lub compressor (kom tiv thaiv lub phaj evaporator los ntawm kev coj tus kheej siab thaum cov khoom siv tsis ua haujlwm ntev) thiab tsis muaj qhov qis. kev tiv thaiv kev ua haujlwm siab. Thaum lub twj tso kua mis nres los yog cov dej ntws hauv cov evaporator raug txo vim yog cov ntsaws ruaj ruaj, cov dej khov ntsaws yuav tshwm sim.
Plaub, kev saib xyuas tsis raug.
1. Lub inlet kub tswj tau nyob rau hauv disrepair rau ib tug ntev lub sij hawm, qhov tso tawm tus nqi yog hais txog 1.5 degree qis dua tus nqi tiag tiag, thiab cov cuab yeej yog inert heev los xav txog qhov kub ntawm dej txias inlet nyob rau hauv lub sij hawm. Hauv cov txheej txheem ua haujlwm tiag tiag yuav ua rau cov dej txias divisor kub nyob ze rau qhov chaw khov thiab lub tsev tseem tsis raug kaw.
2. Txawm hais tias lub phaj evaporator tau nruab nrog cov khoom siv tiv thaiv kom khov thiab thaiv qhov kub thiab txias, cov cuab yeej tiv thaiv khov thiab thaiv cov khoom siv feem ntau tsis ua haujlwm vim tias cov dej khov thaiv tau tshwm sim. Vim tias qhov dej txias qhov hluav taws xob kub yog ze rau qhov chaw khov, nws tsis yooj yim los kho nws mus rau qhov chaw tswj qhov zoo tshaj plaws.
Tsib, qhov tsis muaj refrigerant nyob rau hauv lub system kuj yuav ua rau freezing blockage. Qhov no txawv ntawm cov pa evaporator. Yog vim li cas muaj feem xyuam rau cov qauv ntawm phaj evaporator. Phaj cua sov exchanger yog tsim los ntawm ntau qhov chaw nqaim heev channel superimposed, txhua chav nyob rau hauv dej txias los yog refrigerant flow yog me me, tshav kub exchanger daim ntawv yog nyias, tshav kub exchanger muaj zog heev. Thaum lub kaw lus tsis txaus ntawm cov tub yees, nws yuav ua rau cov tub yees tsis sib npaug hauv txhua chav tsev channel, lub sijhawm no cov evaporation siab tsawg heev, thiab cov txwv cov chav nyob vim yog kub sib hloov thiab cov dej khov thaiv, thiab tom qab ntawd ua rau muaj qhov thaiv ntawm cov evaporation. cov chav tsev nyob ib sab channel, ua rau muaj cov tshuaj tiv thaiv kab mob, cov dej khov thaiv yog intensified kom txog thaum tag nrho cov evaporator yog khov tag.
