Tus yuam sij rau kev xaiv ntawm aphaj kub exchangeryog kom nkag siab txog cov ntsiab lus tseem ceeb xws li nws cov khoom siv, kev ua haujlwm siab, tsim qhov kub thiab txias, cov yam ntxwv ntawm kev tshaj tawm, thiab kev lag luam. Nyob rau hauv tib qhov tsis kam poob, tau txais qhov siab tshaj plaws hloov pauv coefficient kuj yog qhov tseem ceeb rau kev ntsuas nws qhov kev ua tau zoo.Phaj hom xaiv
Kev xaiv ntawm cov phaj hom lossis hom corrugated yuav tsum tau txiav txim siab raws li qhov tseeb ntawm qhov chaw hloov hluav taws xob. Yog tias tus nqi ntws loj thiab qhov tso cai poob qis me me, ces cov phaj hom uas muaj kev tiv thaiv me me yuav tsum tau xaiv, thiab rov ua dua, cov phaj hom nrog loj kuj yuav tsum tau xaiv. Nyob rau tib lub sijhawm, raws li lub siab thiab qhov kub thiab txias ntawm cov kua dej, los txiav txim siab qhov kev xaiv ntawm kev tshem tawm los yog brazed hom. Thaum xaiv hom phaj, koj yuav tsum tsis txhob xaiv cov phaj nrog me me dhau ntawm qhov chaw veneer. Vim tias thaj tsam ntawm ib lub phaj me me dhau lawm, cov phaj loj loj, cov hneev taw yog qhov loj, thiab qhov ntws ntawm cov phaj me me, ua rau cov coefficient ntawm cov cua sov tsawg dhau; ntawm qhov tsis sib xws, thaj chaw ib phaj loj dhau lawm, cov ntawv phaj me me, cov hneev taw me me, tab sis qhov kev tiv thaiv poob nce, thiab nws yog qhov nyuaj los xyuas kom meej qhov txaus txaus ntawm daim hlau. Rau cov khoom siv hluav taws xob loj dua, qhov teeb meem no xav tau kev saib xyuas ntau dua. Feem ntau, thaj chaw veneer tuaj yeem txiav txim siab raws li lub kaum qhov dej ntws ntawm kwv yees li 6m / s.Flow thiab flow channel xaiv
Flow yog hais txog tib cov kua hauv lub phaj kub exchanger nyob rau hauv tib txoj kev khiav ntawm ib pab pawg neeg ntawm parallel flow paths, thaum lub flow txoj kev yog hais txog lub phaj kub exchanger nyob rau hauv ob daim hlau uas nyob ib sab uas muaj xws li xov xwm flow channels. Feem ntau, yuav muaj ob peb txoj hauv kev sib txuas ua ke los yog hauv cov koob los tsim cov kev sib txawv ntawm cov xov xwm kub thiab txias. Daim ntawv ntawm kev sib xyaw ua ke yuav tsum yog raws li kev hloov pauv ntawm cov cua sov thiab cov kua dej tsis haum, kom ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem los txiav txim siab. Thaum ob sab ntawm cov dej ntws sib npaug sib npaug, ib tus yuav tsum sim npaj raws li qhov sib npaug; qhov sib txawv ntawm qhov sib txawv yog qhov loj, qhov ntws ntawm qhov me me ntawm cov txheej txheem ntau txheej txheem, los yog siv qhov sib npaug ntawm qhov sib npaug ntawm cov phaj phaj kub exchanger. Tsis tas li ntawd, thaum kub nce lossis kub poob ntawm qhov nruab nrab yog qhov loj, kuj tuaj yeem siv rau ntau yam txheej txheem. Muaj ib theem kev hloov pauv uas tshwm sim nyob rau sab ntawm ib qho txheej txheem dav dav, thiab lub interface rau sab sauv inlet thiab qis qhov hluav taws xob. Nyob rau hauv multi-txheej txheej txheem kub exchanger, tib cov kua yuav tsum tau siv nyob rau hauv txhua tus txheej txheem nrog tib tus naj npawb ntawm ntws raws. Thaum tshav kub kub exchanger siab poob kho qhov tseem ceeb, ib qho txheej txheem coj 1.2 ~ 1.4, 2 ~ 3 txheej txheem coj 1.8 ~ 2.0, 4 ~ 5 txheej txheem coj ~ 2.6 ~ 2.8.Kev xaiv tus nqi ntws ntawm cov phaj
Tus nqi ntws nruab nrab ntawm cov phaj cuam tshuam rau kev hloov pauv cua sov thiab kev poob siab. Peb yuav tsum sim ua kom sab nrog me me hloov pauv coefficient tau txais qhov loj txaus, thiab tib lub sijhawm ua kom cov cua sov hloov coefficient ntawm ob sab ntawm ob qhov dej hloov hluav taws xob sib npaug los yog zoo sib xws, kom tau txais kev hloov hluav taws xob ntau dua coefficient. , kom ua tiav qhov zoo tshaj plaws tshav kub hloov nyhuv. Ib tug siab txaus tus nqi, thiab ib tug high tshav kub hloov coefficient, tab sis lub kuj poob kuj nce; conversely, qhov opposite. Feem ntau, coj tus nqi ntws nruab nrab ntawm daim hlau rau {{0}}.2-0.8m/s, thiab sim ua kom ob lub phaj dej nrawm sib xws. Tus nqi ntws tsawg dua 0.2m / s, cov kua dej tsis tuaj yeem ncav cuag lub xeev turbulent, thiab yuav tsim ib qho chaw tuag loj; ib tug txaus tus nqi siab dhau lawm yuav ua rau ib tug ntse nce nyob rau hauv drag-poob, thiab cov pa roj ntws ntawm cov paib feem ntau tsis ntau tshaj 10m / s. Xaiv cov kev taw qhia ntws
Nyob rau hauv ib-theem tshav kub hloov, countercurrent muaj qhov loj tshaj plaws nruab nrab kub sib txawv, yog li nyob rau hauv tsim ntawm lub phaj kub exchanger, peb yuav tsum tau ntau npaum li sai tau los npaj cov kua rau countercurrent. Thaum cov kua dej ntawm ob sab sib npaug, nws yog counterflow; Thaum cov kua dej ntawm ob sab tsis sib npaug, cov dej ntws hauv qab hloov pauv nrog qhov sib txawv, thiab qhov nruab nrab kub qhov sib txawv me dua li cov ntshiab counterflow. Siab poob calibration
Nyob rau hauv lub phaj kub exchanger tsim xaiv, peb feem ntau muaj tej yam yuav tsum tau rau lub siab poob, yog li nws yuav tsum tau calibrated. Yog hais tias lub calibration siab poob siab tshaj qhov tso cai poob siab, yuav tsum tau rov tsim cov kev xaiv xaiv, kom txog rau thaum ua tau raws li cov txheej txheem yuav tsum tau. Kev suav cov coefficient ntawm cov cua kub hloov pauv thiab kev poob siab feem ntau yog xam los ntawm kev ua haujlwm nkhaus ntawm txhua qhov chaw tsim khoom cov khoom. Cov kev ua haujlwm nkhaus (cov lus qhia kev sib raug zoo) feem ntau yog muab los ntawm cov khoom ntsuas kev ua tau zoo. Rau qhov tsis muaj kev ntsuas kev ua tau zoo ntawm lub phaj, tab sis kuj los ntawm kev siv qhov loj me, raws li cov yam ntxwv ntawm lub phaj geometry ntawm lub phaj kom tau txais cov qauv cuam tshuam nrog lub phaj, qee qhov kev siv thoob ntiaj teb dav siv hauv txoj kev no. Lwm yam kev ceev faj
1, uas muaj cov dej qias neeg qias neeg yuav tsum tau lim mus rau hauv lub tshav kub exchanger.
2, qhov sib txawv ntawm qhov sib txawv ntawm qhov me me ntawm cov kua dej sib cuam tshuam yuav tsum tsis txhob loj dhau, thiab yuav tsum muaj peev xwm ua tau raws li qhov yuav tsum tau muaj ntawm lub siab poob.
