Dab tsi yog hom finned raj uas tuaj yeem faib raws li lawv cov qauv kev ua haujlwm?

Dab tsi yog hom finned raj uas tuaj yeem faib raws li lawv cov qauv kev ua haujlwm?

1. Lub tswv yim ntawm finned raj

Finned tube yog ib hom kev sib pauv cua sov feem ntau tsim los txhim kho cov hluav taws xob hloov hluav taws xob. Feem ntau, cov fins tau ntxiv rau saum npoo ntawm lub tshav kub hloov raj kom nws qhov chaw sab nrauv (lossis sab hauv cheeb tsam), yog li ua tiav lub hom phiaj ntawm kev txhim kho cov cua sov kom zoo.

2. Muaj pes tsawg hom finned tubes tuaj yeem raug cais raws li lawv cov qauv kev ua haujlwm?

Tam sim no, hom kev siv ntau tshaj plaws thiab siv dav hauv tsev thiab txawv teb chaws yog hom phab ntsa, thiab kev tsim thiab kev suav ntawm lwm hom kev sib hloov cua sov feem ntau cia siab rau cov phab ntsa ntawm cov khoom siv hluav taws xob. Raws li cov cuab yeej siv thoob ntiaj teb, cov khoom siv hluav taws xob tuaj yeem raug cais raws li lawv cov qauv kev ua haujlwm rau hauv hom phab ntsa, hom hybrid, thiab hom khoom cua sov.

Thaum cov evaporator siv nyob rau hauv qhov kub thiab txias tshuab nrog finned tubes ua hauj lwm nyob rau hauv tsis tshua muaj kub tej yam kev mob (hauv qab no 0 degree), muaj ib tug ntau teeb meem ntawm frosting ntawm nws nto. Qhov cuam tshuam ntawm Frost ntawm kev ua haujlwm ntawm cov khoom siv hluav taws xob tau tshwm sim hauv ob yam: txo lawv cov coefficient ntawm cov cua sov thiab ua kom huab cua tsis kam. Cov qauv tsim hluav taws xob tsim nyog yuav tsum tau ua tib lub sijhawm txo cov teebmeem no. Thaum Frost pib tsim, qhov roughness ntawm lub evaporator nce, ua rau muaj kev nce rau hauv tshav kub hloov chaw thiab cov roj ntws. Yog li ntawd, nyob rau hauv thaum ntxov theem ntawm Frost tsim, lub tshav kub hloov coefficient K nce. Txawm li cas los xij, raws li cov txheej txheej Frost tseem thicken, thermal resistance ntawm tshav kub hloov mus nce, thiab thaum kawg lub tshav kub hloov coefficient K txo.

Thaum cov cua ntws dhau los ntawm cov evaporator, vim qhov kev tso dej tsis tu ncua ntawm cov pa hauv cov huab cua ntawm qhov chaw ntawm cov hlab finned, qhov txheeb ze ntawm cov huab cua txo qis, thiab cov te nyob rau saum npoo ntawm cov finned coils raws li airflow kev taw qhia maj mam. txo. Yog li ntawd, cov Frost ntawm thawj ob peb kab ntawm finned tubes nyob rau hauv lub evaporator yog hnyav dua, thaum lub Frost ntawm ob peb kab kawg ntawm cov hlab yog lub teeb.

Yog tias cov qauv uas muaj qhov sib txawv pitch fins tau txais yuav, qhov sib nrug ntawm cov fins downstream raws cov cua kev taw qhia yuav me dua thiab me dua, uas tuaj yeem tswj hwm nws cov kev hloov pauv kub hauv cov xwm txheej frosting thiab ncua nws lub sij hawm Frost flushing. Tom qab siv qhov sib txawv pitch finned tube qauv nyob rau hauv lub evaporator, thaum huab cua longitudinally sweeps staggered finned tubes, staggered tis ntawm cov hlab finned ua rau cov upstream finned tubes muaj ib tug txaus nyob ib ncig ntawm lub downstream finned tubes, pab txhawb lub tshav kub hloov chaw pem hauv ntej ib nrab ntawm cov finned hlab. Kev faib tawm ntawm lub nraub qaum finned tubes kuj ua rau cov dej ntws ntws thiab ua kom cov dej ntws nrawm dua, yog li txhim kho cov cua sov hloov ntawm lub nraub qaum ib nrab ntawm cov hlab finned.

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