2.Absulute ntsuam xyuas:
Kev ntsuam xyuas tsis zoo kuj yog ib qho qhia txog kev lim dej precision specifications Qhov kev ntsuam xyuas qhov tseeb yog txhais tau hais tias qhov siab tshaj plaws particle txoj kab uas hla tuaj yeem dhau los ntawm lub lim, Hauv microns, qhov no yog qhov siab tshaj qhov pore loj ntawm lub lim, yog tias qhov teeb meem Particulate loj dua qhov pore loj, nws tsis tuaj yeem dhau los ntawm cov khoom lim, yog li nws tau lim kom tshem tawm.Kev ntsuas qhov tseeb yog qhov tseeb dua li qhov ntsuas nominal thiab zoo dua qhia qhov tsawg kawg nkaus qhov loj me uas lub lim tuaj yeem cuam tshuam, Tab sis cov khoom tsis yog txhua tus kheej kheej.Lawv yog cov tsis zoo heev nyob rau hauv cov duab, Tsis tas li ntawd, lub qhov lim ntawm lub lim caij yuav tsis sib npaug vim yog cov txheej txheem ua li ntawd tseem yuav muaj cov ntses loj dua los ntawm lub vas.Yog li ntawd, muaj qee qhov sib txawv ntawm qhov ntsuas qhov tseeb thiab kev siv tswv yim
3. Beta Rating:
Tam sim no, qhov taw qhia feem ntau ntawm kev lim dej raug thiab ua haujlwm tau zoo yog qhov Beta Rating (Beta tus nqi).Qhov Kev Ntsuas Beta yog qhov pom qhov sib piv, uas yog qhov piv ntawm tus lej ntawm qee qhov pore me me uas muaj nyob rau hauv cov kua hauv cov dej ntws thiab cov dej ntws. ntawm lub lim caij, Thaum kuaj pom cov nyhuv lim dej ntawm cov khoom lim.Ua ntej, tus naj npawb thiab qhov loj ntawm impurity hais ntawm ib qho me me hauv ib chav tsev ntim hauv cov roj ntws ntws ntawm cov khoom lim tau kuaj pom los ntawm cov khoom ntsuas particle.Tom qab ntawd, tus naj npawb thiab ntim ntawm cov khoom nyob rau hauv cov roj downstream ntawm lub lim yog ntsuas.Tom qab ntawd, tus naj npawb ntawm cov dej ntws tau muab faib los ntawm tus naj npawb ntawm cov dej ntws, thiab qhov sib piv tau txais yog qhov pom qhov piv
Piv txwv li, thaum cov dej ntws ntws tawm ntawm cov khoom lim tau pom, tus naj npawb ntawm cov khoom uas muaj qhov loj dua 5 microns yog 10.Tom qab kev lim dej los ntawm cov khoom lim, cov xov tooj ntawm cov khoom siab tshaj 5 microns ntsuas hauv qab yog 1, ces txheeb ze mus rau qhov tseeb theem ntawm 5 microns, qhov pom qhov piv ntawm cov khoom lim yog 10/1 = 10, cim raws li β5 = 10.Obviously, qhov ntau dua tus nqi β, qhov zoo dua cov nyhuv lim.Thaum xaiv cov lim caij, ntxiv rau. mus rau qhov tseeb filtering, tab sis kuj mus saib cov filtering ratio.Nyob 5 micron hais raws li ib tug piv txwv, yog hais tias lub upstream ntsuas particles yog 1 lab / mL, ces tus coj downstream kom muaj nuj nqis thiab pom muaj nyob rau hauv cov lus nram qab no:
Yog hais tias lub lim efficiency ntawm lub lim lim yog sawv cev los ntawm feem pua, cov mis hloov dua siab tshiab yog ((β-1) / β-value) x 100. Piv txwv li, nyob rau hauv cov lus saum toj no, β-tus nqi yog 20, thiab qhov feem pua ntawm cov conversion. ntawm cov lim efficiency yog
201) / 20 = 19/20 = 0.95,0.95 * 100 = 95%
Yog li, rau lub lim dej nrog qhov tseeb ntawm 5 microns, yog tias tus nqi β yog 10, qhov feem pua ntawm cov lim dej yog 90%, thiab rau cov impurities uas muaj qhov loj dua lossis sib npaug li 5 microns, 90% tuaj yeem lim tau, Nws Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias txawm hais tias beta tuaj yeem pab peb kom nkag siab txog cov txiaj ntsig lim dej, muaj cov txiaj ntsig siv, tab sis cov beta qhia pom tias kev ua haujlwm zoo yuav txawv me ntsis nrog kev hloov pauv ntawm cov dej ntws thiab qhov kub thiab txias, xaiv cov khoom siv lim, yuav tsum tau them sai sai. mus rau kev siv qhov kub thiab txias, qhov tseeb txaus tus nqi, cov khoom siv lim cov nyhuv ntawm viscosity thiab lwm yam kev mob
Tsis tas li ntawd, tus nqi β tsis tuaj yeem piav qhia lub lim lub peev xwm nqa tau, hauv kev siv, yog tias cov pa phem nqa lub peev xwm me me, thiab cov pa phem hauv cov khoom kuj hnyav, lub lim lim yuav sai sai no, yog li cuam tshuam rau kev siv.Yog li ntawd, yog li thaum koj yuav, koj yuav tsum tau paub cov pa phem nqamuaj peev xwm ntawm cov lim eleme
Post lub sij hawm: Lub Xya hli ntuj-22-2021