Kev ua tau zoo ntawm cov ntaub ntawv rwb thaiv tsev yog ib qho tseem ceeb hauv kev tsim qauv tsev thiab kev siv hluav taws xob zoo. Ntawm ntau yam uas cuam tshuam rau kev ua tau zoo ntawm rwb thaiv tsev, tus coefficient ntawm kev tiv thaiv dej vapor diffusion (μ) ua lub luag haujlwm tseem ceeb. Kev nkag siab txog tus coefficient no cuam tshuam li cas rau cov ntaub ntawv rwb thaiv tsev pab ua kom xaiv cov khoom zoo dua, yog li txhim kho kev ua tau zoo ntawm lub tsev.
Tus coefficient ntawm kev tiv thaiv dej vapor diffusion (feem ntau yog μ) yog ib qho cim qhia txog lub peev xwm ntawm cov khoom siv los tiv thaiv kev hla ntawm cov dej vapor. Nws yog txhais tias yog qhov sib piv ntawm kev tiv thaiv dej vapor diffusion ntawm cov khoom siv rau cov khoom siv siv (feem ntau yog huab cua). Tus nqi μ siab dua qhia txog kev tiv thaiv ntau dua rau kev sib kis ntawm cov dej noo; tus nqi μ qis dua qhia tias cov khoom siv tso cai rau ntau cov dej noo hla dhau.
Ib qho ntawm cov kev cuam tshuam tseem ceeb ntawm cov coefficient tiv thaiv dej vapor diffusion rau cov ntaub ntawv rwb thaiv tsev yog nws qhov cuam tshuam rau kev tswj cov av noo hauv cov khoom vaj khoom tsev. Cov ntaub ntawv rwb thaiv tsev uas muaj cov coefficient tiv thaiv dej vapor diffusion siab (μ tus nqi) zoo tiv thaiv cov av noo los ntawm kev nkag mus rau hauv txheej rwb thaiv tsev, uas yog qhov tseem ceeb rau kev tswj hwm kev ua haujlwm rwb thaiv tsev. Thaum cov ntaub ntawv rwb thaiv tsev ntub dej, lawv qhov kev tiv thaiv thermal txo qis ntau, ua rau kev siv hluav taws xob ntau ntxiv rau kev ua kom sov lossis txias. Yog li ntawd, kev xaiv cov ntaub ntawv rwb thaiv tsev nrog cov coefficient tiv thaiv dej vapor diffusion tsim nyog (μ tus nqi) yog qhov tseem ceeb kom ntseeg tau tias lawv tswj hwm kev ua haujlwm zoo tshaj plaws rau lub sijhawm ntev.
Tsis tas li ntawd xwb, tus coefficient ntawm kev tiv thaiv dej ntawm cov pa dej kuj tseem cuam tshuam rau qhov kev pheej hmoo ntawm kev sib sau ua ke hauv cov khoom siv hauv tsev. Hauv cov huab cua uas muaj av noo ntau lossis cov cheeb tsam uas muaj qhov sib txawv ntawm qhov kub thiab txias, cov dej noo yuav sib sau ua ke ntawm cov chaw txias dua. Cov ntaub ntawv rwb thaiv tsev uas muaj cov dej conductivity qis (μ tus nqi) yuav ua rau cov dej noo nkag mus rau hauv cov khoom siv thiab sib sau ua ke sab hauv, ua rau muaj teeb meem xws li kev loj hlob ntawm pwm, kev puas tsuaj ntawm cov qauv, thiab txo qis qhov zoo ntawm huab cua hauv tsev. Ntawm qhov tod tes, cov ntaub ntawv uas muaj cov dej conductivity siab tuaj yeem txo cov kev pheej hmoo no los ntawm kev txwv cov dej noo ntws, yog li txhim kho lub zog thiab lub neej ua haujlwm ntawm lub tsev.
Thaum xaiv cov ntaub ntawv rwb thaiv tsev, yuav tsum xav txog qhov xwm txheej ntawm daim ntawv thov thiab cov xwm txheej ib puag ncig. Piv txwv li, nyob rau hauv huab cua txias uas muaj kev pheej hmoo ntawm kev ua kom dej noo ntau, nws raug pom zoo kom siv cov ntaub ntawv rwb thaiv tsev uas muaj cov dej noo ntau uas tiv taus cov pa dej. Qhov no pab ua kom cov txheej rwb thaiv tsev qhuav thiab tswj nws cov kev ua haujlwm rwb thaiv tsev. Ntawm qhov tod tes, nyob rau hauv huab cua sov thiab noo noo, yuav tsum tau ua lag luam. Txawm hais tias qee qhov kev tiv thaiv dej noo yog qhov tsim nyog, qhov coefficient conductivity dej siab dhau (μ tus nqi) tuaj yeem ua rau dej noo nyob hauv phab ntsa, ua rau muaj lwm yam teeb meem. Yog li ntawd, kev nkag siab txog huab cua hauv zos thiab cov kev xav tau tshwj xeeb ntawm lub tsev yog qhov tseem ceeb thaum xaiv cov ntaub ntawv rwb thaiv tsev.
Ntxiv rau kev tswj cov av noo, qhov coefficient tiv taus cov pa dej kuj tseem cuam tshuam rau kev siv hluav taws xob ntawm lub tsev tag nrho. Kev xaiv cov ntaub ntawv rwb thaiv tsev kom zoo thiab kev tswj cov av noo kom zoo tuaj yeem txo cov nqi hluav taws xob, txhim kho kev nplij siab, thiab txhim kho huab cua hauv tsev kom zoo. Qhov no tseem ceeb heev rau kev siv tsev kom ruaj khov, qhov twg kev siv hluav taws xob zoo thiab kev cuam tshuam rau ib puag ncig yog qhov tseem ceeb uas yuav tsum xav txog.
Hauv ib lo lus, kev tiv thaiv dej pa tawm yog qhov tseem ceeb hauv kev ntsuam xyuas kev ua tau zoo ntawm cov ntaub ntawv rwb thaiv tsev. Nws qhov cuam tshuam rau kev tswj cov av noo, kev pheej hmoo ntawm cov dej noo, thiab kev siv hluav taws xob tag nrho qhia txog qhov tseem ceeb ntawm kev xaiv cov khoom siv zoo hauv kev tsim vaj tsev. Los ntawm kev nkag siab thiab siv cov ntsiab cai ntawm kev tiv thaiv dej pa tawm, cov kws kes duab vajtse, cov neeg cog lus, thiab cov tswv tuaj yeem txiav txim siab kom tsim cov tsev ruaj khov, ua haujlwm tau zoo, thiab xis nyob dua. Thaum kev lag luam kev tsim kho txuas ntxiv mus, kev koom ua ke ntawm cov tswv yim tswj cov av noo yuav tseem yog ib qho tseem ceeb hauv kev ua tiav cov kev daws teeb meem rwb thaiv tsev zoo.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-10-2025
