Thaum nws los txog rau rwb thaiv tsev, nws yog ib qho tseem ceeb rau cov neeg tsim thiab cov tswv tsev tib yam nkaus kom nkag siab txog ntau yam kev ntsuas siv los ntsuas nws cov txiaj ntsig. Ntawm cov kev ntsuas no, K-tus nqi, U-tus nqi, thiab R-tus nqi yog feem ntau siv. Cov txiaj ntsig no qhia txog kev ua haujlwm thermal ntawm cov khoom siv rwb thaiv tsev, suav nrog FEF (ua npuas dej extruded polystyrene) rwb thaiv tsev. Kab lus no yuav tshawb txog kev sib raug zoo ntawm cov txiaj ntsig no thiab seb lawv cuam tshuam li cas rau FEF cov khoom siv rwb thaiv tsev.
K tus nqi: thermal conductivity coefficient
K-tus nqi, los yog thermal conductivity, yog ib qho kev ntsuas ntawm cov khoom muaj peev xwm ua kom sov. Nws chav tsev yog Watts ib 'meter'-Kelvin (W / m·K). Qhov qis dua K-tus nqi, qhov zoo dua cov rwb thaiv tsev, tab sis qhov no txhais tau tias cov khoom siv hluav taws xob tsis zoo. Rau FEF cov ntaub ntawv rwb thaiv tsev, K-tus nqi yog qhov tseem ceeb vim tias nws cuam tshuam ncaj qha rau cov khoom muaj peev xwm tiv thaiv cov cua sov. Feem ntau, FEF cov khoom siv rwb thaiv tsev muaj cov K-tus nqi qis, uas ua rau lawv muaj txiaj ntsig zoo hauv ntau yam kev siv, los ntawm cov tsev nyob mus rau cov tsev lag luam.
U-tus nqi: Tag nrho cov tshav kub hloov pauv coefficient
U-tus nqi qhia txog tag nrho cov cua sov hloov coefficient ntawm lub tsev, xws li phab ntsa, ru tsev lossis pem teb. Nws yog qhia nyob rau hauv Watts ib square meter-Kelvin (W / m²·K) thiab yuav siv sij hawm mus rau hauv tus account tsis tsuas yog lub rwb thaiv tsev cov ntaub ntawv, tab sis kuj cov teebmeem ntawm huab cua, av noo thiab lwm yam. Qhov qis dua U-tus nqi, qhov zoo dua cov rwb thaiv tsev, raws li nws txhais tau tias tsis tshua muaj cua sov los yog tau txais los ntawm lub tsev tsim. Thaum ntsuas FEF cov khoom siv rwb thaiv tsev, U-tus nqi yog qhov tseem ceeb kom nkag siab tias nws yuav ua li cas hauv kev siv tiag tiag, tshwj xeeb tshaj yog thaum ua ke nrog lwm cov khoom siv hauv tsev.
R tus nqi: tsis kam mus rau tshav kub khiav
R-tus nqi ntsuas qhov thermal tsis kam ntawm cov khoom siv, qhia tias nws tiv taus cua sov npaum li cas. Nws units yog square meter-Kelvin ib watt (m²·K / W). Qhov siab dua R-tus nqi, qhov zoo dua cov rwb thaiv tsev, lub ntsiab lus zoo dua cov khoom thaiv kev hloov hluav taws xob. FEF rwb thaiv tsev cov khoom feem ntau muaj ntau dua R-tus nqi, ua rau lawv zoo tagnrho rau kev siv hluav taws xob. R-tus nqi yog qhov tseem ceeb tshwj xeeb rau cov tswv tsev tab tom nrhiav kom txo cov nqi hluav taws xob thiab nce kev nplij siab ntawm lawv qhov chaw nyob.
Kev sib raug zoo ntawm tus nqi K, U tus nqi thiab R tus nqi hauv FEF rwb thaiv tsev
Kev nkag siab txog kev sib raug zoo ntawm K-tus nqi, U-tus nqi thiab R-tus nqi yog qhov tseem ceeb rau kev ntsuas kev ua haujlwm ntawm FEF cov khoom rwb thaiv tsev. K-tus nqi tsom rau cov khoom siv nws tus kheej, R-tus nqi ntsuas nws qhov tsis kam, thiab U-tus nqi muab cov duab dav dav ntawm kev ua tau zoo ntawm lub tsev.
Txhawm rau ua lej txheeb cov txiaj ntsig no, siv cov qauv hauv qab no:
- **R-tus nqi = 1 / K-tus nqi**: Qhov kev sib npaug no hais tias raws li K-tus nqi txo qis (qhia kom zoo dua thermal conductivity), R-tus nqi nce, lub ntsiab lus txhim kho rwb thaiv tsev.
- ** U tus nqi = 1 / (R tus nqi + lwm yam resistors)**: Cov qauv no qhia tau hais tias tus nqi U tsis tsuas yog cuam tshuam los ntawm R tus nqi ntawm cov txheej txheem rwb thaiv tsev, tab sis kuj los ntawm lwm yam xws li huab cua sib txawv thiab thermal txuas hniav.
Rau cov khoom siv rwb thaiv tsev FEF, qhov qis K-tus nqi ua rau ntau dua R-tus nqi, uas nyob rau hauv lem pab ua kom tiav U-tus nqi qis thaum muab tso rau hauv lub tsev sib dhos. Qhov kev sib koom ua ke no ua rau FEF rwb thaiv tsev yog qhov kev xaiv nrov rau cov kws tsim vaj tsev thiab cov neeg tsim khoom nrhiav kev tsim hluav taws xob.
Hauv cov ntsiab lus, K-tus nqi, U-tus nqi thiab R-tus nqi yog cov kev sib cuam tshuam uas muab kev nkag siab zoo rau kev ua haujlwm thermal ntawm FEF cov khoom rwb thaiv tsev. Los ntawm kev nkag siab txog cov kev sib raug zoo no, cov neeg tsim khoom thiab cov tswv tsev tuaj yeem txiav txim siab paub txog cov ntaub ntawv rwb thaiv tsev, thaum kawg tsim kom muaj zog ntau dua thiab xis nyob. Raws li kev siv hluav taws xob txuas ntxiv los ua qhov tseem ceeb tshaj plaws hauv kev tsim kho kev lag luam, qhov tseem ceeb ntawm cov txiaj ntsig no tsuas yog nce ntxiv, yog li lawv yuav tsum tau txiav txim siab thaum xaiv cov txheej txheem rwb thaiv tsev.
Post lub sij hawm: May-17-2025
