Cov yam ntxwv ntawm U- profile iav
1. Thermal rwb thaiv tsev
Thermal rwb thaiv tsev yog ib qho tseem ceeb ntawm kev siv hluav taws xob hauv cov khoom siv hauv tsev. Thaum U-cov iav profile yog siv rau cov ntaub thaiv phab ntsa, nws feem ntau yog ntsia rau hauv ob chav - txheej txheej, tsim kom muaj qhov sib txawv ntawm cov iav panes; qhov sib txawv ntawm huab cua no yog qhov tseem ceeb ntawm cov khoom siv thermal rwb thaiv tsev muaj peev xwm. Ntawm 20 degree, thermal conductivity ntawm huab cua yog 0.026 W / (m·K), qhov zoo tib yam iav ntshiab yog 0.76 W / (m·K)- piv ntawm 1:29. Nyob rau hauv qhov sib txawv ntawm huab cua, kev hloov pauv kub tshwm sim feem ntau los ntawm kev ua, nrog rau convection ua lub luag haujlwm me; Yog li ntawd, qhov thermal conductivity tsawg ntawm huab cua ua rau muaj kev tiv thaiv thermal ntawm U-profile iav sib dhos, muab cov rwb thaiv tsev zoo. Nyob ntawm cov khoom siv infill siv, cov cua sov hloov coefficient rau ob npaug - txheej U- cov iav profile tuaj yeem muaj li ntawm 2.8 txog 1.84 W / (m²·K).
2. Suab rwb thaiv tsev
Ntau lub nroog nyob sab hauv tsev yuav tsum muaj lub qhov rooj thiab qhov rais uas muaj suab nrov -cov khoom siv rwb thaiv tsev los tiv thaiv lub cev thiab lub hlwb kom zoo- ua tus neeg nyob hauv lub sijhawm ua haujlwm thiab lub neej txhua hnub. Raws li ib txwm muaj, U- iav profile tuaj yeem txo cov suab nrov los ntawm 30 txog 45 decibels. Cov huab cua sib txawv ntawm ob txheej iav - kaw nrog gaskets uas muaj desiccant - ua ib txheej ntawm huab cua qhuav uas tsis muaj suab conductivity, yog li tsim lub suab barrier. Thaum cov ntaub thaiv phab ntsa tsim los siv ob lub panes ntawm U- profile iav ntawm cov thicknesses sib txawv, qhov sib txawv refractive indices ntawm cov xov xwm ua rau lub suab tsis cuam tshuam ntawm qhov sib cuam tshuam ntawm cov txheej thaum lawv dhau mus; qhov no qhia txog feem ntau ntawm lub suab thiab tiv thaiv resonance, uas ua rau lub suab rwb thaiv tsev zoo dua.
3. Lub teeb kis tau tus mob thiab pom kev
U-cov iav profile muaj kev sib xyaw tshwj xeeb ntawm kev sib kis ntawm lub teeb siab thiab opacity- cov khoom zoo tsis sib xws los ntawm cov khoom siv kho kom zoo nkauj feem ntau. Dawb U- profile iav boasts lub teeb kis tus nqi ntawm 75%–85%, piv rau tus qauv ob- glazed insulating iav thiab superior rau lwm hom xim zoo nkauj iav. Cov phab ntsa tsim los ntawm cov iav no muab lub teeb kis tau zoo heev. Qhov saum npoo ntawm U- profile iav tuaj yeem muaj ntau yam kev ntxhib los mos thiab cov qauv, ua rau nws tsis pom kev thiab yog li ua kom muaj kev ywj pheej sab hauv. Lub teeb undergoes diffuse scattering kom puv chav nrog ib tug mos ci ci, tshem tawm qhov tsis xis nyob los ntawm lub hnub ncaj qha. U-cov iav profile kuj haum rau sab hauv partitions; nws tso cai rau lub hnub ci dhau los ntawm phab ntsa sab nrauv thiab tom qab ntawd los ntawm U-profile iav muab faib nws tus kheej- ua kom yooj yim rau theem nrab lossis txawm tias theem theem teeb pom kev zoo- uas ua rau lub teeb pom kev zoo sab hauv tsev.
Tsis tas li ntawd, U-cov iav profile muaj ntau yam kev xaiv uas tuaj yeem ua raws li cov kev xav tau tshwj xeeb, siv cov txheej txheem xws li refraction thiab reflection kom ua tiav cov teeb pom kev zoo uas xav tau.
4. Tus nqi -kev ua tau zoo
U-cov iav profile yog cov khoom siv iav profiled uas tsim los siv cov txheej txheem dov txuas ntxiv, cim kev hloov pauv hauv cov iav vaj tsev los ntawm cov ntawv tiaj tus mus rau cov ntu profiled; yog li ntawd, nws cov nqi tag nrho yog qhov tsawg. Kab hlau rhuav phab ntsa tsim los ntawm U-cov iav profile tuaj yeem txo qis kev noj cov hlau lossis txhuas cov ntaub ntawv. Ua tsaug rau nws lub teeb xa hluav taws xob siab, siv U-cov iav profile hauv cov tsev pej xeem- xws li cov chaw tsim khoom lag luam- tsis yog tsuas yog txiav cov nqi teeb pom kev zoo sab hauv xwb tab sis kuj txhawb nqa tib neeg ntau dua - ib puag ncig ua haujlwm.
