Ua ntej-Insulated Ducting Sheet

Kev yuav khoom ntawm cov kav dej ib txwm muaj (xws li cov ntawv hlau galvanized) dhau ntawm cov nqi tsev, thaum tus nqi ntawm cov khoom siv hluav taws xob prefabricated nyob rau hauv cov qauv compression ntawm tag nrho cov nqi installation (Tag nrho Cov Nqi Them Nqi). Cov ntaub ntawv kev lag luam qhia tau hais tias ntawm - qhov chaw teeb tsa ntawm cov kav dej ib txwm muaj feem ntau cov txheej txheem xws li "kev ntsuas - txiav - koom nrog - wrapping rwb thaiv tsev paj rwb - wrapping plhaub", thiab qhov feem pua ​​ntawm cov nqi zog hauv qhov project tag nrho cov nqi tau nce los ntawm 30% kaum xyoo dhau los mus rau ntau dua 45%. Thaum prefabricated panels muab "kev tsim qauv" thiab "cov txheej txheem rwb thaiv tsev" rau hauv ib qho. Txawm hais tias tus nqi ntawm cov vaj huam sib luag (xws li PU panels txog $ 6 ib square meter) yog siab dua me ntsis ntawm cov ntaub ntawv tshwj xeeb hlau, lawv cov kev txhim kho tuaj yeem nce 2-3 zaug, thiab vim lawv tus kheej- nyhav tsuas yog li ntawm 30% ntawm cov hlau ducts (kwv yees li 1.3{{18/}}m² rau 1.3 kg / m² tus nqi). qab nthab load-cov kabmob thiab cov qauv txhawb nqa yog qhov tseem ceeb tab sis tseem ceeb. Qhov kev hloov pauv no los ntawm "xws li cov nqi khoom siv" mus rau "xws li kev ua haujlwm thiab ntsuas cov nqi" yog lub hauv paus tsav tsheb rau kev nkag mus ntawm cov khoom no mus rau hauv nruab nrab - mus rau high-end kev ua lag luam.

Common market products are divided into three categories: PU (polyurethane), PIR (polyisocyanurate), and phenolic. From a re-examination perspective, PIR is gradually replacing PU as the technical benchmark in the high-end market. Although their densities are similar (about 40-50 kg/m³), PIR has a higher oxygen index (>33%), qhov taw tes hluav taws xob ntau dua, thiab carbonizes ntau dua li melts ntawm qhov kub thiab txias, ua rau nws cov hluav taws kub tiv thaiv ib txwm zoo tshaj PU (B1 vs B2). Qhov tseem ceeb tshaj, cov thermal conductivity ntawm PIR ua npuas ncauj tuaj yeem qis li 0.018 W / m·K, uas yog kwv yees li 20% qis dua tus nqi ntawm PU (0.022-0.024). Raws li "dual carbon" lub hom phiaj, qhov no 0.003-0.005 W/m·K qhov txawv txhais tau hais tias txo qis hauv lub tsev txias thiab cua sov. Txawm li cas los xij, kev xaiv ntawm aluminium ntawv ci rau saum npoo ntawm PIR panels (xws li 80 microns rau siv sab hauv tsev, 200 microns los yog ua ntej- cov xim hlau phaj rau sab nraum zoov siv) txiav txim siab txog lub neej kev pab cuam ntawm cov khoom. Ntau qhov dej num tau raug kev txom nyem los ntawm cov yeeb nkab sab nraum zoov raug puas tsuaj los ntawm ultraviolet rays vim yog qhov tsis raug ntawm cov khoom siv saum npoo av, uas ua rau cov kev lag luam tau txais kev saib xyuas ntau dua rau cov triad txuam ntawm "cov khoom siv saum npoo - cov khoom siv tseem ceeb - kev ua haujlwm" es tsis yog tsuas yog tsom rau kev ua haujlwm ntawm cov khoom siv tseem ceeb.