PRE-INSULated DUCT vs GI DUCTWOK
Ua ntej- insulated duct (feem ntau PIR ua npuas ncauj core nrog aluminium faces) thiab GI (Galvanized Iron) duct sawv cev rau ob txoj hauv kev rau HVAC huab cua faib, sib txawv hauv kev tsim, kev ua tau zoo, thiab tsim nyog rau qhov project xav tau. Hauv qab no yog cov ntsiab lus sib piv, tsom rau cov ntsuas tseem ceeb rau kev txiav txim siab ua tau zoo- ua:
Ua ntej-Insulated Yeeb Nkab: An integrated sandwich structure of rigid closed-cell PIR foam (thermal insulation core) bonded to protective facings (aluminum sheet/foil, black aluminum foil, etc.), factory-manufactured for direct installation with built-in insulation.
GI cev: Cov khoom siv hlau niaj hnub ua los ntawm cov ntawv hlau galvanized, yuav tsum tau rau ntawm - qhov chaw ntxiv ntawm cov ntaub ntawv rwb thaiv tsev cais (fiberglass, ntxhia wool) kom tau raws li cov kev xav tau thermal efficiency.
| Metric | 20mm PIR Ua Ntej-Insulated Duct (nrog 0.08mm Alu. Foil, ) |
0.5mm GI Duct + 30mm Roj Hmab Yas (40-90kg / m3) |
| Kev nyab xeeb hluav taws | Ua raws (Class 0 / BS 476, AS 1530.3). Tus kheej- tua PIR tub ntxhais, cov pa luam yeeb tsawg, tsis yog -cov ntawv ci alu. | GI tsis yog-combustible; roj hmab yas hluav taws-retardant tab sis yuav tsum tau txheej kom tau raws li cov cai nruj. |
| Thermal rwb thaiv tsev | Zoo heev. λ=0.022 W/m·K, tsis muaj thermal bridging. 20mm integrated qauv kom ntseeg tau tias zoo ib yam rwb thaiv tsev. |
Ncaj ncees. λ=0.035 W/m·K, thermal bridging ntawm GI pob qij txha. 30mm rwb thaiv tsev offset los ntawm hlau conductivity. |
| Hygiene & Cua Zoo | Superior. Tsis yog - ntxeem tau alu ntawv ci, du sab hauv nto, ya raws -resistant PIR. Ua tau raws li tus qauv huv chav tsev / tsev kho mob. |
pluag. Porous rubber yas ntxiab plua plav / pwm; GI- rwb thaiv tsev gap yug cov kab mob. |
| Lub teeb | 1.4-1.5 kg / m² Ultra- lub teeb, txo cov qauv thauj khoom; zoo tagnrho rau retrofits/tua ntoo -framed tsev. |
5.1-6.3 kg/m². Hnyav GI puag + bulk rwb thaiv tsev; xav tau kev txhawb zog ntxiv. |
| Zog Efficiency | Zoo heev. 20-30% qis HVAC zog noj. Minimizes tshav kub nce / poob hauv cov cua txias. |
Tsawg. 20-30% siab zog poob vim tsis zoo rwb thaiv tsev thiab thermal bridging. |
| Kev tsim kho yooj yim | Yooj yim. Factory-prefabricated nplaig-thiab-groove pob qij txha. Tsis muaj cov txheej txheem rwb thaiv tsev cais; 40-60% tsawg lub sijhawm ua haujlwm. |
nyuaj. Ob - kauj ruam ntawm - txheej txheem ntawm qhov chaw: GI duct fabrication + roj hmab yas qhwv. Kev ua haujlwm- hnyav, ua rau muaj qhov khoob. |
| Ua haujlwm ntsiag to | Zoo. PIR core absorbs 10-15 dB airflow suab nrov; alu foil dampens kev co. |
Ncaj ncees. Roj hmab yas muab cov suab nrov txo, tab sis GI kev co thiab rwb thaiv tsev qhov khoob txo qhov ua tau zoo. |
| Kev txuag chaw | Zoo heev. 20mm tag nrho thickness (tag nrho-hauv-ib). Fits nruj ceilings / retrofit kab noj hniav. |
pluag. 30.5mm tag nrho thickness (0.5mm GI + 30mm rwb thaiv tsev). Bulky, yuav tsum tau loj dua qhov chaw installation. |
| Environmental Friendliness | Sib npaug. CFC/HCFC-PIR dawb, rov ua dua alu foil. 20–30-xyoo lub neej; net carbon zoo hauv 1-3 xyoos. |
Tsawg. Roj hmab yas uas tsis yog -recyclable; 10-15 xyoo lifespan. Kev hloov tsis tu ncua ua kom cov khoom pov tseg; siab zog emissions. |
| Tsawg Leakage | Superior. Tsawg dua lossis sib npaug li 2% huab cua to (EN 1507, AS / NZS 3660.1). Airtight Hoobkas pob qij txha + alu foil vapor barrier. |
pluag. 5-10% huab cua to. Ntawm -site sealing qhov khoob; cais vapor barrier yuav tsum tau. |
