xov xwm

Qhov no yog ib lo lus nug zoo heev uas kov rau ntawm qhov tseem ceeb ntawm cov khoom siv qauv tsim cuam tshuam li cas rau kev ua haujlwm.

Cias muab,nthuav iav fiber ntau daim ntaubtsis siv cov iav fiber ntau nrog kev kub siab dua. Hloov chaw, nws cov qauv "nthuav dav" tshwj xeeb ua kom nws cov thermal rwb thaiv tsev tag nrho raws li "daim ntaub." Qhov no tso cai rau nws los tiv thaiv cov khoom qis hauv qhov chaw kub siab dua thaum tiv thaiv nws tus kheej fibers los ntawm kev puas tsuaj yooj yim.

Koj tuaj yeem nkag siab nws li no: Ob leeg sib koom tib lub iav fiber ntau "cov ntaub ntawv" nrog rau qhov ntsuas kub zoo ib yam, tab sis "cov qauv" tso cai rau cov ntaub nthuav dav kom ua tau zoo dua hauv cov ntawv thov kub.

Hauv qab no, peb piav qhia meej vim li cas nws "kub tsis kam ua haujlwm" zoo dua los ntawm ntau lub ntsiab lus tseem ceeb:

1. Qhov laj thawj tseem ceeb: Cov qauv hloov pauv - "Fluffy Air Layers"

Qhov no yog qhov tseem ceeb tshaj plaws thiab tseem ceeb tshaj plaws.

• Tus qauv fiberglass daim ntaub yog nruj nreem woven los ntawm warp thiab weft yarns, tsim ib tug ntom qauv nrog tsawg kawg nkaus huab cua ntsiab lus. Thaum tshav kub kub tuaj yeem hloov tau sai heev los ntawm cov fibers lawv tus kheej (khoom thermal conduction) thiab qhov khoob ntawm fibers (thermal convection).
• Expanded fiberglass ntaubtau txais kev kho mob tshwj xeeb "expansion" tom qab weaving. Nws cov xov paj warp yog tus qauv, thaum cov xov paj weft yog nthuav cov xov paj (ib qho xov tooj xoob xoob). Qhov no ua rau suav tsis txheeb, cov huab cua tsis tu ncua hauv cov ntaub.

Cua yog ib qho zoo heev insulator. Cov hnab tshos nyob ruaj ruaj no ua tau zoo:

• Impede thermal conduction: Qhov tseem ceeb txo kev sib cuag thiab kev hloov tshav kub ntawm cov khoom siv.
• Txhaum thermal convection: Lub micro-air chambers thaiv huab cua txav, txiav tawm convective tshav kub hloov.

2. Txhim khu kev tiv thaiv kev ua kom sov (TPP) — Tiv thaiv cov khoom hauv qab

Ua tsaug rau cov txheej txheem huab cua no ua tau zoo heev, thaum kub kub qhov chaw (xws li nplaim taws lossis cov hlau molten) ntaus ib sab ntawm cov ntaub nthuav dav, qhov kub tsis tuaj yeem nkag mus rau sab nraud.

• Qhov no txhais tau hais tias cov khaub ncaws tiv thaiv hluav taws uas ua los ntawm nws tuaj yeem tiv thaiv kev hloov pauv mus rau tus neeg tua hluav taws ntawm daim tawv nqaij rau lub sijhawm ntev.
• Vuam daim pam ua los ntawm nws zoo dua tiv thaiv sparks thiab molten slag los ntawm igniting flammable cov ntaub ntawv hauv qab no.

Nws "kub tsis kam" yog qhov tseeb dua nyob rau hauv nws "thermal rwb thaiv tsev" muaj peev xwm. Kev ntsuas nws qhov kub thiab txias tsis yog tsom rau thaum nws yaj, tab sis nyob rau ntawm qhov kub ntawm sab nraud nws tuaj yeem tiv taus thaum tswj qhov kub thiab txias ntawm nws sab nraud.

3. Txhim khu kev tiv thaiv thermal - tiv thaiv nws tus kheej fibers

• Thaum zoo tib yam ntom ntom cov khoom siv siab-kub ua si, cua sov nrawm nrawm los ntawm tag nrho cov fiber ntau, ua rau muaj kev sib tw cua sov thiab nrawm mus txog ntawm cov khoom muag muag.
• Cov qauv ntawm cov ntaub nthuav dav tiv thaiv kev hloov pauv sai sai rau txhua qhov fibers. Thaum cov fibers saum npoo tuaj yeem ncav cuag qhov kub thiab txias, cov fibers tob dua tseem txias dua. Qhov cua sov tsis sib xws no ncua sijhawm cov khoom siv qhov ntsuas kub tseem ceeb, txhim kho nws cov kev tiv thaiv thermal shock. Nws zoo ib yam li ceev nrooj yoj tes hla lub taws tswm ciab uas tsis tau kub hnyiab, tab sis kev tuav lub wick ua rau raug mob tam sim ntawd.

4. Ua kom muaj cua sov ua kom pom qhov chaw

Qhov tsis sib xws, fluffy nto ntawm cov ntaub nthuav dav muaj thaj tsam ntau dua li cov ntaub npuag. Rau cov cua sov feem ntau kis tau los ntawm hluav taws xob (xws li hluav taws xob hluav taws xob hluav taws xob), qhov chaw loj dua no txhais tau tias muaj cua sov ntau dua rov qab los ntawm kev nqus, ntxiv dag zog rau rwb thaiv tsev efficiency.

Analogy rau kev nkag siab:

Xav txog ob hom phab ntsa:

1. Khoom cib ntsa (analogous rau standard fiberglass daim ntaub): tuab thiab ruaj khov, tab sis nrog nruab nrab rwb thaiv tsev.

2. Cavity phab ntsa los yog phab ntsa uas muaj npuas rwb thaiv tsev (analogous tonthuav fiberglass ntaub): Cov khoom siv phab ntsa ntawm cov khoom siv hluav taws xob tseem tsis hloov pauv, tab sis cov kab noj hniav los yog ua npuas dej (cua) ua rau kom tag nrho cov phab ntsa rwb thaiv tsev kev ua tau zoo.

Cov ntsiab lus:

Yog li ntawd, qhov xaus yog: "siab kub tsis kam" ntawm cov ntaub fiberglass nthuav dav feem ntau yog los ntawm nws qhov tshwj xeeb thermal rwb thaiv tsev vim nws cov qauv fluffy, tsis yog cov tshuaj hloov pauv hauv cov fibers lawv tus kheej. Nws ua tiav daim ntawv thov nyob rau hauv qhov kub thiab txias ib puag ncig los ntawm "kev cais tawm" cua sov, yog li tiv thaiv nws tus kheej thiab cov khoom tiv thaiv.