Hauv kev tshawb fawb niaj hnub txuag hluav taws xob kev txuag thiab ua tau zoo rwb thaiv tsev cov ntaub ntawv, Airgel tau nyiam cov kev ua haujlwm dav dav. Raws li ib qho ntawm cov khoom siv ruaj khov nrog qhov qis tshaj thermal conductivity tau paub kom deb li deb, kev txuag hluav taws xob, kev txuag lub zog txias thiab cov teb. Txhawm rau kom ua si zoo dua nws lub zog-txuag zoo, nws yog ib qho tseem ceeb rau kev kawm cov kev sib raug zoo ntawm nws cov rwb thaiv tsev thiab cov txiaj ntsig rulfulion. Kab lus no yuav qhia cov khoom thermal ntawm airgel rwb thaiv tsev thiab tshuaj xyuas cov kev hloov pauv ntawm cov khoom siv rwb thaiv tsev thiab cua sov siv rau cov khoom tsim tsim qauv thiab engineering cov ntawv thov.
Zoo siab
2. Theoretical lub hauv paus: txhais ntawm cov ntsiab lus tseem ceeb
3. Kev sib raug zoo ntawm cov tuab thiab thermal rwb thaiv tsev
4. Cov nyhuv ntawm thermal conductivity ntawm thermal rwb thaiv tsev nyhuv
5. Synergistic nyhuv ntawm thickness thiab thermal conductivity
6. Lwm yam cuam tshuam nrog cov kev siv
Airgel rwb thaiv tsev Panels tau nyiam ntau tus neeg nyob rau hauv cov kev rwb thaiv tsev niaj hnub vim lawv cov khoom siv tshwj xeeb. Lawv lub teeb yuag, Nanoscale Pore kev teeb tsa muab Aerogels tsis tshua muaj cua sov condal, ua rau lawv ib qho zoo tshaj plaws paub cov ntaub ntawv rwb thaiv tsev. No ultra-tsawg thermal conductivity tsis tsuas yog txo qis kev hloov cua sov, tab sis kuj tseem ua kom txuag hluav taws xob, yog li cov cuab yeej rwb thaiv tsev, thiab cov khoom siv rwb thaiv tsev, thiab cov khoom siv rwb thaiv tsev, thiab cov khoom siv rwb thaiv tsev, thiab cov cuab yeej siv hluav taws xob. Nrog rau kev txhim kho kom txuas ntxiv ntawm kev txuag hluav taws xob thiab emission txo cov kev xav tau, yuav ua li cas ntawm cov teeb meem airgel tau dhau los ua ib qho ntawm cov teeb meem core engineering.
Tshwj xeeb, cov thermal rwb thaiv tsev cov txiaj ntsig ntawm aerogels yog cuam tshuam los ntawm cov khoom siv thermness thiab thermal conductivity txiav txim siab ua haujlwm ncaj qha ntawm kev kub ntxhov. Ib txoj kev nkag siab tob ntawm cov kev sib raug zoo ntawm rwb thaiv tsev tuab, thermal rwb thaiv tsev cov txiaj ntsig tseem ceeb, thiab kev txhim kho hluav taws xob.
2. Theoretical lub hauv paus: txhais ntawm cov ntsiab lus tseem ceeb
Rwb Thaiv Tsev Thickness (Δ)
Rwb thaiv tsev tuab yog hais txog lub cev tuab ntawm lub airgel rwb thaiv tsev board, feem ntau qhia hauv millimeters (hli). Tus qauv ua hauj lwm yog tias kev nce hauv thickness tuaj yeem ua kom zoo ntawm cov khoom cua sov, thiab txhim kho lub rhaub dej sov rwb thaiv tsev.
Thermal conductivity (λ)
Thermal conductivity is a physical quantity that describes the ability of a material to conduct heat, and the unit is watt per meter per Kelvin (W\/(m·K)). Cov ntaub ntawv Airgel muaj tsawg heev thermal conductivity, feem ntau xws li los ntawm {0}}}}}}}}. Tus me dua cov thermal conductivity, lub zog muaj peev xwm muaj peev xwm ntawm cov khoom siv kom tabkaum cua sov thiab qhov zoo dua cov thermal rwb thaiv tsev ua haujlwm.
Thermal rwb thaiv tsev cov nyhuv (r tus nqi lossis thermal kuj)
Lub thermal rwb thaiv tsev nyhuv yog feem ntau ntsuas los ntawm cov thermal tsis kam, uas yog txhais tau tias yog cov thermal conductivity, uas yog, r {{0} δ. Tus nqi r sawv cev rau lub peev xwm ntawm cov khoom siv kom tiv thaiv tshav kub kub ntws hloov. Qhov loj dua tus nqi r tus nqi, qhov zoo dua cov thermal rwb thaiv tsev ua haujlwm ntawm cov khoom. Hauv kev siv cov engineering, rationalally tsim cov tuab ntawm Airgel cov ntawv thiab xaiv cov khoom siv los txhim kho lub hom phiaj hluav taws xob.
3. Kev sib raug zoo ntawm cov tuab thiab thermal rwb thaiv tsev
Lub thickness ntawm lub tshav dav hlau airgel yog qhov sib txheeb zoo nrog nws cov thermal rwb thaiv tsev muaj txiaj ntsig. Raws li cov ntsiab lus tseem ceeb ntawm thermal kuj, cov thermal resistance r tus nqi yog proportness Δ, uas yog, r {{0} δ \/ λCov. Hauv kev tshawb xav, raws li cov tuab ua kom tuab, lub thermal kuj nce linearly, thiab cov thermal rwb thaiv tsev kev ua tau zoo heev. Txawm li cas los xij, hauv cov ntawv thov engineering, txoj kev sib raug zoo no qhia qee yam tsis zoo. Tshwj xeeb, tom qab lub thickness ntawm lub tshav dav hlau airgel nce mus rau qhov kev txhim kho thermal, thiab tom qab kev nce qib siab, tom qab kev nce qib ntxiv, thiab tus nqi yuav txo qis.
Cov ntaub ntawv sim kuj txhawb qhov kev xav no. Noj cov airgel board nrog lub thermal conductivity ntawm {m \/ w.}}}}}}}}. Theoretically, kev ua yeeb yam yog kev txhim kho tiag tiag hauv thermal rwb thaiv tsev muaj txiaj ntsig yog feem ntau cuam tshuam los ntawm cov khoom sib koom tes, thiab tsis ua tiav rau ntawm sab zoo tagnrho.
Ib qho ntxiv, airgel cams kuj tau txwv los ntawm kev txwv chaw thiab nqi yam ntxwv hauv kev siv cov ntawv thov. Lub thickness ntawm lub vaj tsev phab ntsa lossis khoom siv rwb thaiv tsev txheej yog txwv, thiab lub tshav dav hlau tsis tuaj yeem ua kom tuab dua; Nyob rau tib lub sijhawm, tus nqi ntawm cov khoom siv Airgel yog qhov siab, thiab ua tuab ntau heev yuav ua rau rov qab los ntawm kev nqis peev. Yog li ntawd, nws yog qhov kev txiav txim siab tseem ceeb hauv engineering los xaiv cov tuab ntawm lub airgel board thiab coj mus rau hauv tus account ob qho tib si thermal rwb thaiv tsev cov txiaj ntsig thiab kev lag luam.
4. Cov nyhuv ntawm thermal conductivity ntawm thermal rwb thaiv tsev nyhuv
Thermal conductivity (λ) yog lub cev tseem ceeb parameter ntsuas ntsuas cua sov hloov lub peev xwm ntawm cov khoom siv cua. Raws li ib qho cuab yeej siv tau los ntawm cov khoom, nws txiav txim siab ncaj qha rau cov cua thermal rwb thaiv tsev hauv qab chav tuab. Qhov qis dua cov thermal conductivity, qhov tsawg dua cov cua sov hla dhau ntawm cov khoom siv ib lub sijhawm, thiab lub zog ua kom muaj peev xwm ntawm cov khoom siv. Yog li, tus nqi ntawm λ muaj kev txiav txim siab cuam tshuam rau ntawm tag nrho cov thermal rwb thaiv tsev nyhuv ntawm lub airgel board.
Noj ob txoj kev coj ua thermal raws li ib qho piv txwv: thaum lub thickness ntawm lub tshav dav hlau}}}}}}}}}}}}}}. 0 Pua pua}. Thiab yog tias {{{5 5}}. 030 w \/ (map k \/ w, w, w, w, thiab cov thermal ragation muaj peev xwm poob los ntawm kwv yees li 33%. Nws tuaj yeem pom tau hais tias txawm tias cov thermal conductivity tsuas yog txawv me ntsis xwb, nws yuav muaj kev cuam tshuam me ntsis ntawm cov thermal rwb thaiv tsev ua haujlwm hauv kev siv.
Txhawm rau txhawm rau txhim kho cov thermal rwb thaiv tsev cov txiaj ntsig ntawm cov kev tshawb fawb tseem ceeb yog kom txo nws cov thermal conductivity los ntawm kev ua kom zoo dua cov nanostructiving Piv txwv li, los ntawm kev tswj hwm porosity, optimizing roj-khoom interface qauv, thiab txhim kho cov khoom siv hydrophobicity thiab roj cua sov ua kom zoo txo, ua kom txo cov nqi lambda. Cov microstructural no tau dhau los ua cov kev kawm txuj ci tseem ceeb rau kev txhim kho lawv cov phiaj xwm kev txuag hluav taws xob.
5. Synergistic nyhuv ntawm thickness thiab thermal conductivity
Hauv cov thermal rwb thaiv tsev tsim ntawm Airgel cov laug cam, tuab (δ) thiab thermal conductivity (tab sis ua haujlwm txiav txim siab zaum kawg thermal rwb thaiv tsev ua haujlwm (r tus nqi). Muaj ib lub synergistic loj ntawm ob, uas yog, tsawg thermal conductivity cov ntaub ntawv tuaj yeem ua tiav tib yam lossis tseem zoo dua thermal rwb thaiv tsev muaj txiaj ntsig ntawm ib qho me me tuab.
For example, when the target thermal resistance is R ≈ {{0}}.33 m²·K\/W, if an aerogel board with a thermal conductivity of 0.025 W\/(m·K) is used, the required thickness is about 8.3mm; Yog tias cov khoom siv nrog qis dua thermal conductivity, xws li}}}. 015}}. 015}}}}. This comparison clearly shows that low λ value materials have natural advantages in saving space and reducing weight, and are particularly suitable for scenarios with significant high performance and lightweight requirements, such as green buildings, rail transportation, and aerospace.
Yog li ntawd, hauv kev xaiv cov engineering, nws raug nquahu kom ua kom tau zoo raws li cov phiaj xwm hauv qab no: Ua ntej, txiav txim siab lub hom phiaj rwb thaiv lwm cov phiaj xwm ntawm txoj haujlwm; Tom qab ntawd muab kev ua ntej rau cov khoom siv airgel nrog qis dua thermal conductivity kom ua tiav ntau dua thermal tsis kam; Thaum kawg, kho thiab kho cov tuab raws li pob nyiaj siv, chaw thiab kev tsim kho kom ua tiav qhov kev ua tau zoo, tus nqi thiab cov ntaub ntawv thov.
6. Lwm yam cuam tshuam nrog cov kev siv
Txawm hais tias cov pa roj cargel muaj cov txiaj ntsig zoo ua haujlwm hauv kev tshawb fawb, lawv cov thermal rwb thaiv tsev cov txiaj ntsig tau txiav txim siab hauv encessering tsim thiab kev tsim kho.
1. Tus yam ntxwv ntawm ib puag ncig
Lub thermal conductivity (λ) ntawm airgel tsis tas li nyob rau hauv ib puag ncig sib txawv. Tshwj xeeb, kev hloov pauv hauv qhov kub thiab cov av noo muaj qhov cuam tshuam tseem ceeb rau nws qhov kev ua tau zoo. Cov kev tshawb fawb tau pom tias cov ntaub ntawv airgel muaj qee qhov kev hygroscopicity. Thaum cov av noo ambient nce los yog cov khoom siv tau rau ib puag ncig lim tau ntev, nws tus nqi micrroporous yuav nqus dej noo, yog li tsis muaj zog rau cov thermal rwb thaiv tsev nyhuv. Yog li ntawd, thaum siv airgel panels nyob rau hauv ib puag ncig noo lossis qhib dej lim txheej lossis txhim kho hydrophobic airgel yuav tsum tau siv los xyuas kom meej nws qhov ua tau zoo.
2. Cawv ntawm cov txheej txheem installation
Txawm hais tias cov pa hluav taws muaj qhov ua tau zoo heev, yog tias kev tsim kho ntawm cov pob zeb ua ke, yog li qee qhov tsis muaj zog ntawm cov khoom siv hluav taws xob zoo ntawm cov khoom siv nws tus kheej. Yog li no, cov qauv qhia tsim nyog, cov ntaub ntawv caulking thiab npog cov qauv yuav tsum tau siv nyob rau hauv kom ntseeg tau tias qhov ntsuas hluav taws xob kub npau suav thiab ua kom tiav cov khoom ua haujlwm.
3. Kev txheeb xyuas kev lag luam
Kev tsim tau tus nqi ntawm cov khoom siv airgel siab, tshwj xeeb tshaj yog rau cov khoom lag luam nrog cov khoom kim heev rau cov ntaub ntawv rwb thaiv tsev. Yog li no, kev txiav txim siab hauv cov phiaj xwm, kev ntsuam xyuas yuav tsum tau ua los ntawm kev ntsuas lub neej tag nrho, cov nqi kho mob, lub neej kev pabcuam, los txiav txim siab nws cov txiaj ntsig kev khwv nyiaj txiag. Rau cov phiaj xwm nrog kev ua kom muaj zog muaj kev txuag nyiaj siab, qhov chaw yuav tsum muaj cov nqi nruj, tab sis ntev lub zog txuag tau ntev dua tuaj yeem ua tau zoo dua.
Lub thermal rwb thaiv tsev kev ua tiav ntawm Airgel rwb thaiv tsev board yog txiav txim siab los ntawm nws cov tuab (δ) thiab thermal conductivity (uas cuam tshuam rau tag nrho cov mis. Txawm hais tias nce lub thickness tuaj yeem txhim kho cov thermal rwb thaiv tsev cov nyhuv, muaj chaw thiab cov nqi txwv; Cov ntaub ntawv tsawg-λ tuaj yeem ua tiav kev ua tau zoo ntawm cov ntawv thov me me, yog li hauv cov ntawv thov kev ua haujlwm, yog li hauv kev ua haujlwm tsim nyog yuav tsum tau ua kom muaj kev sib npaug ntawm kev ua tau zoo thiab kev lag luam.
Nyob rau yav tom ntej, kev tshawb fawb txog cov khoom siv airgel yuav tsom rau kev txo cov thermal conductivity, xws li txhim kho kev ua tau zoo los ntawm kev tswj hwm nanostructures thiab txhim kho hydrophobicity. Nyob rau tib lub sijhawm, Composite qauv qauv tsim yuav kuj ua kev txhim kho kom txo qis cov kev xav tau thiab txhim kho kev ua haujlwm ntawm cov txheej txheem tag nrho. Nrog rau qhov kev xav tau loj hlob rau lub zog ntsuab, airgel cams yuav tsum tau siv ntau dua siv hauv kev tsim kho, kev lag luam, av.