Kev sib tw hauv pre-kev ua lag luam yeeb nkab insulated yog qhov hnyav, thiab kev sib tw yeej nrog tus nqi qis yog qhov ntau. Thaum cov neeg yuav khoom txuag ntawm tus nqi pib, ob peb nug cov lus nug tseem ceeb: qhov twg raws nraim cov tuam txhab muab cov nqi qis txo lawv cov nqi?
Cov kav dej tau faus hauv av tau ntau xyoo; thaum lawv yuav zoo ib yam ntawm qhov chaw, qhov sib txawv tiag tiag yog zais ntawm qhov pom. Cov neeg tsim khoom muab cov nqi qis feem ntau txiav cov nqi hauv plaub qhov tseem ceeb.
Qhov thib ib yog cov ntaub thaiv npog sab nrauv. High- ntom polyethylene (HDPE) casings ua lub luag haujlwm tseem ceeb tiv thaiv kev nkag mus hauv av, thiab cov khoom ua raws cai yuav tsum tau siv cov nkauj xwb, yeeb nkab- cov ntaub ntawv raw. Tsawg- cov kav dej raug nqi, txawm li cas los xij, feem ntau suav nrog cov khoom siv rov ua dua tshiab. Qee tus txawm siv dual- txheej txheej- txheej txheej nyias ntawm cov khoom siv nkauj xwb hla ib txheej sab hauv uas muaj cov khoom siv rov ua dua tshiab. Txawm hais tias qhov sib txawv tsis tshwm sim tam sim ntawd, lub casing yuav kawg tawg thiab ua tsis tau raws sijhawm. Thaum cov dej hauv av nkag mus rau hauv, txheej rwb thaiv tsev sai sai poob nws cov txiaj ntsig; cov kav dej no feem ntau kav ntev li yim mus rau kaum xyoo, hos cov kav dej raws li tau tsim los rau lub neej ntev tshaj li peb caug xyoo.
Qhov thib ob cheeb tsam yog polyurethane npuas rwb thaiv tsev. The GB/T 29047 standard mandates a foam density of at least 60 kg/m³, a closed-cell content of at least 88%, and a thermal conductivity of no more than 0.033 W/(m·K). Tsawg- cov tuam txhab raug nqi feem ntau txo qhov ceev kom ntau tshaj 40 kg / m³, sib tov qis- zoo los ntawm - cov khoom rau hauv "dub tivthaiv" (isocyanate), lossis siv cov khoom siv rov ua dua hauv "dawb tivthaiv" (polyol). Yog li ntawd, ua npuas ncauj ua nkig thiab ntau hygroscopic; Tom qab ob peb xyoos ntawm kev ua haujlwm, nws pulverizes thiab thermal conductivity nce sharply, hnyav cuam tshuam kev ua haujlwm rwb thaiv tsev.
Qhov thib peb cheeb tsam yog cov yeeb nkab steel nws tus kheej. Qee cov chaw tsim khoom siv cov kav dej los ntawm cov mills me, siv cov phab ntsa tuab ntawm qhov qis qis ntawm kev ua siab ntev lossis txawm tias tsis yog - cov kav dej txheem. Nrog rau kev tshawb pom qhov tsis txaus ntseeg thiab cov khoom siv ntsuas hydrostatic, qhov tsis xws luag feem ntau mus nrhiav tsis pom ua ntej cov kav dej tawm hauv lub hoobkas. Cov kev pheej hmoo zais no tsis pom tam sim ntawd, tab sis ib zaug hauv kev ua haujlwm, vuam tawg lossis corrosion-induced perforation ua inevitable dhau sij hawm.
Plaub cheeb tsam yog cov txheej txheem kuaj. Cov tuam txhab lag luam muaj npe tau txais txhua pawg ntawm cov khoom lag luam rau ntau qhov kev sim- npog qhov ntom ntom, thermal conductivity, phab ntsa thickness, thiab ntau dua - ua ntej xa khoom. Tsawg- cov tuam txhab raug nqi feem ntau hla cov kauj ruam no lossis txawm tias yuav cov ntawv ceeb toom kev soj ntsuam tsis zoo kom dhau kev tshuaj xyuas. Thaum kawg, qhov muaj nyob - lossis tsis tuaj - ntawm qhov muaj peev xwm ntsuas tiag tiag txiav txim siab seb tus neeg tsim khoom puas muaj kev ntseeg siab tiag tiag hauv nws cov khoom zoo. "Cov ntaub plaub los ntawm cov yaj rov qab"- tsim cov yeeb nkab insulated incurs nqi ntawm txhua theem, los ntawm raw cov ntaub ntawv mus rau qhov zoo. Tus nqi qis qis txhais tau hais tias cov ces kaum tau raug txiav qhov chaw, thiab tus neeg yuav khoom yuav sai dua lossis tom qab them tus nqi los ntawm kev ua haujlwm siab dua thiab cov nqi kho mob. Noj, piv txwv li, ib lub kav dej kub DN500 hla ob mais: cov kav dej uas muaj tus nqi qis feem ntau muaj cov thermal conductivity ntau dua, ua rau cov nqi hluav taws xob txhua xyoo kaum tawm txhiab yuan ntau dua li qhov tsim nyog; tshaj nees nkaum-xyoo lub neej, qhov no deb tshaj qhov pib txuag ntawm ob peb lub kaum os yuan ib 'meter'. Tshaj li tus nqi, nws raug nquahu kom ua rau - qhov chaw tshuaj xyuas ntawm cov chaw tsim khoom cov khoom siv raw khoom, cov kab ntau lawm, thiab cov khoom siv kuaj; ib qho yuav tsum tau thov cov ntaub ntawv xeem rau txhua pawg thiab suav nrog cov lus cog tseg uas qhia txog qhov tsis sib xws ntawm - qhov chaw ua piv txwv rau kev ua pov thawj ywj pheej. Tsuas yog los ntawm kev tuav cov qauv nruj no tuaj yeem muaj kev thaj yeeb nyab xeeb ntawm lub siab tom qab cov kav dej tau faus.