Kaw-cell polyurethane ua npuas ncauj (CCPF) yog tsim los ntawm cov hlwb me me nrog cov phab ntsa uas tsis muaj zog, uas zoo li cov pob balloons sib sib zog nqus ua ke. Cov hlwb yog inflated nrog cov roj tshwj xeeb uas tau xaiv los ua kom lub rwb thaiv tsev tus nqi ntawm cov npuas dej kom siab li sai tau. Zoo li cov log tsheb inflated uas tuav lub tsheb, cov pa roj npuas npuas, thaum qhuav, tsim cov khoom muaj zog txaus taug kev yam tsis muaj kev cuam tshuam loj. Phab ntsa-racking lub zog tuaj yeem txhim kho thaum CCPF siv, thiab nws lub zog ua rau nws zoo dua rau kev siv vov tsev. Lub siab thermal tsis kam ntawm cov pa muab CCPF tus nqi R-nqi kwv yees li R-7 rau R-8 ib nti, raws li US Department of Energy (DOE), uas yog qhov zoo dua qhov nws qhib- cell lwm txoj. Nws kuj ua raws li vapor barrier, ua rau nws cov khoom ntawm kev xaiv yog tias lub rwb thaiv tsev zoo li yuav raug rau cov dej noo ntau. Nws qhov ceev yog feem ntau 2 lb / ft3(32 kg ib cubic meter [kg/m3]).
Sij hawm dhau mus, R-tus nqi ntawm CCPF tuaj yeem poob qis vim qee cov pa hluav taws xob tsawg khiav tawm thiab hloov nrog huab cua zoo tib yam, txheej txheem hu ua thermal drift. Kev tshawb fawb ua los ntawm DOE tau qhia tias feem ntau cov thermal drift tshwm sim hauv thawj ob xyoos tom qab siv cov khoom siv rwb thaiv tsev, tab sis tom qab ntawd cov npuas dej tseem tsis hloov pauv tshwj tsis yog nws puas.
Ua Npuas Ncauj Yog Hluav Taws Xob
Semi-permeable rigid foam rwb thaiv tsev thiab tshuaj tsuag ua npuas ncauj rwb thaiv tsev (ua npuas ncauj yas) nyob rau sab hauv ntawm lub hauv paus hauv paus phab ntsa feem ntau pom thaum lub sijhawm tshuaj xyuas ntawm lub hauv paus hauv qab daus ntawm lub tsev. Kev siv nws tuaj yeem yog lub tswv yim zoo rau cov dej noo-resistant tiav hauv qab daus. Txawm li cas los xij, cov yam ntxwv ntawm cov hluav taws kub thiab cov pa taws ntawm hom rwb thaiv tsev no yuav tsum tau them nrog cov txheej txheem hluav taws kub, xws li gypsum wallboard (drywall).
Qee zaum qhov kev xav tau no ua haujlwm zoo thaum lub hauv qab daus tiav lawm. Qhov yuav tsum tau muaj cov tshuaj tsuag npuas rwb thaiv tsev kom tiv thaiv los ntawm thermal barrier muaj nyob rau hauv International Residential Code (IRC) 2015 Tshooj R316. Feem ntau cov tshuaj tsuag polyurethane ua npuas ncauj rwb thaiv tsev, cov npuas dej yuav tsum tau muab cais tawm ntawm qhov chaw nyob sab hauv los ntawm kev pom zoo thermal barrier yam tsawg 1/2-inch gypsum wallboard (drywall), 23/32- nti ntoo vaj huam sib luag, lossis cov khoom siv kuaj kom ua tau raws li cov qauv siv tau los ntawm NFPA. Muaj qee qhov kev zam rau qhov yuav tsum tau ua, suav nrog cov nplaim taws sib kis ntsuas ntsuas.
Yog hais tias lub hauv paus yuav tsuas yog insulated thiab tsis tiav, ib tug hluav taws kub-rated ua npuas ncauj vaj huam sib luag los yog zoo li hluav taws-rated npog yuav tsum tau siv. Vim hais tias cov qib saum toj no ntawm phab ntsa hauv qab daus tuaj yeem qhuav rau sab nraud, hluav taws kub rwb thaiv tsev ntawm cov chaw no yuav yog hom impermeable. Piv txwv li, nws tuaj yeem muaj cov ntawv ci tig. Tab sis cov txheej txheem insulating uas txwv tsis pub ziab ntawm cov qib qis ntawm cov phab ntsa ntawm lub hauv paus mus rau sab hauv yuav tsum zam.
Hauv attics, tsis tas yuav tsum muaj thermal barrier thaum muaj ntau yam xwm txheej. Cov xwm txheej no tau teev nyob rau hauv IRC Code 2015 Tshooj R316, thiab lawv suav nrog kev nkag mus rau hauv qab nthab, qhov chaw hauv qab yog nkag mus rau kev saib xyuas nkaus xwb thiab thaum xav tau kev kho, thiab cov rwb thaiv tsev ua npuas dej tau raug sim los yog ua npuas ncauj rwb thaiv tsev tiv thaiv ignition. siv ib daim ntawv teev cov khoom thaiv.
Cov pob khoom thiab cov ntim ntawm cov tshuaj tsuag ua npuas ncauj rwb thaiv tsev (lossis ua npuas ncauj yas) yuav tsum tau sau npe thiab txheeb xyuas yog tias lawv raug xa mus rau lub tsev.