Ib pawg kws tshawb fawb ntawm Pennsylvania State University tau tshawb xyuas qhov ua tau zoo ntawm ib txheej txheej qhov rais uas tuaj yeem txhim kho kev txuag hluav taws xob thaum lub caij ntuj no.Credit: iStock/@Svetl.Txhua txoj cai.
UNIVERSITY PARK, Pennsylvania - Ob chav glazed qhov rais sandwiched nrog ib txheej ntawm insulating huab cua tuaj yeem muab kev siv zog ntau dua li ib lub qhov rais ib leeg, tab sis hloov cov qhov rais uas twb muaj lawm ib lub qhov rais tuaj yeem raug nqi lossis kev nyuaj.Ib qho kev lag luam ntau dua, tab sis kev xaiv tsis zoo yog los npog cov qhov rais ib leeg nrog cov yeeb yaj kiab zoo nkauj, uas absorbs qee lub hnub tshav kub hauv lub caij ntuj no yam tsis muaj kev cuam tshuam qhov pom ntawm iav.Txhawm rau txhim kho cov txheej txheem txheej txheem, Pennsylvania cov kws tshawb fawb hais tias nanotechnology tuaj yeem pab coj cov thermal kev ua tau zoo mus txog qhov sib piv nrog ob-glazed windows nyob rau lub caij ntuj no.
Ib pab neeg los ntawm Pennsylvania Department of Architectural Engineering tau tshawb xyuas cov khoom txuag hluav taws xob ntawm cov txheej txheem uas muaj cov khoom siv nanoscale uas txo cov cua sov thiab nqus cua kom zoo dua.Lawv kuj tau ua tiav thawj qhov kev ntsuam xyuas ntawm lub zog ua haujlwm ntawm cov khoom siv hauv tsev.Cov kws tshawb fawb tau luam tawm lawv qhov kev tshawb pom hauv Kev Hloov Hloov Hluav Taws Xob thiab Kev Tswj Xyuas.
Raws li Julian Wang, tus kws tshaj lij ntawm architectural engineering, ze-infrared lub teeb - ib feem ntawm lub hnub ci uas tib neeg tsis tuaj yeem pom tab sis tuaj yeem hnov ​​​​suab cua sov - tuaj yeem qhib qhov tshwj xeeb photothermal nyhuv ntawm qee cov hlau nanoparticles, ua kom sov ntws sab hauv.ntawm qhov rais.
"Peb txaus siab nkag siab tias cov teebmeem no tuaj yeem txhim kho lub zog ntawm cov tsev, tshwj xeeb tshaj yog nyob rau lub caij ntuj no," said Wang, uas kuj ua haujlwm ntawm lub koom haum ntawm Architecture thiab Materials ntawm Pennsylvania School of Art thiab Architecture.
Pab neeg ua ntej tau tsim ib qho qauv los kwv yees ntau npaum li cas tshav kub los ntawm lub hnub ci yuav cuam tshuam, nqus, los yog kis tau los ntawm qhov rais coated nrog hlau nanoparticles.Lawv xaiv lub photothermal compound vim nws muaj peev xwm nqus tau ze-infrared hnub ci thaum tseem muab cov teeb pom kev txaus.Tus qauv kwv yees hais tias cov txheej no cuam tshuam tsawg dua nyob ze ntawm lub teeb infrared lossis cua sov thiab absorbs ntau dua los ntawm lub qhov rais dua li lwm hom txheej txheej.
Cov kws tshawb fawb tau sim ib lub qhov rais iav qhov rais coated nrog nanoparticles nyob rau hauv simulated tshav ntuj nyob rau hauv ib tug lab, paub meej tias simulation kwv yees.Qhov kub ntawm ib sab ntawm lub qhov rais nanoparticle-coated tau nce ntxiv, qhia tias cov txheej txheem tuaj yeem nqus tau cov cua sov los ntawm lub hnub ci los ntawm sab hauv kom them nyiaj rau cov cua sov sab hauv los ntawm ib lub qhov rais.
Cov kws tshawb fawb tom qab ntawd pub lawv cov ntaub ntawv mus rau hauv cov kev sim loj loj los soj ntsuam lub tsev lub zog txuag nyob rau hauv ntau yam kev nyab xeeb.Piv nrog rau cov txheej txheem qis qis ntawm cov khoom lag luam muaj ib lub qhov rais, photothermal coatings nqus feem ntau ntawm lub teeb nyob rau hauv ze-infrared spectrum, thaum ib txwm coated qhov rais qhia nws sab nraud.Qhov ze-infrared nqus no ua rau kwv yees li 12 mus rau 20 feem pua ​​​​tsawg tshav kub dua li lwm cov txheej, thiab lub tsev tag nrho lub zog txuag lub peev xwm ncav cuag li 20 feem pua ​​​​piv rau cov tsev tsis muaj coated ntawm ib lub qhov rais.
Txawm li cas los xij, Wang tau hais tias thermal conductivity zoo dua, qhov zoo dua rau lub caij ntuj no, dhau los ua qhov tsis zoo hauv lub caij sov.Txhawm rau suav rau cov kev hloov pauv raws caij nyoog, cov kws tshawb fawb kuj tau koom nrog cov canopies rau hauv lawv cov qauv tsim.Qhov kev tsim no thaiv cov tshav ntuj ncaj qha uas ua kom sov rau ib puag ncig thaum lub caij ntuj sov, tshem tawm cov cua sov tsis zoo thiab cov nqi cua txias.Pab neeg no tseem ua haujlwm rau lwm txoj hauv kev, suav nrog lub qhov rais dynamic kom tau raws li lub caij nyoog cua sov thiab cua txias xav tau.
"Raws li txoj kev tshawb no qhia, nyob rau theem ntawm txoj kev tshawb no, peb tseem tuaj yeem txhim kho qhov kev ua haujlwm thermal tag nrho ntawm ib lub qhov rais glazed kom zoo ib yam li ob-glazed windows nyob rau lub caij ntuj no," Wang hais."Cov txiaj ntsig no tawm tsam peb cov kev daws teeb meem ib txwm siv ntawm kev siv ntau cov khaubncaws sab nraud povtseg lossis rwb thaiv tsev kom rov qab kho cov qhov rais ib-chamber kom txuag tau lub zog."
Sez Atamtürktur Russcher, Xib Fwb Harry thiab Arlene Schell thiab Tus Thawj Coj ntawm Kev Tsim Kho Engineering tau hais tias "Vim qhov kev xav tau loj hauv cov khoom lag luam rau cov khoom siv hluav taws xob nrog rau ib puag ncig, nws yog ib qho tseem ceeb uas peb yuav tsum ua kom peb cov kev paub los tsim lub zog txuag hluav taws xob,"“Dr.Wang thiab nws pab neeg tab tom ua qhov kev tshawb fawb yooj yim. "
Lwm tus pab txhawb rau txoj haujlwm no suav nrog Enhe Zhang, tus kawm tiav hauv kev tsim vaj tsev;Qiuhua Duan, Assistant Professor of Civil Engineering ntawm University of Alabama, tau txais nws PhD hauv Architectural Engineering los ntawm Pennsylvania State University thaum Lub Kaum Ob Hlis 2021;Yuan Zhao, tus kws tshawb fawb ntawm Advanced NanoTherapies Inc., uas tau pab txhawb rau txoj haujlwm no ua tus kws tshawb fawb PhD ntawm Pennsylvania State University, Yangxiao Feng, PhD cov tub ntxhais kawm hauv kev tsim vaj tsev.Lub National Science Foundation thiab USDA Natural Resources Conservation Service tau txhawb nqa txoj haujlwm no.
Cov ntaub thaiv qhov rais (ze li molecules) tau pom tias yuav txhim khu kev hloov ntawm tshav kub los ntawm sab nraum zoov tshav ntuj (txiv kab ntxwv xub) mus rau sab hauv ntawm lub tsev thaum tseem muab lub teeb txaus kis tau tus mob (daj xub).Source: Duab los ntawm Julian Wang.Txhua txoj cai.