Akatswiri apanga makina opangira ma polima apamwamba kwambiri akunja a PDRC (passive daytime radiation cooling) okhala ndi mipata ya mpweya kuyambira ma nanometers kupita ku miniscels omwe angagwiritsidwe ntchito ngati choziziritsa mpweya chokhazikika pamadenga, nyumba, akasinja amadzi, magalimoto komanso ndege - chilichonse chomwe chingathe. Anagwiritsa ntchito njira yosinthira potengera kuti apangitse polima kukhala ngati thovu. Ikayatsidwa kumwamba, zokutira za polima za PDRC zimanyezimira komanso zimatenthetsa kuti kutentha kukhale kotsika kuposa zomangira wamba kapenanso malo ozungulira. mpweya.
Chifukwa cha kukwera kwa kutentha ndi kutentha kwa mafunde akusokoneza miyoyo padziko lonse lapansi, njira zoziziritsa kuziziritsa zikukhala zofunika kwambiri.Iyi ndi nkhani yofunika kwambiri, makamaka m'mayiko omwe akutukuka kumene, kumene kutentha kwa chilimwe kungakhale koopsa ndipo kumayembekezereka kuwonjezereka.Koma njira zozizira zofala, monga mpweya. zokometsera, ndizokwera mtengo, zimagwiritsa ntchito mphamvu zambiri, zimafuna kupeza magetsi okonzeka, ndipo nthawi zambiri zimafuna zoziziritsa kuziziritsa za ozone kapena kutentha kwa wowonjezera kutentha.
M'malo mwa njira zoziziritsira mphamvu zogwiritsa ntchito mphamvuzi ndi PDRC, chodabwitsa chomwe chimangozizira zokha powonetsa kuwala kwadzuwa ndi kutentha kwanyengo kumadera ozizira. ndi kutentha kwapamwamba kwambiri (Ɛ) kungapangitse thambo kuti likhale lotentha kwambiri, PDRC ndi yothandiza kwambiri.Ngati R ndi Ɛ ndizokwanira, ngakhale kutentha kwaukonde kudzachitika padzuwa.
Kupanga zojambulajambula za PDRC ndizovuta: njira zambiri zaposachedwa ndizovuta kapena zodula, ndipo sizingagwiritsidwe ntchito kapena kuyika padenga ndi nyumba zokhala ndi mawonekedwe osiyanasiyana.Pakadali pano, utoto woyera wotchipa komanso wosavuta kupaka wakhala chizindikiro cha PDRC. Komabe, zokutira zoyera nthawi zambiri zimakhala ndi inki zomwe zimayamwa kuwala kwa ultraviolet ndipo siziwonetsa bwino kutalika kwa mafunde a dzuwa, kotero kuti magwiridwe antchito ake amakhala ochepa.
Ofufuza a Columbia Engineering apanga zokutira polima zakunja za PDRC zokhala ndi mipata ya mpweya wa nanometer-to micron yomwe ingagwiritsidwe ntchito ngati choziziritsira mpweya ndipo imatha kupakidwa utoto ndi kupenta pamadenga, nyumba, akasinja amadzi, magalimoto, ngakhale zombo zamlengalenga. - chirichonse chomwe chingathe kupenta.Anagwiritsa ntchito njira yosinthira gawo lothandizira kuti apatse polima mawonekedwe amtundu wa thovu. kuwaza ndi kuwunikira kuwala kwa dzuwa.Polima imayera ndipo motero imapewa kutentha kwadzuwa, pomwe kutulutsa kwake komwe kumapangitsa kuti itenthetse bwino mlengalenga.
Nthawi yotumiza: Mar-18-2021