Onjiniyela basungule i-PDRC yangaphandle esebenza kahle kakhulu (i-passive daytime radiation cooling) enezikhala zomoya ezisukela kuma-nanometers kuye kuma-miniscel angasetshenziswa njengesibandisi somoya esizenzakalelayo ophahleni, izakhiwo, amathangi amanzi, izimoto ngisho nemikhumbi-mkhathi - noma yini engakwazi zipendwe.Basebenzise indlela yokuguqula yesigaba esisekelwe kwisixazululo ukuze banikeze i-polymer ukwakheka okufana negwebu elinezimbobo.Lapho ivezwe esibhakabhakeni, ucwecwe olunezimbobo lwe-polymer PDRC lubonisa ukukhanya kwelanga futhi lushise ukuze kufinyelele amazinga okushisa aphansi kunezinto zokwakha ezivamile noma ngisho nendawo ezungezile. umoya.
Njengoba amazinga okushisa akhuphukayo kanye namagagasi okushisa aphazamisa ukuphila emhlabeni wonke, izixazululo zokupholisa ziya ngokuya zibaluleke kakhulu.Lokhu kuyinkinga ebalulekile, ikakhulukazi emazweni asathuthuka, lapho ukushisa kwehlobo kungase kudlulele futhi kulindeleke ukuba kushube.Kodwa izindlela zokupholisa ezivamile, njengomoya. conditioning, kuyabiza, sebenzisa amandla amaningi, kudinga ukufinyelela ugesi okulungile, futhi ngokuvamile kudinga ozone-depleting noma greenhouse-warming coolant.
Enye indlela yalezi zindlela zokupholisa ezidinga amandla kakhulu i-PDRC, isenzakalo lapho ubuso buzipholisa ngokuzenzakalelayo ngokubonisa ukukhanya kwelanga kanye nokushisa okukhiphela emkhathini opholile. Uma indawo engaphezulu inokukhanya kwelanga (R) inganciphisa ukwanda kokushisa kwelanga, futhi ngezinga eliphezulu lemisebe eshisayo (Ɛ) ingakhuphula isibhakabhaka sokulahlekelwa ukushisa okukhazimulayo, i-PDRC isebenza kahle kakhulu.Uma u-R no-Ɛ kuphezulu ngokwanele, noma ngabe ukulahlekelwa ukushisa kwenetha kuzokwenzeka elangeni.
Ukwakha imiklamo esebenzayo ye-PDC kuyinselele: izixazululo eziningi zedizayini zakamuva ziyinkimbinkimbi noma ziyabiza, futhi azikwazi ukusetshenziswa kabanzi noma zifakwe ophahleni nezakhiwo ezinemimo nokuthungwa okuhlukene.Kuze kube manje, upende omhlophe oshibhile futhi kulula ukuwusebenzisa bekuyisibonakaliso se-PCC. Kodwa-ke, izimbobo ezimhlophe ngokuvamile zinezingulube ezimunca ukukhanya kwe-ultraviolet futhi azibonisi kahle ubude bamaza okukhanya kwelanga, ngakho ukusebenza kwazo kulinganiselwe kuphela.
Abacwaningi base-Columbia Engineering basungule i-polymer yangaphandle ye-PDC yangaphandle esebenza kahle kakhulu enezikhala zomoya ze-nanometer-kuya ku-micron-scale engasetshenziswa njengesipholisa umoya esizenzekelayo futhi engadaywa futhi ipendwe ophahleni, izakhiwo, amathangi amanzi, izimoto, ngisho nemikhumbi-mkhathi. - noma yini engapendiwa.Basebenzise indlela yokuguqula yesigaba esisekelwe kwisixazululo ukuze banikeze i-polymer isakhiwo esifana negwebu elinezimbobo.Ngenxa yomehluko kunkomba ye-refractive phakathi kwama-air voids kanye ne-polymer ezungezile, ukuvuleka komoya ku-polymer enezimbobo. isabalalisa futhi ibonise ukukhanya kwelanga.I-polymer iba mhlophe futhi kanjalo igwema ukushisisa kwelanga, kuyilapho ukukhishwa kwayo okungokwemvelo kuyivumela ukuthi ikhiphe ukushisa ngendlela ephumelelayo esibhakabhakeni.
Isikhathi sokuthumela: Mar-18-2021